Module: ActiveRecord::Reflection

Extended by:
ActiveSupport::Concern
Included in:
Base
Defined in:
lib/active_record/reflection.rb

Overview

Active Record Reflection

Defined Under Namespace

Modules: ClassMethods Classes: AbstractReflection, AggregateReflection, AssociationReflection, BelongsToReflection, HasAndBelongsToManyReflection, HasManyReflection, HasOneReflection, MacroReflection, PolymorphicReflection, RuntimeReflection, ThroughReflection

Class Method Summary collapse

Class Method Details

.add_aggregate_reflection(ar, name, reflection) ⇒ Object 



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# File 'lib/active_record/reflection.rb', line 41

def self.add_aggregate_reflection(ar, name, reflection)
  ar.aggregate_reflections = ar.aggregate_reflections.merge(name.to_s => reflection)
end

.add_reflection(ar, name, reflection) ⇒ Object 



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# File 'lib/active_record/reflection.rb', line 35

def self.add_reflection(ar, name, reflection)
  ar.clear_reflections_cache
  name = name.to_s
  ar._reflections = ar._reflections.except(name).merge!(name => reflection)
end

.create(macro, name, scope, options, ar) ⇒ Object 



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# File 'lib/active_record/reflection.rb', line 16

def self.create(macro, name, scope, options, ar)
  klass = \
    case macro
    when :composed_of
      AggregateReflection
    when :has_many
      HasManyReflection
    when :has_one
      HasOneReflection
    when :belongs_to
      BelongsToReflection
    else
      raise "Unsupported Macro: #{macro}"
    end

  reflection = klass.new(name, scope, options, ar)
  options[:through] ? ThroughReflection.new(reflection) : reflection
end