From 8c9d6bc6eff413476fa75bf5b6d995a72b028fff Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sun, 11 Oct 2026 22:10:58 +0200
Subject: [PATCH 01/23] Started working on events/activities based on Florians
 work

---
 src/fiber_package/events/activity.py      | 25 ++++++++++++
 src/fiber_package/events/communication.py | 46 +++++++++++++++++++++++
 src/fiber_package/events/enums.py         | 10 +++++
 3 files changed, 81 insertions(+)
 create mode 100644 src/fiber_package/events/activity.py
 create mode 100644 src/fiber_package/events/communication.py
 create mode 100644 src/fiber_package/events/enums.py

diff --git a/src/fiber_package/events/activity.py b/src/fiber_package/events/activity.py
new file mode 100644
index 0000000..bf63afa
--- /dev/null
+++ b/src/fiber_package/events/activity.py
@@ -0,0 +1,25 @@
+from typing import Annotated, Self
+
+from .communication import CommunicationModel
+
+class ActivityModel(CommunicationModel):
+    category: Annotated[
+        CommunicationCategory,
+        Field(pattern=CommunicationCategory.activity)
+    ]
+
+    start_time: datetime
+    end_time: datetime
+
+
+    #signuplist: GroupRef | None = None
+    # TODO: implement signup list (huge modular system)
+
+    # TODO: see Felt 'activiteiten' DB schema. Things like:
+    # costs, payment method, email, target group, maximal attendees ....
+
+    @model_validator(mode='after')
+    def check_end_after_start(self) -> Self:
+        if self.end_time < self.start_time:
+            raise ValueError("End time cannot be earlier than start time")
+        return self
diff --git a/src/fiber_package/events/communication.py b/src/fiber_package/events/communication.py
new file mode 100644
index 0000000..257b632
--- /dev/null
+++ b/src/fiber_package/events/communication.py
@@ -0,0 +1,46 @@
+from pydantic import BaseModel, model_validator, Field, HttpUrl
+from enum import StrEnum
+from datetime import datetime
+
+from fiber_package.base import FiberBaseModel
+
+from .enums import CommunicationCategory
+
+'''
+A "communication" is a piece of communication/promotion to be shared with
+members, which may appear on the website and in the weekly mailing.
+'''
+class CommunicationModel(FiberBaseModel):
+    category: CommunicationCategory
+
+    name_en: str
+    name_nl: str
+
+    association_tags = []
+    # list of associations this communication belongs to
+
+    subtitle_en: str
+    subtitle_nl: str
+    # subtitles currently (2026) appear only in the table of contents in the
+    # weekly mailing; they are meant to be a short catchy flavour text
+
+    description_en: str
+    description_nl: str
+
+    image: HttpUrl | None = None
+    # often, a poster comes associated with a communication (in particular if
+    # it's an activity). In that case, the poster is uploaded to the cloud and
+    # the share link is attached to the communication
+    # TODO: potentially rethink the way images are attached to communications
+
+    visibility: bool
+    # should this communication be shown to members at all? Useful for
+    # temporarily hiding a communication
+    
+    only_members: bool
+    # is this communication only visible to members? This refers to visibility
+    # on the website, i.e. is this only visible to visitors who are logged in?
+    
+    archived: bool
+    # an archived communication cannot be edited, only viewed for future
+    # reference
\ No newline at end of file
diff --git a/src/fiber_package/events/enums.py b/src/fiber_package/events/enums.py
new file mode 100644
index 0000000..84682d2
--- /dev/null
+++ b/src/fiber_package/events/enums.py
@@ -0,0 +1,10 @@
+from enum import StrEnum
+
+'''
+The category is only used to place the communication correctly in the weekly
+mailing and the board-website, it is not visible (or relevant) to readers
+'''
+class CommunicationCategory(StrEnum):
+    announcement = "announcement"
+    news = "news"
+    activity = "activity"

From 337d27425eedbab6b6821ec812dfabb6a4514d54 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Mon, 12 Oct 2026 17:08:05 +0200
Subject: [PATCH 02/23] added payment info to activities

---
 src/fiber_package/events/activity.py  |  6 +++++-
 src/fiber_package/events/submodels.py | 10 ++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 src/fiber_package/events/submodels.py

diff --git a/src/fiber_package/events/activity.py b/src/fiber_package/events/activity.py
index bf63afa..0ee85dc 100644
--- a/src/fiber_package/events/activity.py
+++ b/src/fiber_package/events/activity.py
@@ -1,6 +1,8 @@
 from typing import Annotated, Self
 
 from .communication import CommunicationModel
+from .submodels import ActivityPaymentInfo
+
 
 class ActivityModel(CommunicationModel):
     category: Annotated[
@@ -11,12 +13,14 @@ class ActivityModel(CommunicationModel):
     start_time: datetime
     end_time: datetime
 
+    payment_info: ActivityPaymentInfo | None = None
+
 
     #signuplist: GroupRef | None = None
     # TODO: implement signup list (huge modular system)
 
     # TODO: see Felt 'activiteiten' DB schema. Things like:
-    # costs, payment method, email, target group, maximal attendees ....
+    # email, target group, maximal attendees ....
 
     @model_validator(mode='after')
     def check_end_after_start(self) -> Self:
diff --git a/src/fiber_package/events/submodels.py b/src/fiber_package/events/submodels.py
new file mode 100644
index 0000000..e933c02
--- /dev/null
+++ b/src/fiber_package/events/submodels.py
@@ -0,0 +1,10 @@
+from decimal import Decimal
+from typing import Annotated
+
+from pydantic import BaseModel, Field
+
+class ActivityPaymentInfo(BaseModel):
+    contribution: Annotated[Decimal, Field(decimal_places=2, ge=0)]
+    nnv_contribution: Annotated[Decimal | None, Field(None, decimal_places=2, ge=0)] = None
+
+    

From 4c62bc4de8aa18dab34c8f525d774f67a40f8746 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Tue, 13 Oct 2026 13:37:57 +0200
Subject: [PATCH 03/23] started working on activity system

---
 src/fiber_package/events/activity.py |  3 ++
 src/fiber_package/events/notes.txt   | 48 ++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 src/fiber_package/events/notes.txt

diff --git a/src/fiber_package/events/activity.py b/src/fiber_package/events/activity.py
index 0ee85dc..969e745 100644
--- a/src/fiber_package/events/activity.py
+++ b/src/fiber_package/events/activity.py
@@ -10,6 +10,9 @@ class ActivityModel(CommunicationModel):
         Field(pattern=CommunicationCategory.activity)
     ]
 
+    slug: str
+    # unique short name used in the public URL
+
     start_time: datetime
     end_time: datetime
 
diff --git a/src/fiber_package/events/notes.txt b/src/fiber_package/events/notes.txt
new file mode 100644
index 0000000..f19315c
--- /dev/null
+++ b/src/fiber_package/events/notes.txt
@@ -0,0 +1,48 @@
+Okay some ideas:
+
+We want a modular system.
+A signup form = list of signup questions
+A signup = list of signup answers
+
+
+Examples of questions:
+* Dietary restrictions
+* Insurance info
+* Pick option from list
+* Team (interesting one, as people can also make new teams)
+
+
+class SignupQuestion
+--> SignupQuestionDiet, SignupQuestionInsurance, SignupQuestionOption ....
+Questions differentiate through enum question_type
+Questions can have parameters like Option
+
+--------------
+
+Every SignupQuestionXYZ has a SignupAnswerXYZ
+
+
+An activity consists of:
+* usual event stuff, email, max_attendees, ....
+* a slug!
+* dict of SignupQuestions
+* list of QuestionOrder
+
+A signup then consists of:
+* ActivityRef (what activity)
+* EntityRef (who signed up)
+* optional payment_id
+* optional is_reserve
+* optional confirmed (true if paid)
+* dict of SignupAnswers
+
+--------------
+
+When saving a signup, we check:
+* get activity
+* is person allowed to sign up?
+* do we have enough signup answers
+* for every answer: does answer validate type of question?
+
+
+

From 9729b894772d54e53456670d257cccff95c603ca Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Tue, 13 Oct 2026 16:57:27 +0200
Subject: [PATCH 04/23] rename to singular

---
 src/fiber_package/{events => event}/activity.py      | 0
 src/fiber_package/{events => event}/communication.py | 0
 src/fiber_package/{events => event}/enums.py         | 0
 src/fiber_package/{events => event}/notes.txt        | 0
 src/fiber_package/{events => event}/submodels.py     | 0
 5 files changed, 0 insertions(+), 0 deletions(-)
 rename src/fiber_package/{events => event}/activity.py (100%)
 rename src/fiber_package/{events => event}/communication.py (100%)
 rename src/fiber_package/{events => event}/enums.py (100%)
 rename src/fiber_package/{events => event}/notes.txt (100%)
 rename src/fiber_package/{events => event}/submodels.py (100%)

diff --git a/src/fiber_package/events/activity.py b/src/fiber_package/event/activity.py
similarity index 100%
rename from src/fiber_package/events/activity.py
rename to src/fiber_package/event/activity.py
diff --git a/src/fiber_package/events/communication.py b/src/fiber_package/event/communication.py
similarity index 100%
rename from src/fiber_package/events/communication.py
rename to src/fiber_package/event/communication.py
diff --git a/src/fiber_package/events/enums.py b/src/fiber_package/event/enums.py
similarity index 100%
rename from src/fiber_package/events/enums.py
rename to src/fiber_package/event/enums.py
diff --git a/src/fiber_package/events/notes.txt b/src/fiber_package/event/notes.txt
similarity index 100%
rename from src/fiber_package/events/notes.txt
rename to src/fiber_package/event/notes.txt
diff --git a/src/fiber_package/events/submodels.py b/src/fiber_package/event/submodels.py
similarity index 100%
rename from src/fiber_package/events/submodels.py
rename to src/fiber_package/event/submodels.py

From d855b862cac160773284d806fb7a6670e2d73983 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Tue, 13 Oct 2026 21:40:37 +0200
Subject: [PATCH 05/23] Basic signup form & answer system

---
 .../{event => communication}/activity.py      | 18 +++--
 .../{event => communication}/communication.py | 12 ++--
 .../{event => communication}/enums.py         |  0
 .../{event => communication}/notes.txt        |  0
 src/fiber_package/communication/submodels.py  | 14 ++++
 src/fiber_package/entity/person.py            |  4 +-
 src/fiber_package/event/submodels.py          | 10 ---
 src/fiber_package/refs.py                     | 13 +++-
 .../signup/answer/answer_base.py              |  8 +++
 .../signup/answer/answer_open_questions.py    |  9 +++
 .../signup/elements/form_base_question.py     |  4 ++
 .../signup/elements/form_element.py           |  8 +++
 .../signup/elements/form_open_questions.py    | 27 +++++++
 .../signup/elements/form_text.py              |  9 +++
 .../signup/elements/form_title.py             |  9 +++
 src/fiber_package/signup/enums.py             | 14 ++++
 src/fiber_package/signup/notes.txt            | 70 +++++++++++++++++++
 src/fiber_package/signup/signup.py            | 16 +++++
 18 files changed, 218 insertions(+), 27 deletions(-)
 rename src/fiber_package/{event => communication}/activity.py (61%)
 rename src/fiber_package/{event => communication}/communication.py (89%)
 rename src/fiber_package/{event => communication}/enums.py (100%)
 rename src/fiber_package/{event => communication}/notes.txt (100%)
 create mode 100644 src/fiber_package/communication/submodels.py
 delete mode 100644 src/fiber_package/event/submodels.py
 create mode 100644 src/fiber_package/signup/answer/answer_base.py
 create mode 100644 src/fiber_package/signup/answer/answer_open_questions.py
 create mode 100644 src/fiber_package/signup/elements/form_base_question.py
 create mode 100644 src/fiber_package/signup/elements/form_element.py
 create mode 100644 src/fiber_package/signup/elements/form_open_questions.py
 create mode 100644 src/fiber_package/signup/elements/form_text.py
 create mode 100644 src/fiber_package/signup/elements/form_title.py
 create mode 100644 src/fiber_package/signup/enums.py
 create mode 100644 src/fiber_package/signup/notes.txt
 create mode 100644 src/fiber_package/signup/signup.py

diff --git a/src/fiber_package/event/activity.py b/src/fiber_package/communication/activity.py
similarity index 61%
rename from src/fiber_package/event/activity.py
rename to src/fiber_package/communication/activity.py
index 969e745..e6f0786 100644
--- a/src/fiber_package/event/activity.py
+++ b/src/fiber_package/communication/activity.py
@@ -1,14 +1,18 @@
-from typing import Annotated, Self
+from typing import Literal, Self
+from pydantic import model_validator
+
+from datetime import datetime
 
 from .communication import CommunicationModel
 from .submodels import ActivityPaymentInfo
+from .enums import CommunicationCategory
 
+from fiber_package.refs import SignupRefList
+
+from fiber_package.signup.elements.form_element import FormElement
 
 class ActivityModel(CommunicationModel):
-    category: Annotated[
-        CommunicationCategory,
-        Field(pattern=CommunicationCategory.activity)
-    ]
+    category: Literal[CommunicationCategory.activity]
 
     slug: str
     # unique short name used in the public URL
@@ -18,9 +22,9 @@ class ActivityModel(CommunicationModel):
 
     payment_info: ActivityPaymentInfo | None = None
 
+    form: list[FormElement]
 
-    #signuplist: GroupRef | None = None
-    # TODO: implement signup list (huge modular system)
+    signups: SignupRefList = SignupRefList([], "signup")
 
     # TODO: see Felt 'activiteiten' DB schema. Things like:
     # email, target group, maximal attendees ....
diff --git a/src/fiber_package/event/communication.py b/src/fiber_package/communication/communication.py
similarity index 89%
rename from src/fiber_package/event/communication.py
rename to src/fiber_package/communication/communication.py
index 257b632..d5b17ee 100644
--- a/src/fiber_package/event/communication.py
+++ b/src/fiber_package/communication/communication.py
@@ -1,6 +1,4 @@
-from pydantic import BaseModel, model_validator, Field, HttpUrl
-from enum import StrEnum
-from datetime import datetime
+from pydantic import Field, HttpUrl
 
 from fiber_package.base import FiberBaseModel
 
@@ -16,7 +14,7 @@ class CommunicationModel(FiberBaseModel):
     name_en: str
     name_nl: str
 
-    association_tags = []
+    association_tags: list[str] = Field(default_factory=list)
     # list of associations this communication belongs to
 
     subtitle_en: str
@@ -36,11 +34,11 @@ class CommunicationModel(FiberBaseModel):
     visibility: bool
     # should this communication be shown to members at all? Useful for
     # temporarily hiding a communication
-    
+
     only_members: bool
     # is this communication only visible to members? This refers to visibility
     # on the website, i.e. is this only visible to visitors who are logged in?
-    
+
     archived: bool
     # an archived communication cannot be edited, only viewed for future
-    # reference
\ No newline at end of file
+    # reference
diff --git a/src/fiber_package/event/enums.py b/src/fiber_package/communication/enums.py
similarity index 100%
rename from src/fiber_package/event/enums.py
rename to src/fiber_package/communication/enums.py
diff --git a/src/fiber_package/event/notes.txt b/src/fiber_package/communication/notes.txt
similarity index 100%
rename from src/fiber_package/event/notes.txt
rename to src/fiber_package/communication/notes.txt
diff --git a/src/fiber_package/communication/submodels.py b/src/fiber_package/communication/submodels.py
new file mode 100644
index 0000000..ffc6f30
--- /dev/null
+++ b/src/fiber_package/communication/submodels.py
@@ -0,0 +1,14 @@
+from decimal import Decimal
+from typing import Annotated
+
+from pydantic import BaseModel, Field
+
+class ActivityPaymentInfo(BaseModel):
+    contribution: Annotated[
+        Decimal, Field(decimal_places=2, ge=0)
+    ]
+    nnv_contribution: Annotated[
+        Decimal | None, Field(None, decimal_places=2, ge=0)
+    ] = None
+
+
diff --git a/src/fiber_package/entity/person.py b/src/fiber_package/entity/person.py
index 4d05c34..eeabbeb 100644
--- a/src/fiber_package/entity/person.py
+++ b/src/fiber_package/entity/person.py
@@ -1,4 +1,4 @@
-from pydantic import model_validator, EmailStr, computed_field, field_serializer
+from pydantic import model_validator, EmailStr, field_serializer
 from typing import Self, Literal
 from datetime import date
 
