Module: ActsAsParanoidDag::ModelAdditions

Defined in:
lib/acts_as_paranoid_dag/model_additions.rb

Defined Under Namespace

Modules: DagLinkInstanceMethods

Instance Method Summary collapse

Instance Method Details

This allows you to make your dag paranoid, meaning that connections are not destroyed, but instead a ‘deleted_at’ attribute is set.

In your DagLink model replace

class DagLink < ActiveRecord::Base
  acts_as_dag_links options
end

by

class DagLink < ActiveRecord::Base
  acts_as_dag_links options, paranoid: true
end



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# File 'lib/acts_as_paranoid_dag/model_additions.rb', line 20

def acts_as_dag_links( params )

  # Find out whether the dag link should have the paranoid extension.
  paranoid = params[ :paranoid ]
  params.delete( :paranoid )

  # Call the original acts_as_dag_links method from the acts-as-dag gem.
  super params

  # If the dag links should be paranoid, load the corresponding extensions.
  if paranoid
    acts_as_paranoid
    include DagLinkInstanceMethods

    scope :now, where( "#{table_name}.deleted_at IS NULL" )

    def now_and_in_the_past
      without_paranoid_default_scope
    end

    def in_the_past
      without_paranoid_default_scope.only_deleted
    end

    def at_time( time )
      links = without_paranoid_default_scope
        .where( "created_at <= ?", time )
      links = links.where( :deleted_at => nil ) + links.where( "deleted_at >= ?", time )
      links
    end

  end
  
end