Ruby Optimization Inheritance class instance _ruby topic

Source: Internet
Author: User

In the rails principle there is the idea of simplifying controller, enriching model. A simple inheritance optimization is shown below with an example. Especially when you have a change self variable in your method.

Suppose we have the following model

Copy Code code as follows:

Class Subjectmatterexpert < User
Include Hashcodecreatormodule
def Make_activation_code
Self.deleted_at = Nil
Self.activation_code | | = Make_hash_code
End
End

Class Administrator < User
Include Hashcodecreatormodule
def Make_activation_code
Self.deleted_at = Nil
Self.activation_code | | = Make_hash_code
End
End

We can simplify the code by inheriting using the following Subjectmatterexpert Administrator

Copy Code code as follows:

Class Subjectmatterexpert < User
End

Class Administrator < User
End

Class User
Include Hashcodecreatormodule
def Make_activation_code
Self.deleted_at = Nil
Self.activation_code | | = Make_hash_code
End

Then we can use this in the test:

Copy Code code as follows:

It ' should create a activation code ' do
admin = Factory (: Administrator)
Admin.make_activation_code
Admin.activation_code.should_not Be_empty
End

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