@@ -31,7 +31,7 @@ class PersonModel(FiberBaseModel):
         if self.date_of_birth is None:
             return False
         if ref_date is None:
-            ref_data = date.today()
+            ref_date = date.today()
         age = ( ref_date.year - self.date_of_birth.year
                 - ( (ref_date.month, ref_date.day)
                     < (self.date_of_birth.month, self.date_of_birth.day) )
diff --git a/src/fiber_package/event/submodels.py b/src/fiber_package/event/submodels.py
deleted file mode 100644
index e933c02..0000000
--- a/src/fiber_package/event/submodels.py
+++ /dev/null
@@ -1,10 +0,0 @@
-from decimal import Decimal
-from typing import Annotated
-
-from pydantic import BaseModel, Field
-
-class ActivityPaymentInfo(BaseModel):
-    contribution: Annotated[Decimal, Field(decimal_places=2, ge=0)]
-    nnv_contribution: Annotated[Decimal | None, Field(None, decimal_places=2, ge=0)] = None
-
-    
diff --git a/src/fiber_package/refs.py b/src/fiber_package/refs.py
index 6032df2..70879b1 100644
--- a/src/fiber_package/refs.py
+++ b/src/fiber_package/refs.py
@@ -11,7 +11,8 @@ CollectionName = Literal[
     "entity",
     "committee",
     "committee_edition",
-    "guild"
+    "guild",
+    "signup"
 ]
 
 C = TypeVar("C", bound=str)
@@ -47,3 +48,13 @@ CommitteeEditionRefList = RefList[Literal["committee_edition"]]
 
 GuildRef = Ref[Literal["guild"]]
 GuildRefList = RefList[Literal["guild"]]
+
+SignupRef = Ref[Literal["signup"]]
+SignupRefList = RefList[Literal["signup"]]
+
+CommunicationRef = Ref[Literal["communication"]]
+CommunicationRefList = Ref[Literal["communication"]]
+
+# Activities are stored in the collection of communications
+ActivityRef = CommunicationRef
+ActivityRefList = CommunicationRefList
diff --git a/src/fiber_package/signup/answer/answer_base.py b/src/fiber_package/signup/answer/answer_base.py
new file mode 100644
index 0000000..533793a
--- /dev/null
+++ b/src/fiber_package/signup/answer/answer_base.py
@@ -0,0 +1,8 @@
+from pydantic import BaseModel, ConfigDict
+from fiber_package.signup.enums import FormQuestionCategory
+
+class AnswerBase(BaseModel):
+    model_config = ConfigDict(extra='allow')
+
+    category: FormQuestionCategory
+    question_name: str
diff --git a/src/fiber_package/signup/answer/answer_open_questions.py b/src/fiber_package/signup/answer/answer_open_questions.py
new file mode 100644
index 0000000..a42b09f
--- /dev/null
+++ b/src/fiber_package/signup/answer/answer_open_questions.py
@@ -0,0 +1,9 @@
+from typing import Literal
+
+from .answer_base import AnswerBase
+from fiber_package.signup.enums import FormElementCategory
+
+class AnswerOpenQuestions(AnswerBase):
+    category: Literal[FormElementCategory.open_questions]
+
+    answers: list[str]
diff --git a/src/fiber_package/signup/elements/form_base_question.py b/src/fiber_package/signup/elements/form_base_question.py
new file mode 100644
index 0000000..483d10b
--- /dev/null
+++ b/src/fiber_package/signup/elements/form_base_question.py
@@ -0,0 +1,4 @@
+from .form_element import FormElement
+
+class FormBaseQuestion(FormElement):
+    required: bool
diff --git a/src/fiber_package/signup/elements/form_element.py b/src/fiber_package/signup/elements/form_element.py
new file mode 100644
index 0000000..b68be56
--- /dev/null
+++ b/src/fiber_package/signup/elements/form_element.py
@@ -0,0 +1,8 @@
+from pydantic import BaseModel, ConfigDict
+from fiber_package.signup.enums import FormElementCategory
+
+class FormElement(BaseModel):
+    model_config = ConfigDict(extra='allow')
+
+    category: FormElementCategory
+    name: str
diff --git a/src/fiber_package/signup/elements/form_open_questions.py b/src/fiber_package/signup/elements/form_open_questions.py
new file mode 100644
index 0000000..9f4d774
--- /dev/null
+++ b/src/fiber_package/signup/elements/form_open_questions.py
@@ -0,0 +1,27 @@
+from typing import Literal
+from pydantic import BaseModel
+
+from .form_base_question import FormBaseQuestion
+from fiber_package.signup.enums import FormElementCategory
+
+class OpenQuestion(BaseModel):
+    question_en: str
+    question_nl: str
+
+    explanation_en: str
+    explanation_nl: str
+
+    placeholder_en: str = ""
+    placeholder_nl: str = ""
+
+class FormOpenQuestions(FormBaseQuestion):
+    category: Literal[FormElementCategory.open_questions]
+
+    questions: list[OpenQuestion]
+
+    title: str | None = None
+    pretext: str | None = None
+    posttext: str | None = None
+
+
+
diff --git a/src/fiber_package/signup/elements/form_text.py b/src/fiber_package/signup/elements/form_text.py
new file mode 100644
index 0000000..991e42b
--- /dev/null
+++ b/src/fiber_package/signup/elements/form_text.py
@@ -0,0 +1,9 @@
+from typing import Literal
+
+from .form_element import FormElement
+from fiber_package.signup.enums import FormElementCategory
+
+class FormText(FormElement):
+    category: Literal[FormElementCategory.text_piece]
+
+    text: str
diff --git a/src/fiber_package/signup/elements/form_title.py b/src/fiber_package/signup/elements/form_title.py
new file mode 100644
index 0000000..991d532
--- /dev/null
+++ b/src/fiber_package/signup/elements/form_title.py
@@ -0,0 +1,9 @@
+from typing import Literal
+
+from .form_element import FormElement
+from fiber_package.signup.enums import FormElementCategory
+
+class FormText(FormElement):
+    category: Literal[FormElementCategory.title_text]
+
+    title: str
diff --git a/src/fiber_package/signup/enums.py b/src/fiber_package/signup/enums.py
new file mode 100644
index 0000000..5455ec8
--- /dev/null
+++ b/src/fiber_package/signup/enums.py
@@ -0,0 +1,14 @@
+from enum import StrEnum
+from typing import Literal
+
+'''
+This category is used to differentiate types of form elements
+'''
+class FormElementCategory(StrEnum):
+    text_piece = "text_piece"
+    title_text = "title_text"
+    open_questions = "open_questions"
+
+FormQuestionCategory = Literal[
+    FormElementCategory.open_questions
+]
diff --git a/src/fiber_package/signup/notes.txt b/src/fiber_package/signup/notes.txt
new file mode 100644
index 0000000..d9a6f03
--- /dev/null
+++ b/src/fiber_package/signup/notes.txt
@@ -0,0 +1,70 @@
+Felt has sjablonen, stored in config
+
+sjablonen.(name) has fields:
+* naam_nl = default name
+* naam_en = ...
+* info = used in the sjabloon overview
+* types (array_keys ???)
+* parameters = dict of parameters & type
+* parametes_beschrijving = description of parameters
+* parameters_sample = default values of all parameters
+
+On /activiteiten/bewerk we have a list of if statements
+It groups the answers by type
+* choises, feedback, teams, dinner, shirtsizes, nnv, 
+* public transport, reserve list, signups list
+
+* activites store their "types" as bitmask (1 = medisch, 2 = thuisfront ...)
+* stored in models\Parameter  
+* list of parameter datatypes, 
+
+Why is everything so builtin ?! Crazy. 
+
+List of question types:
+* medical --> alergies, meds, extra info
+* thuisfront --> name contact, email contact, phone #1, phone #2
+* shirtsize --> pick enum from XXS, XS, S, M, L, XL, XXL
+* identification --> document type, document number, expiry date, ...
+* nnv --> state (notmember, later, member) & nnv number
+* food --> joins for the meal (true/false), diet (text), vegetarian (t/f)
+* public transport --> enum (no, week-only, weekend-only)
+* travel / zorgverzekering --> verzekeraar, polisnummer, noodnummer, type (zorg of reis)
+* questions --> parameter_id, slot, answer
+* choices --> parameter_id, slot, choice
+* feedback --> feedabck (str)
+* team --> teamname (str)
+
+Maybe a bug?
+If nnvbijdrage is set but nnv is not part of activity,
+then everybody pays the LOW price as if NNV pays ??!!
+Not a bug! You cannot set NNV if NNV is not part of sjabloon!
+... its handled by custom js.... 
+
+
+omg it is TERRIBLE. In Silk every sjabloon has its OWN template ?!
+so much work yikes
+
+Example for the "Studiereis" sjabloon:
+* Some text (incl deadline) --> we can refer to variables and use HTML!
+* Header (your signup is coupled to your current account!)
+* Health insurance (+ text)
+* Medical information (+ text)
+* Home stayers (+text & checkmark about International Office)
+* Identification (+text)
+* NNV (+text)
+* T-shirt 
+* OV
+* Feedback
+
+Pattern:
+* (title) (prefix text) item (suffix text)
+Then possibly also:
+* title-items & text-items
+
+-------------
+
+Ideas:
+* Modular system!
+* Create template activities (by creating activity, store as template & then delete?)
+
+* Combine complicated questions into custom question (see all above)
diff --git a/src/fiber_package/signup/signup.py b/src/fiber_package/signup/signup.py
new file mode 100644
index 0000000..c8e07ba
--- /dev/null
+++ b/src/fiber_package/signup/signup.py
@@ -0,0 +1,16 @@
+from typing import Literal
+
+from fiber_package.base import FiberBaseModel
+from fiber_package.refs import EntityRef, ActivityRef
+
+from fiber_package.signup.answer.answer_base import AnswerBase
+
+class Signup(FiberBaseModel):
+    collection_name: Literal["signup"] = "signup"
+
+    attendee: EntityRef
+    activity: ActivityRef
+
+    answers: list[AnswerBase]
+
+    # TODO: signed_up, is_reserve, payment, confirmed, ....

