1 controller = 1 model VS. 1 controller = multiple model

Your controllers SHOULDN'T have a 1:1 relationship with models. They are taking care of different things.

A model should handle an entity, such as a single database table. Your controller calls upon your different models for data.

For example, let's say during registration, you have to create your user and create a profile he belongs to. Your registration controller should call the UserModel & the ProfileModel.

Any business logic relating to users or profiles should be in their models.

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