Ruby Optimization Inheritance class instance

This article mainly introduces the example of Ruby optimization inheritance class, this article directly gives an example of optimization and implementation code, the need for friends can refer to the following

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

The code is 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

The code is 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:

The code is as follows:

It ' should create a activation code ' do

admin = Factory (: Administrator)

Admin.make_activation_code

Admin.activation_code.should_not Be_empty

End