From 0fd92120d95ba40d7c82c321d8d13a774eaba1ed Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Tue, 13 Oct 2026 21:47:39 +0200
Subject: [PATCH 06/23] rename + added validation of answer to question

---
 .../signup/answer/answer_open_questions.py          |  2 +-
 .../{elements => element}/form_base_question.py     |  4 ++++
 .../signup/{elements => element}/form_element.py    |  0
 .../{elements => element}/form_open_questions.py    | 13 ++++++++++---
 .../signup/{elements => element}/form_text.py       |  0
 .../signup/{elements => element}/form_title.py      |  0
 6 files changed, 15 insertions(+), 4 deletions(-)
 rename src/fiber_package/signup/{elements => element}/form_base_question.py (50%)
 rename src/fiber_package/signup/{elements => element}/form_element.py (100%)
 rename src/fiber_package/signup/{elements => element}/form_open_questions.py (52%)
 rename src/fiber_package/signup/{elements => element}/form_text.py (100%)
 rename src/fiber_package/signup/{elements => element}/form_title.py (100%)

diff --git a/src/fiber_package/signup/answer/answer_open_questions.py b/src/fiber_package/signup/answer/answer_open_questions.py
index a42b09f..b399dbb 100644
--- a/src/fiber_package/signup/answer/answer_open_questions.py
+++ b/src/fiber_package/signup/answer/answer_open_questions.py
@@ -6,4 +6,4 @@ from fiber_package.signup.enums import FormElementCategory
 class AnswerOpenQuestions(AnswerBase):
     category: Literal[FormElementCategory.open_questions]
 
-    answers: list[str]
+    answer_list: list[str]
diff --git a/src/fiber_package/signup/elements/form_base_question.py b/src/fiber_package/signup/element/form_base_question.py
similarity index 50%
rename from src/fiber_package/signup/elements/form_base_question.py
rename to src/fiber_package/signup/element/form_base_question.py
index 483d10b..11365f0 100644
--- a/src/fiber_package/signup/elements/form_base_question.py
+++ b/src/fiber_package/signup/element/form_base_question.py
@@ -2,3 +2,7 @@ from .form_element import FormElement
 
 class FormBaseQuestion(FormElement):
     required: bool
+
+    title: str | None = None
+    pretext: str | None = None
+    posttext: str | None = None
diff --git a/src/fiber_package/signup/elements/form_element.py b/src/fiber_package/signup/element/form_element.py
similarity index 100%
rename from src/fiber_package/signup/elements/form_element.py
rename to src/fiber_package/signup/element/form_element.py
diff --git a/src/fiber_package/signup/elements/form_open_questions.py b/src/fiber_package/signup/element/form_open_questions.py
similarity index 52%
rename from src/fiber_package/signup/elements/form_open_questions.py
rename to src/fiber_package/signup/element/form_open_questions.py
index 9f4d774..8ad5de2 100644
--- a/src/fiber_package/signup/elements/form_open_questions.py
+++ b/src/fiber_package/signup/element/form_open_questions.py
@@ -4,6 +4,8 @@ from pydantic import BaseModel
 from .form_base_question import FormBaseQuestion
 from fiber_package.signup.enums import FormElementCategory
 
+from fiber_package.signup.answer.answer_open_questions import AnswerOpenQuestions
+
 class OpenQuestion(BaseModel):
     question_en: str
     question_nl: str
@@ -19,9 +21,14 @@ class FormOpenQuestions(FormBaseQuestion):
 
     questions: list[OpenQuestion]
 
-    title: str | None = None
-    pretext: str | None = None
-    posttext: str | None = None
+    def validate_answer(self, answer: AnswerOpenQuestions) -> None:
+        if answer.question_name != self.name:
+            raise ValueError("Answer question name does not match.")
+        
+        answer_list = answer.answer_list
+        if len(answer_list) != len(self.questions):
+            raise ValueError("Length of answer question list does not match.")
+
 
 
 
diff --git a/src/fiber_package/signup/elements/form_text.py b/src/fiber_package/signup/element/form_text.py
similarity index 100%
rename from src/fiber_package/signup/elements/form_text.py
rename to src/fiber_package/signup/element/form_text.py
diff --git a/src/fiber_package/signup/elements/form_title.py b/src/fiber_package/signup/element/form_title.py
similarity index 100%
rename from src/fiber_package/signup/elements/form_title.py
rename to src/fiber_package/signup/element/form_title.py

From 0252f2aeb6f6788ad175201155669a191b9dd8dc Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Tue, 13 Oct 2026 21:58:34 +0200
Subject: [PATCH 07/23] fixed typo

---
 src/fiber_package/signup/element/form_title.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fiber_package/signup/element/form_title.py b/src/fiber_package/signup/element/form_title.py
index 991d532..d300c64 100644
--- a/src/fiber_package/signup/element/form_title.py
+++ b/src/fiber_package/signup/element/form_title.py
@@ -3,7 +3,7 @@ from typing import Literal
 from .form_element import FormElement
 from fiber_package.signup.enums import FormElementCategory
 
-class FormText(FormElement):
+class FormTitle(FormElement):
     category: Literal[FormElementCategory.title_text]
 
     title: str

From 6d8b06dfc7583c2a462ec559582fb2276e606f42 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Wed, 14 Oct 2026 09:26:00 +0200
Subject: [PATCH 08/23] consistent naming

---
 src/fiber_package/signup/signup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fiber_package/signup/signup.py b/src/fiber_package/signup/signup.py
index c8e07ba..6b13f63 100644
--- a/src/fiber_package/signup/signup.py
+++ b/src/fiber_package/signup/signup.py
@@ -5,7 +5,7 @@ from fiber_package.refs import EntityRef, ActivityRef
 
 from fiber_package.signup.answer.answer_base import AnswerBase
 
-class Signup(FiberBaseModel):
+class SignupModel(FiberBaseModel):
     collection_name: Literal["signup"] = "signup"
 
     attendee: EntityRef

From f8c576263ccc4089723b78406f394062a5238bde Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Wed, 14 Oct 2026 10:04:28 +0200
Subject: [PATCH 09/23] system for validating answers to signup forms

---
 src/fiber_package/communication/activity.py   | 51 +++++++++++++++++--
 .../signup/element/form_base_question.py      |  3 ++
 .../signup/element/form_base_text.py          |  5 ++
 .../signup/element/form_open_questions.py     |  2 +-
 src/fiber_package/signup/enums.py             |  5 ++
 src/fiber_package/signup/util.py              | 18 +++++++
 6 files changed, 79 insertions(+), 5 deletions(-)
 create mode 100644 src/fiber_package/signup/element/form_base_text.py
 create mode 100644 src/fiber_package/signup/util.py

diff --git a/src/fiber_package/communication/activity.py b/src/fiber_package/communication/activity.py
index e6f0786..9e9af96 100644
--- a/src/fiber_package/communication/activity.py
+++ b/src/fiber_package/communication/activity.py
@@ -1,5 +1,5 @@
-from typing import Literal, Self
-from pydantic import model_validator
+from typing import Literal, Self, Annotated
+from pydantic import model_validator, Field
 
 from datetime import datetime
 
@@ -8,8 +8,17 @@ from .submodels import ActivityPaymentInfo
 from .enums import CommunicationCategory
 
 from fiber_package.refs import SignupRefList
+from fiber_package.signup.signup import SignupModel
+from fiber_package.signup.util import validate_answer
 
-from fiber_package.signup.elements.form_element import FormElement
+from fiber_package.signup.element.form_base_text import FormBaseText
+from fiber_package.signup.element.form_base_question import FormBaseQuestion
+
+# Special type which uses enum category to decide type!
+FieldUnionType = Annotated[
+    FormBaseText | FormBaseQuestion,
+    Field(discriminator="category")
+]
 
 class ActivityModel(CommunicationModel):
     category: Literal[CommunicationCategory.activity]
@@ -22,7 +31,7 @@ class ActivityModel(CommunicationModel):
 
     payment_info: ActivityPaymentInfo | None = None
 
-    form: list[FormElement]
+    form: list[FieldUnionType]
 
     signups: SignupRefList = SignupRefList([], "signup")
 
@@ -34,3 +43,37 @@ class ActivityModel(CommunicationModel):
         if self.end_time < self.start_time:
             raise ValueError("End time cannot be earlier than start time")
         return self
+
+    def validate_signup_form(self, signup: SignupModel) -> None:
+        required = set()
+        answerable = set()
+
+        question_dict: dict[str, FormBaseQuestion] = {}
+
+        for element in self.form:
+            if isinstance(element, FormBaseText):
+                continue
+            # so we know it is istance of FormBaseQuestion
+            answerable.add(element.name)
+            if element.required:
+                required.add(element.name)
+            question_dict[element.name] = element
+
+        answers = signup.answers
+        for answer in answers:
+            q_name = answer.question_name
+            if q_name not in answerable:
+                raise ValueError(
+                    f"Form contains answer to "
+                    f"non-existing question {q_name}."
+                )
+            answerable.remove(q_name)
+            if answer.question_name in required:
+                required.remove(q_name)
+
+            question = question_dict[q_name]
+            validate_answer(question, answer)
+
+
+        if len(required) > 0:
+            raise ValueError("Form does not answer all required questions.")
diff --git a/src/fiber_package/signup/element/form_base_question.py b/src/fiber_package/signup/element/form_base_question.py
index 11365f0..c0c1942 100644
--- a/src/fiber_package/signup/element/form_base_question.py
+++ b/src/fiber_package/signup/element/form_base_question.py
@@ -1,6 +1,9 @@
 from .form_element import FormElement
+from fiber_package.signup.enums import FormQuestionCategory
 
 class FormBaseQuestion(FormElement):
+    category: FormQuestionCategory
+
     required: bool
 
     title: str | None = None
diff --git a/src/fiber_package/signup/element/form_base_text.py b/src/fiber_package/signup/element/form_base_text.py
new file mode 100644
index 0000000..1cffa93
--- /dev/null
+++ b/src/fiber_package/signup/element/form_base_text.py
@@ -0,0 +1,5 @@
+from .form_element import FormElement
+from fiber_package.signup.enums import FormTextCategory
+
+class FormBaseText(FormElement):
+    category: FormTextCategory
diff --git a/src/fiber_package/signup/element/form_open_questions.py b/src/fiber_package/signup/element/form_open_questions.py
index 8ad5de2..c0429a8 100644
--- a/src/fiber_package/signup/element/form_open_questions.py
+++ b/src/fiber_package/signup/element/form_open_questions.py
@@ -24,7 +24,7 @@ class FormOpenQuestions(FormBaseQuestion):
     def validate_answer(self, answer: AnswerOpenQuestions) -> None:
         if answer.question_name != self.name:
             raise ValueError("Answer question name does not match.")
-        
+
         answer_list = answer.answer_list
         if len(answer_list) != len(self.questions):
             raise ValueError("Length of answer question list does not match.")
diff --git a/src/fiber_package/signup/enums.py b/src/fiber_package/signup/enums.py
index 5455ec8..6dff12b 100644
--- a/src/fiber_package/signup/enums.py
+++ b/src/fiber_package/signup/enums.py
@@ -12,3 +12,8 @@ class FormElementCategory(StrEnum):
 FormQuestionCategory = Literal[
     FormElementCategory.open_questions
 ]
+
+FormTextCategory = Literal[
+    FormElementCategory.text_piece,
+    FormElementCategory.title_text
+]
diff --git a/src/fiber_package/signup/util.py b/src/fiber_package/signup/util.py
new file mode 100644
index 0000000..91d037f
--- /dev/null
+++ b/src/fiber_package/signup/util.py
@@ -0,0 +1,18 @@
+from fiber_package.signup.element.form_base_question import FormBaseQuestion
+from fiber_package.signup.element.form_open_questions import FormOpenQuestions
+
+from fiber_package.signup.answer.answer_base import AnswerBase
+from fiber_package.signup.enums import FormElementCategory
+
+from fiber_package.signup.answer.answer_open_questions import AnswerOpenQuestions
+
+def validate_answer(question: FormBaseQuestion, answer: AnswerBase) -> None:
+    if question.category != answer.category:
+        raise ValueError("Question and answer category do not match!")
+
+    if question.category == FormElementCategory.open_questions:
+        question_val = FormOpenQuestions.model_validate(question.model_dump())
+        answer_val = AnswerOpenQuestions.model_validate(answer.model_dump())
+        question_val.validate_answer(answer_val)
+
+    # TODO: implement

From c0e592e97399d80f4dea7372e5d0e2f1c379a2b1 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Wed, 14 Oct 2026 16:54:27 +0200
Subject: [PATCH 10/23] added collection to list

---
 src/fiber_package/refs.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/fiber_package/refs.py b/src/fiber_package/refs.py
index 70879b1..b6ddd0a 100644
--- a/src/fiber_package/refs.py
+++ b/src/fiber_package/refs.py
@@ -12,7 +12,8 @@ CollectionName = Literal[
     "committee",
     "committee_edition",
     "guild",
-    "signup"
+    "signup",
+    "communication"
 ]
 
 C = TypeVar("C", bound=str)

From 0c1683c74bec7f8a3f2212eded54f595c6a9a61c Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Wed, 14 Oct 2026 20:25:13 +0200
Subject: [PATCH 11/23] Added function which ckecs if a form category is a
 question

---
 src/fiber_package/signup/enums.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/fiber_package/signup/enums.py b/src/fiber_package/signup/enums.py
index 6dff12b..d62f853 100644
--- a/src/fiber_package/signup/enums.py
+++ b/src/fiber_package/signup/enums.py
@@ -1,5 +1,5 @@
 from enum import StrEnum
-from typing import Literal
+from typing import Literal, get_args
 
 '''
 This category is used to differentiate types of form elements
@@ -17,3 +17,6 @@ FormTextCategory = Literal[
     FormElementCategory.text_piece,
     FormElementCategory.title_text
 ]
+
+def is_question_category(category: FormElementCategory) -> bool:
+    return category in get_args(FormQuestionCategory)

