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Class: ActiveRecord::Key::Single

Do not use. This class is for internal use only.
Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
None
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Key
Instance Chain:
self, Key
Inherits: Key
  • ::Object
Defined in: activerecord/lib/active_record/key.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(name) ⇒ Single

[ GitHub ] 

  


# File 'activerecord/lib/active_record/key.rb', line 83



def initialize(name)
  @name = -name.to_s
  @columns = [@name].freeze
end


  







Instance Attribute Details



  

    #composite?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 88



def composite?
  false
end


  







Instance Method Details



  

    #arel_columns(table)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 96



def arel_columns(table)
  table[@name]
end


  








  

    #cast(value, model)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 100



def cast(value, model)
  model.type_for_attribute(@name).cast(value)
end


  








  

    #expects_multiple_ids?(value)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 108



def expects_multiple_ids?(value)
  value.is_a?(Array)
end


  








  

    #inferred_id  
  



  

    
Only composite keys have a single id to infer.

  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 113



def inferred_id
  nil
end


  








  

    #value_of(record)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 104



def value_of(record)
  record._read_attribute(@name)
end


  








  

    #where_clauses(values)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 117



def where_clauses(values)
  [where_hash(values)]
end


  








  

    #where_hash(values)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/key.rb', line 92



def where_hash(values)
  { @name => values }
end