What is the difference between scope and class methods in Ruby?

What is the difference between scope and class methods in Ruby?

In Ruby, class methods are defined on the class itself and can be called directly on the class. Scope methods, on the other hand, are typically used in ActiveRecord to define queries that can be called on an instance of a model.

Can you give me an example of a class method?

Sure! A class method can be defined like this: def self.my_class_method; end. You can call it using MyClass.my_class_method.

And how do I define a scope method?

You define a scope method in ActiveRecord like this: scope :active, -> { where(active: true) }. You can call it with ModelName.active.

When should I use class methods over scope methods?

Use class methods for functionality that doesn't involve querying the database, and scope methods for reusable query logic.