From 5e7f72ea2fbaad8cdbe7cea846f70959694ffd7e Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Wed, 14 Oct 2026 21:31:33 +0200
Subject: [PATCH 12/23] added new union types

---
 src/fiber_package/communication/activity.py | 15 +++++---------
 src/fiber_package/signup/answer/types.py    | 10 ++++++++++
 src/fiber_package/signup/element/types.py   | 22 +++++++++++++++++++++
 src/fiber_package/signup/signup.py          |  4 ++--
 4 files changed, 39 insertions(+), 12 deletions(-)
 create mode 100644 src/fiber_package/signup/answer/types.py
 create mode 100644 src/fiber_package/signup/element/types.py

diff --git a/src/fiber_package/communication/activity.py b/src/fiber_package/communication/activity.py
index 9e9af96..60fb0b8 100644
--- a/src/fiber_package/communication/activity.py
+++ b/src/fiber_package/communication/activity.py
@@ -1,5 +1,5 @@
-from typing import Literal, Self, Annotated
-from pydantic import model_validator, Field
+from typing import Literal, Self
+from pydantic import model_validator
 
 from datetime import datetime
 
@@ -11,14 +11,9 @@ from fiber_package.refs import SignupRefList
 from fiber_package.signup.signup import SignupModel
 from fiber_package.signup.util import validate_answer
 
-from fiber_package.signup.element.form_base_text import FormBaseText
 from fiber_package.signup.element.form_base_question import FormBaseQuestion
 
-# Special type which uses enum category to decide type!
-FieldUnionType = Annotated[
-    FormBaseText | FormBaseQuestion,
-    Field(discriminator="category")
-]
+from fiber_package.signup.element.types import FormElementUnion, FormTextUnion
 
 class ActivityModel(CommunicationModel):
     category: Literal[CommunicationCategory.activity]
@@ -31,7 +26,7 @@ class ActivityModel(CommunicationModel):
 
     payment_info: ActivityPaymentInfo | None = None
 
-    form: list[FieldUnionType]
+    form: list[FormElementUnion]
 
     signups: SignupRefList = SignupRefList([], "signup")
 
@@ -51,7 +46,7 @@ class ActivityModel(CommunicationModel):
         question_dict: dict[str, FormBaseQuestion] = {}
 
         for element in self.form:
-            if isinstance(element, FormBaseText):
+            if isinstance(element, FormTextUnion):
                 continue
             # so we know it is istance of FormBaseQuestion
             answerable.add(element.name)
diff --git a/src/fiber_package/signup/answer/types.py b/src/fiber_package/signup/answer/types.py
new file mode 100644
index 0000000..8f9effd
--- /dev/null
+++ b/src/fiber_package/signup/answer/types.py
@@ -0,0 +1,10 @@
+from typing import Annotated
+
+from pydantic import Field
+
+from .answer_open_questions import AnswerOpenQuestions
+
+AnswerUnion = Annotated[
+    AnswerOpenQuestions,
+    Field(discriminator="category")
+]
diff --git a/src/fiber_package/signup/element/types.py b/src/fiber_package/signup/element/types.py
new file mode 100644
index 0000000..77a6f4b
--- /dev/null
+++ b/src/fiber_package/signup/element/types.py
@@ -0,0 +1,22 @@
+from typing import Annotated
+
+from pydantic import Field
+
+from .form_open_questions import FormOpenQuestions
+from .form_text import FormText
+from .form_title import FormTitle
+
+FormTextUnion = Annotated[
+    FormText | FormTitle,
+    Field(discriminator="category")
+]
+
+FormQuestionUnion = Annotated[
+    FormOpenQuestions,
+    Field(discriminator="category")
+]
+
+FormElementUnion = Annotated[
+    FormTextUnion | FormQuestionUnion,
+    Field(discriminator="category")
+]
diff --git a/src/fiber_package/signup/signup.py b/src/fiber_package/signup/signup.py
index 6b13f63..8690685 100644
--- a/src/fiber_package/signup/signup.py
+++ b/src/fiber_package/signup/signup.py
@@ -3,7 +3,7 @@ from typing import Literal
 from fiber_package.base import FiberBaseModel
 from fiber_package.refs import EntityRef, ActivityRef
 
-from fiber_package.signup.answer.answer_base import AnswerBase
+from fiber_package.signup.answer.types import AnswerUnion
 
 class SignupModel(FiberBaseModel):
     collection_name: Literal["signup"] = "signup"
@@ -11,6 +11,6 @@ class SignupModel(FiberBaseModel):
     attendee: EntityRef
     activity: ActivityRef
 
-    answers: list[AnswerBase]
+    answers: list[AnswerUnion]
 
     # TODO: signed_up, is_reserve, payment, confirmed, ....

From 36dadd7ac132aeb24d5418a86bd64ec6bd5d39ab Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 16:35:19 +0200
Subject: [PATCH 13/23] rename

---
 src/fiber_package/{communication => events}/activity.py      | 0
 src/fiber_package/{communication => events}/communication.py | 0
 src/fiber_package/{communication => events}/enums.py         | 0
 src/fiber_package/{communication => events}/notes.txt        | 0
 src/fiber_package/{communication => events}/submodels.py     | 0
 5 files changed, 0 insertions(+), 0 deletions(-)
 rename src/fiber_package/{communication => events}/activity.py (100%)
 rename src/fiber_package/{communication => events}/communication.py (100%)
 rename src/fiber_package/{communication => events}/enums.py (100%)
 rename src/fiber_package/{communication => events}/notes.txt (100%)
 rename src/fiber_package/{communication => events}/submodels.py (100%)

diff --git a/src/fiber_package/communication/activity.py b/src/fiber_package/events/activity.py
similarity index 100%
rename from src/fiber_package/communication/activity.py
rename to src/fiber_package/events/activity.py
diff --git a/src/fiber_package/communication/communication.py b/src/fiber_package/events/communication.py
similarity index 100%
rename from src/fiber_package/communication/communication.py
rename to src/fiber_package/events/communication.py
diff --git a/src/fiber_package/communication/enums.py b/src/fiber_package/events/enums.py
similarity index 100%
rename from src/fiber_package/communication/enums.py
rename to src/fiber_package/events/enums.py
diff --git a/src/fiber_package/communication/notes.txt b/src/fiber_package/events/notes.txt
similarity index 100%
rename from src/fiber_package/communication/notes.txt
rename to src/fiber_package/events/notes.txt
diff --git a/src/fiber_package/communication/submodels.py b/src/fiber_package/events/submodels.py
similarity index 100%
rename from src/fiber_package/communication/submodels.py
rename to src/fiber_package/events/submodels.py

From 74a4c947a134189a5b00d0e1ef0f75e89ad3a1fe Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 16:50:38 +0200
Subject: [PATCH 14/23] new question type

---
 .../signup/answer/answer_checkmarks.py        |  9 ++++++
 .../signup/element/form_checkmarks.py         | 28 +++++++++++++++++++
 src/fiber_package/signup/element/types.py     |  3 +-
 src/fiber_package/signup/enums.py             |  4 ++-
 .../signup/howto-add-new-question.txt         |  8 ++++++
 src/fiber_package/signup/notes.txt            |  5 ----
 6 files changed, 50 insertions(+), 7 deletions(-)
 create mode 100644 src/fiber_package/signup/answer/answer_checkmarks.py
 create mode 100644 src/fiber_package/signup/element/form_checkmarks.py
 create mode 100644 src/fiber_package/signup/howto-add-new-question.txt

