About

In times of form objects and Law Of Demeter enforcement, delegate_accessors comes to rescue dry up your PORO classes.

Usage

Let's say you are a good boy and uses form objects to handle, for instance, user signs up. Most of the time you'll catch yourself delegating both readers and writers for the target model:

class SignupForm
    include ActiveModel::Model
    
    delegate :first_name, :first_name=, to: :user
    delegate :project_name, to: :first_project
    
    def submit
        if valid?
            # whatever your app does
        end
    end
    
    def user
        @user = User.new
    end
    
    def first_project
        @project = Project.new
    end
end

This tends to get messy when you delegate more and more attributes:

delegate :first_name, :first_name=, :last_name, :last_name=, :age, :age=, :ssn, :ssn=, :facebook_login, :facebook_login=, to: :user

You can use delegate_accessors to slice the delegate line in half:

delegate_accessors :first_name, :last_name, :age, :ssn, :facebook_login, to: :user

If you have no ideia what form object are or why they're so important, consider digging these references:

• ActiveModel Form Objects
• 7 Patterns to Refactor Fat ActiveRecord Models
• Form Object Railscast

Installation

Add this line to your application's Gemfile:

gem 'delegate_accessors'

And then execute:

$ bundle

Or install it yourself as:

$ gem install delegate_accessors

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request