optimizer.py 文件源码

def reduce_alter_field_rename_field(self, operation, other, in_between):
        if (operation.model_name_lower == other.model_name_lower and
                operation.name_lower == other.old_name_lower):
            return [
                other,
                migrations.AlterField(
                    model_name=operation.model_name,
                    name=other.new_name,
                    field=operation.field,
                ),
            ]