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Module: Mongoid::Equality

Relationships & Source Files
Namespace Children
Modules:
ClassMethods
Extension / Inclusion / Inheritance Descendants
Included In:
Composable, Document, GlobalDiscriminatorKeyAssignment::InvalidFieldHost
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ActiveSupport::Concern
Defined in: lib/mongoid/equality.rb

Overview

This module contains the behavior of Mongoid’s clone/dup of documents.

Instance Method Summary

Instance Method Details

#<=>(other) ⇒ Integer

Default comparison is via the string version of the id.

Examples:

Compare two documents.

person <=> other_person

Parameters:

  • other (Document) —

    The document to compare with.

Returns:

[ GitHub ] 

  


# File 'lib/mongoid/equality.rb', line 18



def <=>(other)
  return super unless other.is_a?(Mongoid::Equality)

  attributes['_id'].to_s <=> other.attributes['_id'].to_s
end


  








  

    #==(other)  ⇒ true | false 
  



  

    

Performs equality checking on the document ids. For more robust equality checking please override this method.


  





    

    
Examples:

        


Compare for equality.



      
document == other

  


Parameters:



Returns:


    
  
  • 
    (true | false)
—    
    

    True if the ids are equal, false if not.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/mongoid/equality.rb', line 33



def ==(other)
  self.class == other.class &&
    attributes['_id'] == other.attributes['_id']
end


  








  

    #eql?(other)  ⇒ true | false 
  



  

    

Delegates to ==. Used when needing checks in hashes.


  





    

    
Examples:

        


Perform equality checking.



      
document.eql?(other)

  


Parameters:



Returns:


    
  
  • 
    (true | false)
—    
    

    True if equal, false if not.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/mongoid/equality.rb', line 46



def eql?(other)
  self == other
end