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Changes between Initial Version and Version 1 of Ticket #37168, comment 2

initial	v1
1		We wanted to add `DatabaseDefault()` to the list of `Field.empty_values` and modify its `__hash__` and `__eq__`. Unfortunately, ~~there is an issue in importing `DatabaseDefault` anywhere in the `forms` module and `expression` is required to initialize `DatabaseDefault`. I'm thinking about adding `is_value_empty()` hook to the `~~Field`:
	1	We wanted to add `DatabaseDefault()` to the list of `Field.empty_values` and modify its `__hash__` and `__eq__`. Unfortunately, `expression` is required to initialize `DatabaseDefault` and, TBH, `DatabaseDefaults` with different expression should not be consider equal. I'm thinking about adding `is_value_empty()` hook to the `models.Field`:
2	2	{{{#!python
3	3	def is_value_empty(self, value):