Wrapping Things Inside a Service
Learn how to create a cart service and move all the heavy cart functionality codes from the controller to the service.
We'll cover the following...
Right now, the addToCart functionality is part of the controller, which doesn’t reflect good design.
This is why the code for addToCart() is so dense, because we don’t have all those temporary variables and intermediate bits of state. By cutting that out, what’s left are operations that do the real lifting. Each line moves things forward. Hence, we’ll simply move it to a different service.
A consequence of this is that our web controllers can quickly ...