How to alias a class method in rails model?

Question

I want to alias a class method on one of my Rails models.

  def self.sub_agent
   id = SubAgentStatus.where(name: \"active\").first.id
   where(type: \"SubAg         


        

Answer 1

class Foo

  def self.sub_agent
    id = SubAgentStatus.where(name: "active").first.id
    where(type: "SubAgent",sub_agent_status_id: id).order(:first_name) 
  end

  self.singleton_class.send(:alias_method, :sub_agent_new, :sub_agent)

end

Answer 2

A quick reminder that would have gotten me to the right behaviour a bit faster is that this alias_method'ing should happen as the last thing of your class definition.

class Foo
  def self.bar(parameter)
    ....
  end

  ...

  singleton_class.send(:alias_method, :new_bar_name, :bar)
end

Good luck! Cheers

Answer 3

I can confirm that:

class <<self
  alias_method :alias_for_class_method, :class_method
end

works perfectly even when it is inherited from a base class. Thanks!

Answer 4

You can use:

class Foo  
   def instance_method       
   end  

   alias_method :alias_for_instance_method, :instance_method

   def self.class_method
   end  

   class <<self  
     alias_method :alias_for_class_method, :class_method
   end  
 end  

OR Try:

self.singleton_class.send(:alias_method, :new_name, :original_name)

Answer 5

To add instance method as an alias for class method you can use delegate :method_name, to: :class

Example:

class World
  def self.hello
    'Hello World'
  end

  delegate :hello, to: :class
end

World.hello
# => 'Hello World'
World.new.hello
# => 'Hello World'

Link on documentation