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Module: Mongoid::Association::Constrainable

Overview

Used for converting foreign key values to the correct type based on the types of ids that the document stores.

Instance Method Summary

Instance Method Details

#convert_polymorphic(object) (private)

[ GitHub ] 

  


# File 'lib/mongoid/association/constrainable.rb', line 34



def convert_polymorphic(object)
  if object.is_a?(Mongoid::Document)
    object._id
  else
    BSON::ObjectId.mongoize(object)
  end
end


  








  

    #convert_to_foreign_key(object)  ⇒ Object 
  



  

    

Convert the supplied object to the appropriate type to set as the foreign key for an association.


  





    

    
Examples:

        


Convert the object.



      
constraint.convert("12345")

  


Parameters:


    
  
  • 
    object
    (Object)
—    
    

    The object to convert.
    

    
  
    • 



Returns:


    
  
  • 
    (Object)
—    
    

    The object cast to the correct type.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/mongoid/association/constrainable.rb', line 20



def convert_to_foreign_key(object)
  return convert_polymorphic(object) if polymorphic?
  field = relation_class.fields["_id"]
  if relation_class.using_object_ids?
    BSON::ObjectId.mongoize(object)
  elsif object.is_a?(::Array)
    object.map!{ |obj| field.mongoize(obj) }
  else
    field.mongoize(object)
  end
end