CODEWITHSUNDEEP
ruby-on-railsruby
Viktor
Viktor

Reputation: 353

Rails.Share variable between 2 models(Validation)

So having some troubles how to resolve my puzzle.

I'm having 2 models

1) Mode1.rb

class Model1 < ActiveRecord::Base
  set_table_name "Model1"
  set_sequence_name "Model1"  

    module Validate
      def validate_discount
        errors.add(:discount, "#blank") if discount.blank?
      end
    end
end

2) Model2.rb

class Model2 < ActiveRecord::Base
  include Model1::Validate

  validate :validate_discount

end

What i need? The trouble is that on submit page operating model2, so i need to execute validation from there to get proper error display, but as discount exists only in model1 i need to pass it to model2

The error what i get is now: 

undefined local variable or method `discount' for #<Model2:0x12c952f8>

Might i need somehow pass it through the controller? I mean smth like this:

Model2.new
Model2["discount"] = 20
Model2.discount

I'm stuck now.

Upvotes: 0

Views: 103

Answers (1)

Roman Alekseiev
Roman Alekseiev

Reputation: 1920

I think you can use attr_accessor for this purpose. With that you can set and get value of discount attribute.

class Model2 < ActiveRecord::Base
  include Model1::Validate

  attr_accessor :discount

  validate :validate_discount

end

With this you can call:

model2 = Model2.new
model2.discount = params[:discount] #or whatever you set value for discount

And then validate it with your Model1::Validate module.

Upvotes: 1

Related Questions