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POHow to write a Rails mixin that spans across model, controller, and view
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  1. POHow to write a Rails mixin that spans across model, controller, and view
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    copied!<p>In an effort to reduce code duplication in my little Rails app, I've been working on getting common code between my models into it's own separate module, so far so good.</p> <p>The model stuff is fairly easy, I just have to include the module at the beginning, e.g.:</p> <pre><code>class Iso &lt; Sale include Shared::TracksSerialNumberExtension include Shared::OrderLines extend Shared::Filtered include Sendable::Model validates_presence_of :customer validates_associated :lines owned_by :customer def initialize( params = nil ) super self.created_at ||= Time.now.to_date end def after_initialize end order_lines :despatched # tracks_serial_numbers :items sendable :customer def created_at=( date ) write_attribute( :created_at, Chronic.parse( date ) ) end end </code></pre> <p>This is working fine, now however, I'm going to have some controller and view code that's going to be common between these models as well, so far I have this for my sendable stuff:</p> <pre><code># This is a module that is used for pages/forms that are can be "sent" # either via fax, email, or printed. module Sendable module Model def self.included( klass ) klass.extend ClassMethods end module ClassMethods def sendable( class_to_send_to ) attr_accessor :fax_number, :email_address, :to_be_faxed, :to_be_emailed, :to_be_printed @_class_sending_to ||= class_to_send_to include InstanceMethods end def class_sending_to @_class_sending_to end end # ClassMethods module InstanceMethods def after_initialize( ) super self.to_be_faxed = false self.to_be_emailed = false self.to_be_printed = false target_class = self.send( self.class.class_sending_to ) if !target_class.nil? self.fax_number = target_class.send( :fax_number ) self.email_address = target_class.send( :email_address ) end end end end # Module Model end # Module Sendable </code></pre> <p>Basically I'm planning on just doing an include Sendable::Controller, and Sendable::View (or the equivalent) for the controller and the view, but, is there a cleaner way to do this? I 'm after a neat way to have a bunch of common code between my model, controller, and view.</p> <p>Edit: Just to clarify, this just has to be shared across 2 or 3 models.</p>
 

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