Saving linked models in the same view

It could be convenient to save different kind of models in the same view. This approach allows us to save time and to navigate from every single detail until a final item that merges all data is created. Handling different kind of models linked to each other it is not so different from what we have seen so far. The only point to take care of is the link (foreign keys) between models, which we must ensure is valid.

Therefore, the controller action will receive the $_POST data encapsulated in the model's class name container; if we are thinking, for example, of the customer and reservation models, we will have two arrays in the $_POST variable, $_POST['Customer'] and $_POST['Reservation'], containing all the fields about the customer and reservation models.

Then all data must be saved together. It is advisable to use a database transaction while saving data because the action can be considered as ended only when all the data has been saved.

Using database...