diff --git a/src/fiber_package/signup/answer/answer_checkmarks.py b/src/fiber_package/signup/answer/answer_checkmarks.py
new file mode 100644
index 0000000..8988750
--- /dev/null
+++ b/src/fiber_package/signup/answer/answer_checkmarks.py
@@ -0,0 +1,9 @@
+from typing import Literal
+
+from .answer_base import AnswerBase
+from fiber_package.signup.enums import FormElementCategory
+
+class AnswerOpenQuestions(AnswerBase):
+    category: Literal[FormElementCategory.checkmarks]
+
+    answer_list: list[bool]
diff --git a/src/fiber_package/signup/element/form_checkmarks.py b/src/fiber_package/signup/element/form_checkmarks.py
new file mode 100644
index 0000000..f7694cb
--- /dev/null
+++ b/src/fiber_package/signup/element/form_checkmarks.py
@@ -0,0 +1,28 @@
+from typing import Literal
+from pydantic import BaseModel
+
+from .form_base_question import FormBaseQuestion
+from fiber_package.signup.enums import FormElementCategory
+
+from fiber_package.signup.answer.answer_open_questions import AnswerCheckmarks
+
+class CheckmarkQuestion(BaseModel):
+    question_en: str
+    question_nl: str
+
+class FormCheckmarks(FormBaseQuestion):
+    category: Literal[FormElementCategory.checkmarks]
+
+    questions: list[CheckmarkQuestion]
+
+    def validate_answer(self, answer: AnswerCheckmarks) -> None:
+        if answer.question_name != self.name:
+            raise ValueError("Answer question name does not match.")
+
+        answer_list = answer.answer_list
+        if len(answer_list) != len(self.questions):
+            raise ValueError("Length of answer question list does not match.")
+
+
+
+
diff --git a/src/fiber_package/signup/element/types.py b/src/fiber_package/signup/element/types.py
index 77a6f4b..76c8a36 100644
--- a/src/fiber_package/signup/element/types.py
+++ b/src/fiber_package/signup/element/types.py
@@ -3,6 +3,7 @@ from typing import Annotated
 from pydantic import Field
 
 from .form_open_questions import FormOpenQuestions
+from .form_checkmarks import FormCheckmarks
 from .form_text import FormText
 from .form_title import FormTitle
 
@@ -12,7 +13,7 @@ FormTextUnion = Annotated[
 ]
 
 FormQuestionUnion = Annotated[
-    FormOpenQuestions,
+    FormOpenQuestions | FormCheckmarks,
     Field(discriminator="category")
 ]
 
diff --git a/src/fiber_package/signup/enums.py b/src/fiber_package/signup/enums.py
index d62f853..5cb289d 100644
--- a/src/fiber_package/signup/enums.py
+++ b/src/fiber_package/signup/enums.py
@@ -8,9 +8,11 @@ class FormElementCategory(StrEnum):
     text_piece = "text_piece"
     title_text = "title_text"
     open_questions = "open_questions"
+    checkmarks = "checkmarks"
 
 FormQuestionCategory = Literal[
-    FormElementCategory.open_questions
+    FormElementCategory.open_questions,
+    FormElementCategory.checkmarks
 ]
 
 FormTextCategory = Literal[
diff --git a/src/fiber_package/signup/howto-add-new-question.txt b/src/fiber_package/signup/howto-add-new-question.txt
new file mode 100644
index 0000000..cd1f921
--- /dev/null
+++ b/src/fiber_package/signup/howto-add-new-question.txt
@@ -0,0 +1,8 @@
+In order to add a new question type you need to:
+
+1) Make a new tag in enums.py
+2) add it to the list of question tags
+3) Create the FormXXX in element
+4) Create the AnswerXXX in answer
+5) Add it to the question union type in answer.types
+6) Add it to fiber-django
\ No newline at end of file
diff --git a/src/fiber_package/signup/notes.txt b/src/fiber_package/signup/notes.txt
index d9a6f03..7df7049 100644
--- a/src/fiber_package/signup/notes.txt
+++ b/src/fiber_package/signup/notes.txt
@@ -34,11 +34,6 @@ List of question types:
 * feedback --> feedabck (str)
 * team --> teamname (str)
 
-Maybe a bug?
-If nnvbijdrage is set but nnv is not part of activity,
-then everybody pays the LOW price as if NNV pays ??!!
-Not a bug! You cannot set NNV if NNV is not part of sjabloon!
-... its handled by custom js.... 
 
 
 omg it is TERRIBLE. In Silk every sjabloon has its OWN template ?!

From 71853ac32d0923e6215799459a267fdda52e73a1 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 16:51:41 +0200
Subject: [PATCH 15/23] New type + questions

---
 src/fiber_package/signup/answer/answer_checkmarks.py | 2 +-
 src/fiber_package/signup/element/form_checkmarks.py  | 2 +-
 src/fiber_package/signup/howto-add-new-question.txt  | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/fiber_package/signup/answer/answer_checkmarks.py b/src/fiber_package/signup/answer/answer_checkmarks.py
index 8988750..95c3842 100644
--- a/src/fiber_package/signup/answer/answer_checkmarks.py
+++ b/src/fiber_package/signup/answer/answer_checkmarks.py
@@ -3,7 +3,7 @@ from typing import Literal
 from .answer_base import AnswerBase
 from fiber_package.signup.enums import FormElementCategory
 
-class AnswerOpenQuestions(AnswerBase):
+class AnswerCheckmarks(AnswerBase):
     category: Literal[FormElementCategory.checkmarks]
 
     answer_list: list[bool]
diff --git a/src/fiber_package/signup/element/form_checkmarks.py b/src/fiber_package/signup/element/form_checkmarks.py
index f7694cb..36887f5 100644
--- a/src/fiber_package/signup/element/form_checkmarks.py
+++ b/src/fiber_package/signup/element/form_checkmarks.py
@@ -4,7 +4,7 @@ from pydantic import BaseModel
 from .form_base_question import FormBaseQuestion
 from fiber_package.signup.enums import FormElementCategory
 
-from fiber_package.signup.answer.answer_open_questions import AnswerCheckmarks
+from fiber_package.signup.answer.answer_checkmarks import AnswerCheckmarks
 
 class CheckmarkQuestion(BaseModel):
     question_en: str
diff --git a/src/fiber_package/signup/howto-add-new-question.txt b/src/fiber_package/signup/howto-add-new-question.txt
index cd1f921..b6ed00d 100644
--- a/src/fiber_package/signup/howto-add-new-question.txt
+++ b/src/fiber_package/signup/howto-add-new-question.txt
@@ -5,4 +5,5 @@ In order to add a new question type you need to:
 3) Create the FormXXX in element
 4) Create the AnswerXXX in answer
 5) Add it to the question union type in answer.types
+Tip: run ./pre-commit to run the typechecker to see if you got your imports right!
 6) Add it to fiber-django
\ No newline at end of file

From 9f513271ac8fcba3c971905c2e2e49a70defc317 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:07:20 +0200
Subject: [PATCH 16/23] rename to singular

---
 src/fiber_package/{events => event}/activity.py      | 0
 src/fiber_package/{events => event}/communication.py | 0
 src/fiber_package/{events => event}/enums.py         | 0
 src/fiber_package/{events => event}/notes.txt        | 0
 src/fiber_package/{events => event}/submodels.py     | 0
 src/fiber_package/signup/howto-add-new-question.txt  | 5 ++++-
 6 files changed, 4 insertions(+), 1 deletion(-)
 rename src/fiber_package/{events => event}/activity.py (100%)
 rename src/fiber_package/{events => event}/communication.py (100%)
 rename src/fiber_package/{events => event}/enums.py (100%)
 rename src/fiber_package/{events => event}/notes.txt (100%)
 rename src/fiber_package/{events => event}/submodels.py (100%)

diff --git a/src/fiber_package/events/activity.py b/src/fiber_package/event/activity.py
similarity index 100%
rename from src/fiber_package/events/activity.py
rename to src/fiber_package/event/activity.py
diff --git a/src/fiber_package/events/communication.py b/src/fiber_package/event/communication.py
similarity index 100%
rename from src/fiber_package/events/communication.py
rename to src/fiber_package/event/communication.py
diff --git a/src/fiber_package/events/enums.py b/src/fiber_package/event/enums.py
similarity index 100%
rename from src/fiber_package/events/enums.py
rename to src/fiber_package/event/enums.py
diff --git a/src/fiber_package/events/notes.txt b/src/fiber_package/event/notes.txt
similarity index 100%
rename from src/fiber_package/events/notes.txt
rename to src/fiber_package/event/notes.txt
diff --git a/src/fiber_package/events/submodels.py b/src/fiber_package/event/submodels.py
similarity index 100%
rename from src/fiber_package/events/submodels.py
rename to src/fiber_package/event/submodels.py
diff --git a/src/fiber_package/signup/howto-add-new-question.txt b/src/fiber_package/signup/howto-add-new-question.txt
index b6ed00d..e948dbf 100644
--- a/src/fiber_package/signup/howto-add-new-question.txt
+++ b/src/fiber_package/signup/howto-add-new-question.txt
@@ -6,4 +6,7 @@ In order to add a new question type you need to:
 4) Create the AnswerXXX in answer
 5) Add it to the question union type in answer.types
 Tip: run ./pre-commit to run the typechecker to see if you got your imports right!
-6) Add it to fiber-django
\ No newline at end of file
+6) Add it to fiber-django
+    6a) Add it to the process_question function event/util.py
+    6b) Add it to core/templates/form 
+    6c) Add it to the form page (currently dlfsite/templates/testing/form.html)
\ No newline at end of file

