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Class: ActiveRecord::Key::None

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Single, Key
Instance Chain:
self, Single, Key
Inherits: ActiveRecord::Key::Single
Defined in: activerecord/lib/active_record/key.rb

Constant Summary

Class Method Summary

Single - Inherited

.new

Instance Attribute Summary

Single - Inherited

#composite?

Instance Method Summary

Single - Inherited

#_value_of, #all?, #any?, #arel_columns, #cast, #each, #each_with_index, #expects_multiple_ids?, #include?,
#inferred_id

Only composite keys have a single id to infer.
#inferred_key, #map, #map_value, #none?, #resolve_aliases, #subset?, #value_of, #where_clauses, #where_hash, #zip

Constructor Details

.new ⇒ None

[ GitHub ] 

  


# File 'activerecord/lib/active_record/key.rb', line 340



def initialize
  @name = nil
  @columns = EMPTY
end


  







Instance Attribute Details



  

    #present?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 345



def present?
  false
end


  







Instance Method Details



  

    #_value_of(record, normalizers = nil)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 378



def _value_of(record, normalizers = nil)
  nil
end


  








  

    #all?  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 363



def all?(...) = EMPTY.all?(...)


  








  

    #any?  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 364



def any?(...) = EMPTY.any?(...)


  








  

    #each(&block)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 358



def each(&block)
  return enum_for(:each) unless block
  self
end


  








  

    #each_with_index  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 367



def each_with_index(&) = EMPTY.each_with_index(&)


  








  

    #include?(column)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 349



def include?(column)
  false
end


  








  

    #map  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 366



def map(...) = EMPTY.map(...)


  








  

    #map_value  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 373



def map_value
  return enum_for(:map_value) unless block_given?
  nil
end


  








  

    #none?  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 365



def none?(...) = EMPTY.none?(...)


  








  

    #subset?(other)  ⇒ Boolean 
  



  

    
The empty set is a subset of every key.

  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 354



def subset?(other)
  true
end


  








  

    #zip(other)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 369



def zip(other, &)
  EMPTY.zip(other.to_a, &)
end