Dependent Restrict
A gem for rails 2, 3 and 4 that retrofits and improves rails 4 functionality
Rails 4 offers 2 very useful dependent restrictions:
dependent: :raise_with_exception
dependent: :raise_with_error
In rails 3 it was just:
dependent: :raise
In rails 2 these didn't exist, it was just
dependent: destroy
Which is available in rails 2, 3 and 4
Differences from standard rails 4
- Error includes detailed message which shows up to 5 of the records that are dependent
This is useful for users to know which dependencies must be removed before they can
remove the parent record