From 22859b679ffd0edce5f1299a03fb2195c54676bc Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:09:12 +0200
Subject: [PATCH 17/23] renamed collection to event to match folder name

---
 src/fiber_package/refs.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/fiber_package/refs.py b/src/fiber_package/refs.py
index b6ddd0a..e74312d 100644
--- a/src/fiber_package/refs.py
+++ b/src/fiber_package/refs.py
@@ -13,7 +13,7 @@ CollectionName = Literal[
     "committee_edition",
     "guild",
     "signup",
-    "communication"
+    "event"
 ]
 
 C = TypeVar("C", bound=str)
@@ -53,8 +53,8 @@ GuildRefList = RefList[Literal["guild"]]
 SignupRef = Ref[Literal["signup"]]
 SignupRefList = RefList[Literal["signup"]]
 
-CommunicationRef = Ref[Literal["communication"]]
-CommunicationRefList = Ref[Literal["communication"]]
+CommunicationRef = Ref[Literal["event"]]
+CommunicationRefList = Ref[Literal["event"]]
 
 # Activities are stored in the collection of communications
 ActivityRef = CommunicationRef

From 5e4787665e62865a54ec7af247f632db705c443f Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:23:45 +0200
Subject: [PATCH 18/23] added extra step

---
 src/fiber_package/signup/answer/types.py            | 3 ++-
 src/fiber_package/signup/howto-add-new-question.txt | 5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/fiber_package/signup/answer/types.py b/src/fiber_package/signup/answer/types.py
index 8f9effd..92c17e8 100644
--- a/src/fiber_package/signup/answer/types.py
+++ b/src/fiber_package/signup/answer/types.py
@@ -3,8 +3,9 @@ from typing import Annotated
 from pydantic import Field
 
 from .answer_open_questions import AnswerOpenQuestions
+from .answer_checkmarks import AnswerCheckmarks
 
 AnswerUnion = Annotated[
-    AnswerOpenQuestions,
+    AnswerOpenQuestions, AnswerCheckmarks
     Field(discriminator="category")
 ]
diff --git a/src/fiber_package/signup/howto-add-new-question.txt b/src/fiber_package/signup/howto-add-new-question.txt
index e948dbf..7c931ae 100644
--- a/src/fiber_package/signup/howto-add-new-question.txt
+++ b/src/fiber_package/signup/howto-add-new-question.txt
@@ -4,9 +4,10 @@ In order to add a new question type you need to:
 2) add it to the list of question tags
 3) Create the FormXXX in element
 4) Create the AnswerXXX in answer
-5) Add it to the question union type in answer.types
+5) Add it to the answer union type in answer.types
+6) Add it to the question union type in element.types 
 Tip: run ./pre-commit to run the typechecker to see if you got your imports right!
-6) Add it to fiber-django
+7) Add it to fiber-django
     6a) Add it to the process_question function event/util.py
     6b) Add it to core/templates/form 
     6c) Add it to the form page (currently dlfsite/templates/testing/form.html)
\ No newline at end of file

From 0cc1bf48618fe1940f97d2b125dc38ef12588fbe Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:23:59 +0200
Subject: [PATCH 19/23] typo

---
 src/fiber_package/signup/answer/types.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fiber_package/signup/answer/types.py b/src/fiber_package/signup/answer/types.py
index 92c17e8..51749a6 100644
--- a/src/fiber_package/signup/answer/types.py
+++ b/src/fiber_package/signup/answer/types.py
@@ -6,6 +6,6 @@ from .answer_open_questions import AnswerOpenQuestions
 from .answer_checkmarks import AnswerCheckmarks
 
 AnswerUnion = Annotated[
-    AnswerOpenQuestions, AnswerCheckmarks
+    AnswerOpenQuestions, AnswerCheckmarks,
     Field(discriminator="category")
 ]

From d94e1bda81d6cc76b083896e01b86fea137e6b10 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:25:38 +0200
Subject: [PATCH 20/23] another typo

---
 src/fiber_package/signup/answer/types.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fiber_package/signup/answer/types.py b/src/fiber_package/signup/answer/types.py
index 51749a6..41131bf 100644
--- a/src/fiber_package/signup/answer/types.py
+++ b/src/fiber_package/signup/answer/types.py
@@ -6,6 +6,6 @@ from .answer_open_questions import AnswerOpenQuestions
 from .answer_checkmarks import AnswerCheckmarks
 
 AnswerUnion = Annotated[
-    AnswerOpenQuestions, AnswerCheckmarks,
+    AnswerOpenQuestion | AnswerCheckmarks,
     Field(discriminator="category")
 ]

From 5c4aac62cb63c779a63a7976a1fb45fee65ca30e Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:26:22 +0200
Subject: [PATCH 21/23] third typo hihi

---
 src/fiber_package/signup/answer/types.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fiber_package/signup/answer/types.py b/src/fiber_package/signup/answer/types.py
index 41131bf..8d31d00 100644
--- a/src/fiber_package/signup/answer/types.py
+++ b/src/fiber_package/signup/answer/types.py
@@ -6,6 +6,6 @@ from .answer_open_questions import AnswerOpenQuestions
 from .answer_checkmarks import AnswerCheckmarks
 
 AnswerUnion = Annotated[
-    AnswerOpenQuestion | AnswerCheckmarks,
+    AnswerOpenQuestions | AnswerCheckmarks,
     Field(discriminator="category")
 ]

From 249e6851b4505ac767bea101a80b206e8fb03178 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:37:37 +0200
Subject: [PATCH 22/23] fixed bug (python is weak, no my fault i swear)

---
 src/fiber_package/event/activity.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/fiber_package/event/activity.py b/src/fiber_package/event/activity.py
index 60fb0b8..c0aeae7 100644
--- a/src/fiber_package/event/activity.py
+++ b/src/fiber_package/event/activity.py
@@ -10,6 +10,7 @@ from .enums import CommunicationCategory
 from fiber_package.refs import SignupRefList
 from fiber_package.signup.signup import SignupModel
 from fiber_package.signup.util import validate_answer
+from fiber_package.signup.enums import is_question_category
 
 from fiber_package.signup.element.form_base_question import FormBaseQuestion
 
@@ -46,7 +47,7 @@ class ActivityModel(CommunicationModel):
         question_dict: dict[str, FormBaseQuestion] = {}
 
         for element in self.form:
-            if isinstance(element, FormTextUnion):
+            if not is_question_category(element.category):
                 continue
             # so we know it is istance of FormBaseQuestion
             answerable.add(element.name)

From f308f96616ef0ea41ed1ec88b838e39f88091894 Mon Sep 17 00:00:00 2001
From: Tiago Scholten <tiagoscholten9@gmail.com>
Date: Sat, 17 Oct 2026 17:39:40 +0200
Subject: [PATCH 23/23] added default value for checkboxes

---
 src/fiber_package/signup/element/form_checkmarks.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/fiber_package/signup/element/form_checkmarks.py b/src/fiber_package/signup/element/form_checkmarks.py
index 36887f5..d0af93c 100644
--- a/src/fiber_package/signup/element/form_checkmarks.py
+++ b/src/fiber_package/signup/element/form_checkmarks.py
@@ -9,6 +9,7 @@ from fiber_package.signup.answer.answer_checkmarks import AnswerCheckmarks
 class CheckmarkQuestion(BaseModel):
     question_en: str
     question_nl: str
+    default: bool = False
 
 class FormCheckmarks(FormBaseQuestion):
     category: Literal[FormElementCategory.checkmarks]