Yii. Is it possible to see in beforeSave which fields of the model will be updated?

Question

Yii

Is it possible to see in beforeSave which fields of the model will be updated? And How?

Answer 1

All fields will be updated.
If you want to know which fields have been changed, save the original values ​​in afterFind and compare with the new ones in beforeSave.
The ability to update only dirty fields appeared only in the second version.

Answer 2

1. in beforeSave get the object from the database and diff the _attributes property.
2. overload the magic set method, and remember what has changed, writing somewhere the field, the changed and the old value.

Answer 3

Well, at least you can select the current object from the database in beforeSave and compare its fields with the new one.