Cont. feat: expose database connection to ActiveModelBehaviour's methods

[billy1624]

PR Info

• Closes More context for ActiveModelBehaviour #962
• Continue feat: expose database connection to ActiveModelBehaviour's methods #1145

New Features

• before_save, after_save, before_delete and after_delete methods of ActiveModelBehavior receive db connection as the parameter

Breaking Changes

• The ActiveModelBehaviour trait becomes async trait
  • For anyone who implement the ActiveModelBehaviour with default implementation (no-op). No code changes is required.

    impl ActiveModelBehavior for ActiveModel {}

  • If you overridden the default implementation:

    #[async_trait::async_trait]
    impl ActiveModelBehavior for ActiveModel {
        async fn before_save<C>(self, db: &C, insert: bool) -> Result<Self, DbErr>
        where
            C: ConnectionTrait,
        {
            // ...
        }
    
        // ...
    }

[billy1624]

Hey @tyt2y3, we can include this in the upcoming release

[tyt2y3]

We need to have a test entity and some test cases for this

[billy1624]

Tests added

[tyt2y3]

Interesting

[tyt2y3]

I feel like we will have a lot of documentation to write

[billy1624]

I feel like we will have a lot of documentation to write

Yes, lots of breaking changes to be documented not to mention the new features lolll