Module: Mongoid::Mirrored::MirrorMethods

Included in:
ClassMethods
Defined in:
lib/mongoid-mirrored/mirror/mirror_methods.rb

Instance Method Summary collapse

Instance Method Details

#define_after_create_callback ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 30

def define_after_create_callback
  unless mirror_klass.instance_methods.include?(:_create_root)
    mirror_klass.class_eval <<-EOF
      after_create  :_create_root
    EOF
  end

  # Comment.collection.insert(attributes.merge(:post_id => post.id))
  mirror_klass.class_eval <<-EOF
    def _create_root
      mirror_attributes[:root][:klass].collection.insert(attributes.merge(mirror_attributes[:embedding][:id] => eval(mirror_attributes[:embedding][:instance]).id))
    end
  EOF
end

#define_after_create_siblings ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 75

def define_after_create_siblings
  unless mirror_klass.instance_methods.include?(:_create_siblings)
    mirror_klass.class_eval <<-EOF
      after_create  :_create_siblings
    EOF
  end
  
  mirror_klass.class_eval <<-EOF
    def _create_siblings
      mirror_attributes[:embedding][:models].each do |sibling|
        _sibling = sibling.to_s
        next if sibling == mirror_attributes[:embedding][:sym]
        sibling_klass = sibling.to_s.classify.constantize
        if self[_sibling+"_id"]
          sibling_klass.collection.update(
            { :_id => self[_sibling+"_id"] }, 
            '$push' => { 
              mirror_attributes[:root][:association] => attributes.merge(mirror_attributes[:embedding][:id] => eval(mirror_attributes[:embedding][:instance]).id)
             }
          )
        end
      end
    end
  EOF
end

#define_after_destroy_callback ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 60

def define_after_destroy_callback
  unless mirror_klass.instance_methods.include?(:_destroy_root)
    mirror_klass.class_eval <<-EOF
      after_destroy  :_destroy_root
    EOF
  end

  # Comment.collection.remove({ :id => id}, '$set' => attributes)
  mirror_klass.class_eval <<-EOF
     def _destroy_root
       #{@root_klass}.collection.remove({ :_id => id })
     end
   EOF
end

#define_after_destroy_siblings ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 125

def define_after_destroy_siblings
  unless mirror_klass.instance_methods.include?(:_destroy_siblings)
    mirror_klass.class_eval <<-EOF
      after_destroy  :_destroy_siblings
    EOF
  end
  mirror_klass.class_eval <<-EOF
    def _destroy_siblings
      mirror_attributes[:embedding][:models].each do |sibling|
        _sibling = sibling.to_s
        next if sibling == mirror_attributes[:embedding][:sym]
        sibling_klass = sibling.to_s.classify.constantize
        if self[_sibling+"_id"]
          sibling_klass.collection.update({ :_id => self[_sibling+"_id"] }, '$pull' => { mirror_attributes[:root][:association] => { :_id => id}})
        end
      end
    end
  EOF
end

#define_after_update_callback ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 45

def define_after_update_callback
  unless mirror_klass.instance_methods.include?(:_update_root)
    mirror_klass.class_eval <<-EOF
      after_update  :_update_root
    EOF
  end
  
  # Comment.collection.update({ :_id => id}, '$set' => attributes.except('_id'))
  mirror_klass.class_eval <<-EOF
     def _update_root
       #{@root_klass}.collection.update({ :_id => id }, '$set' => attributes.except('_id'))
     end
   EOF
end

#define_after_update_siblings ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 101

def define_after_update_siblings
  unless mirror_klass.instance_methods.include?(:_update_siblings)
    mirror_klass.class_eval <<-EOF
      after_update  :_update_siblings
    EOF
  end
  mirror_klass.class_eval <<-EOF
    def _update_siblings
      #{embedding_models[:all]}.each do |sibling|
        _sibling = sibling.to_s
        next if sibling == mirror_attributes[:embedding][:sym]
        sibling_klass = sibling.to_s.classify.constantize
        if self[_sibling+"_id"]
          nested_attr = {}
          attributes.except(mirror_attributes[:embedding][:id]).each_pair do |k,v|
            nested_attr[mirror_attributes[:root][:association].to_s + ".$." + k] = v
          end
          sibling_klass.collection.update({mirror_attributes[:root][:association].to_s+"._id" => id}, '$set' => nested_attr )
        end
      end
    end
  EOF
end

#define_mirror_attributes ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 5

def define_mirror_attributes
  mirror_klass.class_eval <<-EOF
    cattr_accessor :mirror_attributes
    self.mirror_attributes = {
                              :root => {:association => :#{root_association}, :klass => #{self}},
                              :embedding => {
                                             :sym => :#{embedding_models[:current]}, 
                                             :id => :#{embedding_models[:current]}_id,
                                             :instance => "#{embedding_models[:current]}",
                                             :klass => #{symbol_to_class(embedding_models[:current])},
                                             :models => #{embedding_models[:all]}
                                             }
                              }
    EOF
end

#define_mirror_callbacks ⇒ Object

Define callbacks for mirror class that don’t trigger callbacks on the root class



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 146

def define_mirror_callbacks
  if [:both, :from_mirror].include?(embedding_options[:sync_direction])
    if embedding_options[:sync_events].include?(:create) || embedding_options[:sync_events] == [:all]
      define_after_create_callback
      if embedding_options[:replicate_to_siblings] && embedding_models[:all].size > 1
        define_after_create_siblings
      end
    end
    
    if embedding_options[:sync_events].include?(:update) || embedding_options[:sync_events] == [:all]
      define_after_update_callback
      if embedding_options[:replicate_to_siblings] && embedding_models[:all].size > 1
        define_after_update_siblings
      end
    end
    
    if embedding_options[:sync_events].include?(:destroy) || embedding_options[:sync_events] == [:all]
      define_after_destroy_callback
      if embedding_options[:replicate_to_siblings] && embedding_models[:all].size > 1
        define_after_destroy_siblings
      end
    end
  end
end

#embeds_mirror ⇒ Object 



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# File 'lib/mongoid-mirrored/mirror/mirror_methods.rb', line 21

def embeds_mirror
  # mongoid macro embedded_in
  # eg: embedded_in :post, :inverse_of => :comments
  
  mirror_klass.class_eval <<-EOT
    embedded_in mirror_attributes[:embedding][:sym], :inverse_of => mirror_attributes[:root][:association]
  EOT
end