What do default values for columns actually do?

[campbellcole]

I've been trying to understand what #[sea_orm(default_value = ...)] and ColumnDef::default_value() actually do to the generated objects. Since the model must have every field, at what point is this default value used? Is it used when an ActiveModel with the corresponding column = ActiveValue::Unset gets inserted?

Thanks in advance.

[tyt2y3]

It's the corresponding database default expression, like default current_timestamp, or default 1.
It's not related to the ActiveModel.

[campbellcole]

So is the database responsible for providing this value? If I'm understanding correctly, it doesn't actually do anything to the code but it signals to the developer that the database will use this value if it is omitted in an ActiveModel? Thank you for the reply.