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If you inherit ChildModel from BaseModel, when you get to the save method in BaseModel 'self.class' is still ChildModel. So it finds the super of Child, which is BaseModel, so calls the save in BaseModel.

If you inherit ChildModel from BaseModel, when you get to the save method in BaseModel 'self.class' is still ChildModel. So it finds the super of Child, which is BaseModel, so calls the save in BaseModel.

So just call ,

super(ChildModel, self).save(*args, **kwargs) 

If you inherit ChildModel from BaseModel, when you get to the save method in BaseModel 'self.class' is still ChildModel. So it finds the super of Child, which is BaseModel, so calls the save in BaseModel.

So just add this line to the end of your operations in Child model:

super(Child, self).save(*args, **kwargs) 

If you inherit ChildModel from BaseModel, when you get to the save method in BaseModel 'self.class' is still ChildModel. So it finds the super of Child, which is BaseModel, so calls the save in BaseModel.

If you inherit ChildModel from BaseModel, when you get to the save method in BaseModel self class is still ChildModel. So it finds the super of Child, which is BaseModel, so calls the save in BaseModel.

If you inherit ChildModel from BaseModel, when you get to the save method in BaseModel 'self.class' is still ChildModel. So it finds the super of Child, which is BaseModel, so calls the save in BaseModel.

So just add this line to the end of your operations in Child model:

super(Child, self).save(*args, **kwargs)