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Class: ActiveRecord::Relation::QueryAttribute

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

Class Method Summary

::ActiveModel::Attribute - Inherited

.from_database, .from_user,
.new

This method should not be called directly.
.null, .uninitialized, .with_cast_value

Instance Attribute Summary

::ActiveModel::Attribute - Inherited

#came_from_user?, #changed?, #changed_in_place?, #has_been_read?, #initialized?, #name, #type, #value_before_type_cast,
#assigned?

Alias for ActiveModel::Attribute#original_attribute.
#changed_from_assignment?, #original_attribute

Instance Method Summary

::ActiveModel::Attribute - Inherited

#==, #encode_with,
#eql?

Alias for ActiveModel::Attribute#==.
#forgetting_assignment, #hash, #init_with, #original_value, #original_value_for_database, #serializable?, #type_cast, #value, #value_for_database, #with_cast_value, #with_type, #with_user_default, #with_value_from_database, #with_value_from_user, #_original_value_for_database, #_value_for_database, #initialize_dup

Constructor Details

.new ⇒ QueryAttribute

[ GitHub ] 

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 8



def initialize(...)
  super

  # The query attribute value may be mutated before we actually "compile" the query.
  # To avoid that if the type uses a serializer we eagerly compute the value for database
  if value_before_type_cast.is_a?(StatementCache::Substitute)
    # we don't need to serialize StatementCache::Substitute
  elsif @type.serialized?
    value_for_database
  elsif @type.mutable? # If the type is simply mutable, we deep_dup it.
    @value_before_type_cast = @value_before_type_cast.deep_dup
  end
end


  







Instance Attribute Details



  

    #infinite?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 42



def infinite?
  infinity?(value_before_type_cast) || serializable? && infinity?(value_for_database)
end


  








  

    #nil?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 35



def nil?
  unless value_before_type_cast.is_a?(StatementCache::Substitute)
    value_before_type_cast.nil? ||
      type.respond_to?(:subtype) && serializable? && value_for_database.nil?
  end
end


  








  

    #unboundable?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 46



def unboundable?
  unless defined?(@_unboundable)
    serializable? { |value| @_unboundable = value <=> 0 } && @_unboundable = nil
  end
  @_unboundable
end


  







Instance Method Details



  

    #==(other)  
    Also known as: #eql?
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 53



def ==(other)
  super && value_for_database == other.value_for_database
end


  








  

    #eql?(other)  
  



  

    

Alias for #==.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 56



alias eql? ==


  








  

    #hash  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 58



def hash
  [self.class, name, value_for_database, type].hash
end


  








  

    #infinity?(value)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 63



def infinity?(value)
  value.respond_to?(:infinite?) && value.infinite?
end


  








  

    #type_cast(value)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 22



def type_cast(value)
  value
end


  








  

    #value_for_database  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 26



def value_for_database
  @value_for_database = _value_for_database unless defined?(@value_for_database)
  @value_for_database
end


  








  

    #with_cast_value(value)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/query_attribute.rb', line 31



def with_cast_value(value)
  QueryAttribute.new(name, value, type)
end