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Module: Mongoid::Contextual::Queryable

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Included In:
Memory, Mongo, None
Defined in: lib/mongoid/contextual/queryable.rb

Overview

Mixin module which adds methods to ::Mongoid::Criteria that indicate the criteria query result will be an empty set.

Instance Attribute Summary

Instance Attribute Details

#blank? ⇒ true | false (readonly) Also known as: #empty?

Is the enumerable of matching documents empty?

Examples:

Is the context empty?

context.blank?

Returns:

  • (true | false) —

    If the context is empty.

[ GitHub ] 

  


# File 'lib/mongoid/contextual/queryable.rb', line 22



def blank?
  !exists?
end


  








  

    #collection   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 14



attr_reader :collection, :criteria, :klass


  








  

    #collection The collection to query against.(The collection to query against.)   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 14



attr_reader :collection, :criteria, :klass


  








  

    #criteria   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 14



attr_reader :collection, :criteria, :klass


  








  

    #criteria The criteria for the context.(The criteria for the context.)   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 14



attr_reader :collection, :criteria, :klass


  








  

    #empty?   (readonly)
  



  

    

Alias for #blank?.


  



  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 25



alias :empty? :blank?


  








  

    #klass   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 14



attr_reader :collection, :criteria, :klass


  








  

    #klass The klass for the criteria.(The klass for the criteria.)   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/contextual/queryable.rb', line 14



attr_reader :collection, :criteria, :klass