Create a collection in Magento

We can now query, save & delete records with a resource model, but we can’t yet retrieve a list of records out of the database. This is when a collection comes into play.

Collections are actually considered an extension of the resource model, and will allow us to retrieve many records at once.

They are set up similarly to a model & resource model — very simple.

First, we’ll create our Collection class. The naming of this is a bit different from our model & resource model, which are named directly after the entities they relate to. Rather than also naming this Post, we will create...