class ActiveRecord::Associations::AssociationReflection
Attributes
association_foreign_key[R]
attribute[R]
macro[R]
owner_class[R]
source[R]
Public Class Methods
new(owner_class, macro, name, options = {})
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 31 def initialize(owner_class, macro, name, options = {}) owner_class.reflect_on_all_associations << self @owner_class = owner_class @macro = macro @options = options @klass_name = options[:class_name] || (collection? && name.camelize.gsub(/s$/, '')) || name.camelize if @klass_name < ActiveRecord::Base @klass = @klass_name @klass_name = @klass_name.name end rescue nil @association_foreign_key = options[:foreign_key] || (macro == :belongs_to && "#{name}_id") || "#{@owner_class.name.underscore}_id" @source = options[:source] || @klass_name.underscore if options[:through] @attribute = name end
Public Instance Methods
collection?()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 102 def collection? [:has_many].include? @macro end
find_inverse()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 86 def find_inverse klass.reflect_on_all_associations.each do |association| next if association.association_foreign_key != @association_foreign_key next if association.klass != @owner_class next if association.attribute == attribute return association if klass == association.owner_class end raise "Association #{@owner_class}.#{attribute} "\ "(foreign_key: #{@association_foreign_key}) "\ "has no inverse in #{@klass_name}" end
inverse()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 77 def inverse @inverse ||= through_association ? through_association.inverse : find_inverse end
inverse_of()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 82 def inverse_of @inverse_of ||= inverse.attribute end
klass()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 98 def klass @klass ||= Object.const_get(@klass_name) end
source_associations()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 66 def source_associations # find all associations that use this association as the source # that is final all associations that are using this association as the source in a # through relationship @source_associations ||= owner_class.reflect_on_all_associations.collect do |sibling| sibling.klass.reflect_on_all_associations.select do |assoc| assoc.source == attribute end end.flatten end
through_association()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 46 def through_association return unless @options[:through] @through_association ||= @owner_class.reflect_on_all_associations.detect do |association| association.attribute == @options[:through] end raise "Through association #{@options[:through]} for "\ "#{@owner_class}.#{attribute} not found." unless @through_association @through_association end
Also aliased as: through_association?
through_associations()
click to toggle source
# File lib/reactive_record/active_record/associations.rb, line 58 def through_associations # find all associations that use the inverse association as the through association # that is find all associations that are using this association in a through relationship @through_associations ||= klass.reflect_on_all_associations.select do |assoc| assoc.through_association && assoc.inverse == self end end