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Class: ActiveRecord::PredicateBuilder::ComparisonAttribute

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::Arel::Attributes::Attribute, ::Struct
Instance Chain:
self, ::Arel::Attributes::Attribute, ::Arel::Math, ::Arel::OrderPredications, ::Arel::AliasPredication, ::Arel::Predications, ::Arel::Expressions, ::Struct
Inherits: Arel::Attributes::Attribute
Defined in: activerecord/lib/active_record/relation/predicate_builder/comparison.rb

Class Method Summary

Instance Attribute Summary

::Arel::Attributes::Attribute - Inherited

#able_to_type_cast?, #name, #relation

Instance Method Summary

::Arel::Attributes::Attribute - Inherited

#fetch_attribute,
#lower

Create a node for lowering this attribute.
#type_cast_for_database, #type_caster

::Arel::Math - Included

#&, #*, #+, #-, #/, #<<, #>>, #^, #|, #~@

::Arel::OrderPredications - Included

#asc, #desc

::Arel::AliasPredication - Included

#as

::Arel::Predications - Included

#between, #case_insensitive_eq, #case_sensitive_eq, #concat, #contains, #does_not_match, #does_not_match_all, #does_not_match_any, #does_not_match_regexp, #eq, #eq_all, #eq_any, #gt, #gt_all, #gt_any, #gteq, #gteq_all, #gteq_any, #in, #in_all, #in_any, #is_distinct_from, #is_not_distinct_from, #lt, #lt_all, #lt_any, #lteq, #lteq_all, #lteq_any, #matches, #matches_all, #matches_any, #matches_regexp, #not_between, #not_eq, #not_eq_all, #not_eq_any, #not_in, #not_in_all, #not_in_any, #overlaps, #quoted_array, #when, #grouping_all, #grouping_any, #infinity?, #open_ended?, #quoted_node, #unboundable?

::Arel::Expressions - Included

#average, #count, #extract, #maximum, #minimum, #sum

::Struct - Inherited

#as_json

Constructor Details

.new(attribute, type_caster) ⇒ ComparisonAttribute

[ GitHub ] 

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 11



def initialize(attribute, type_caster)
  super(attribute.relation, attribute.name)
  @attribute = attribute
  @type_caster = type_caster
  @expression = comparison_expression(attribute)
end


  







Instance Attribute Details



  

    #attribute   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 9



attr_reader :attribute, :expression, :type_caster


  








  

    #expression   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 9



attr_reader :attribute, :expression, :type_caster


  








  

    #type_cast_for_database   (readonly)
  

  [ GitHub ]


  

  


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



delegate :able_to_type_cast?, :type_cast_for_database, to: :attribute


  








  

    #type_caster   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 9



attr_reader :attribute, :expression, :type_caster


  







Instance Method Details



  

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

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 32



def ==(other)
  self.class == other.class &&
    attribute == other.attribute &&
    expression == other.expression
end


  








  

    #able_to_type_cast?  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


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



delegate :able_to_type_cast?, :type_cast_for_database, to: :attribute


  








  

    #comparison_expression(expression)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 18



def comparison_expression(expression)
  type_caster.comparison_expression(expression)
end


  








  

    #eql?(other)  
  



  

    
Alias for #==.

  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 37



alias eql? ==


  








  

    #fetch_attribute  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 24



def fetch_attribute(&)
  attribute.fetch_attribute(&)
end


  








  

    #hash  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/predicate_builder/comparison.rb', line 28



def hash
  [self.class, attribute, expression].hash
end