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Contents
# active_record_4.2_ruby_1.9/join_association.rb
module Polyamorous
module JoinAssociationExtensions
include SwappingReflectionClass
def self.included(base)
base.class_eval do
attr_reader :join_type
alias_method_chain :initialize, :polymorphism
alias_method_chain :build_constraint, :polymorphism
end
end
def initialize_with_polymorphism(reflection, children,
polymorphic_class = nil, join_type = Arel::Nodes::InnerJoin)
@join_type = join_type
if polymorphic_class && ::ActiveRecord::Base > polymorphic_class
swapping_reflection_klass(reflection, polymorphic_class) do |reflection|
initialize_without_polymorphism(reflection, children)
self.reflection.options[:polymorphic] = true
end
else
initialize_without_polymorphism(reflection, children)
end
end
# Reference https://github.com/rails/rails/commit/9b15db51b78028bfecdb85595624de4b838adbd1
def ==(other)
base_klass == other.base_klass
end
def build_constraint_with_polymorphism(
klass, table, key, foreign_table, foreign_key
)
if reflection.polymorphic?
build_constraint_without_polymorphism(
klass, table, key, foreign_table, foreign_key
)
.and(foreign_table[reflection.foreign_type].eq(reflection.klass.name))
else
build_constraint_without_polymorphism(
klass, table, key, foreign_table, foreign_key
)
end
end
end
end
Version data entries
11 entries across 11 versions & 4 rubygems