Rails Ruby on Rails → 3.0.2

Comments and changes to this ticket

• 

  Yehuda Katz (wycats) March 27th, 2010 @ 09:24 AM

  • State changed from “new” to “invalid”
  • Assigned user set to “Yehuda Katz (wycats)”
  • Milestone cleared.

  If you want to use ActiveModel observers outside of ActiveRecord, you will need to include the ActiveModel observer model as such:

  class Post
    include MongoMapper::Document
    include ActiveModel::Observing
  
    def create(*)
      notify_observers(:before_create, self)
      value = super
      notify_observers(after_create, self)
      value
    end
  end
  

  If you wish, you can create a module that you can mix in to any MongoMapper model with observing powers:

  module MongoMapper
    module Observing
      # This will make sure that ActiveModel::Observing is included onto any model
      # that MongoMapper::Observing is included onto
      extend ActiveSupport::Concern
      include ActiveModel::Observing
  
      def create(*)
        notify_observers(:before_create, self)
        value = super
        notify_observers(after_create, self)
        value
      end
  
    end
  end
  
  class Post
    include MongoMapper::Document
    include MongoMapper::Observer
  end
  

  That said, the MongoMapper folks should probably provide something like this out of the box.

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  Mike (at coverallcrew) March 27th, 2010 @ 05:31 PM

  Hi Yehuda,

  This still needs ActiveRecord requirements in config/application.rb (when calling config.active_record.observers). Perhaps I'm missing something for Rails to know how to get ActiveModel classes observable.

  Cheers.

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  Mike (at coverallcrew) July 23rd, 2010 @ 08:33 PM

  Can we reopen this to take a look. This still seems like an issue.

• 

  Jeremy Kemper October 15th, 2010 @ 11:01 PM

  • Milestone set to “3.0.2”

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