Task 3 - Limit the number of talks per session
Aim of this task is to limit the number of talks that user can add to single session.
- At the creation talk template we need to display the number of talks
- if session has already maximum number of talks:
- disable "Add talk" button
- mark talks number counter with red color
- Add new field to
Session model (
- Remember to add a migration after changing the model.
- Run migration in order to actually change state of the database.
- Implement validation at the talk serializer when creating new talk.