CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3
flyingarmadillo
flyingarmadillo

Reputation: 2139

Where to methods by used by all objects?

I am developing a rails app and I want all my objects to have a certain method that process them. Now, while I realize that I could write that method in each object's model, I would rather stick with the DRY (don't repeat yourself) theory and place the method in one place.

Is there a place I could place a method where all my objects have access to?

Upvotes: 0

Views: 35

Answers (2)

Joeyjoejoejr
Joeyjoejoejr

Reputation: 914

Ruby and rails offer a number of options depending on what object you want to have access to a method.

ChiuBaka's answer is one option, however rails in particular offers a number of more readable options.

If you are looking for something on the controller/view level. You can simply place it in the app/helpers/application_helper.rb file. If you want to limit access you can create controller specific helper files in the same directory.

If you are looking at models. You can simply create a base model that inherits from activerecord::base, implement your method there, and then have your models inherit from that.

class MyBase < ActiveModel::Base
  def myinstancemethod
  end

  def myclassmethod
  end
end

then

class MyModel < MyBase

end

then you can call like so

instance = MyModel.new
instance.myinstancemethod

or

MyModel.myclassmethod

Upvotes: 3

Chiubaka
Chiubaka

Reputation: 789

Place the code you want in all of your models in a module in your /lib folder and require it in your models.

Upvotes: 0

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