Fix Question and Question Dependency Creation Error (500) and Restore Question Management Functionality in Tickets Component

[mariobehling]

Currently, in the Tickets component, organizers cannot create new questions or question dependencies.
Attempting to create or save a new question results in a 500 Internal Server Error.

The system is intended to allow organizers to create both:

1. Standalone questions (e.g., text, choice, checkbox, etc.)
2. Dependent questions (questions that only appear when a specific answer to another question is selected).

This feature previously allowed flexible attendee data collection and is critical for registration and order customization.

Expected Behavior

Organizers should be able to:

• Create and edit questions under Event → Settings → Questions.
• Define a parent question and dependency conditions (for example, show “Meal preference” only if “Meals included” = Yes).
• Save questions and dependencies successfully without a 500 error.
• See dependent questions appear dynamically in the order or registration form when the condition is met.

Steps to Reproduce

1. Log in as an Organizer or Admin.

2. Go to:

   /control/event/<orgname>/<eventslug>/questions/
   

3. Click Create Question.

4. Fill out required fields such as:

   • Question text
   • Type (choice, text, boolean, etc.)
   • Target (per-order or per-attendee)

5. Click Save → Observe:
   Result: 500 Internal Server Error appears.

6. When attempting to create a dependent question:

   • Create a base question (e.g., “Do you need accommodation?” → type: yes/no).
   • Then create a second question (e.g., “Preferred room type”) and choose the first question as the dependency.
   • Select dependency condition (e.g., show only if answer = “Yes”).
   • Click Save → 500 error appears again.

Expected Result

• Question creation and editing work without error.
• Dependencies between questions can be defined and saved.
• Dependent questions appear dynamically on the order form according to their parent question’s answer.

Technical Notes

• Investigate error source in the question creation or dependency save view:
  Likely file:

  app/eventyay/base/views/questions.py
  

  or similar Django view handling QuestionForm and QuestionDependencyForm.

• Check related models:

  • Question
  • QuestionDependency
  • Any associated Choice or QuestionOption models.

• Verify form and template logic for dependencies:

  • Confirm that the parent question dropdown correctly loads existing questions.
  • Ensure dependency values are passed and validated properly.
  • Check form POST handling and validation errors are caught instead of raising 500s.

• Verify migrations and database constraints for:

  • Nullability of dependency fields.
  • Integrity constraints between question IDs.

• Implement front-end rendering logic for conditional questions using existing JavaScript (or re-enable the logic if disabled).

Testing Instructions

1. Test Creating a Question (no dependency):

• Navigate to the event’s question settings page.

• Click Create Question.

• Enter:

  • Text: “Do you require special assistance?”
  • Type: Boolean (Yes/No).
  • Target: Attendee.

• Save.

• Confirm it appears in the list of questions and on the attendee registration form.

2. Test Creating a Dependent Question:

• Create a new question:

  • Text: “Please specify your accessibility needs.”
  • Type: Text.
  • Set dependency: Show only if “Do you require special assistance?” = “Yes”.

• Save.

• On the registration page:

  • Select “Yes” to the first question → the dependent question appears.
  • Select “No” → dependent question remains hidden.

3. Test Editing Existing Questions:

• Edit both types of questions, update text, and confirm changes save without errors.

4. Test Deletion and Validation:

• Delete a dependent question and confirm the parent question remains valid.
• Delete a parent question and verify the system correctly deletes or disables related dependencies.

Acceptance Criteria

• Creating a question no longer results in a 500 error.
• Dependent questions can be created and saved correctly.
• Dependencies behave correctly on registration and order forms.
• Validation errors are shown to the user (not 500).
• All CRUD operations (create, edit, delete) work for both questions and dependencies.
• Automated tests for question creation, dependency creation, and conditional rendering are added.

Related Areas

• Question and QuestionDependency models
• Admin and organizer question management pages
• Registration and attendee form rendering logic