- What is "scope" under Rails?
Scope is a way to simplify ORM (Object-Relational Mapping) language into a packet that's stationed in the Model, which can then be called for anytime such packet is needed in the Controller.
- Why do we use scope?
Scope makes it easy to place complex relationships out of the way in the Model to make the Controller clean.
- How to use scope?
Under the designated Model file, use scope to define a keyword to take on the meaning of the scope, for instance under the
This can then be called for in the controller: