remove HABTM associations

activerecord/lib/active_record/associations.rb

@@ -73,12 +73,6 @@ def initialize(owner, reflection)
     end
   end
 
-  class HasAndBelongsToManyAssociationForeignKeyNeeded < ActiveRecordError #:nodoc:
-    def initialize(reflection)
-      super("Cannot create self referential has_and_belongs_to_many association on '#{reflection.class_name rescue nil}##{reflection.name rescue nil}'. :association_foreign_key cannot be the same as the :foreign_key.")
-    end
-  end
-
   class EagerLoadPolymorphicError < ActiveRecordError #:nodoc:
     def initialize(reflection)
       super("Can not eagerly load the polymorphic association #{reflection.name.inspect}")
@@ -114,7 +108,6 @@ module Associations # :nodoc:
 
     autoload :BelongsToAssociation,            'active_record/associations/belongs_to_association'
     autoload :BelongsToPolymorphicAssociation, 'active_record/associations/belongs_to_polymorphic_association'
-    autoload :HasAndBelongsToManyAssociation,  'active_record/associations/has_and_belongs_to_many_association'
     autoload :HasManyAssociation,              'active_record/associations/has_many_association'
     autoload :HasManyThroughAssociation,       'active_record/associations/has_many_through_association'
     autoload :HasOneAssociation,               'active_record/associations/has_one_association'

activerecord/lib/active_record/associations/association.rb

@@ -13,7 +13,6 @@ module Associations
     #       BelongsToAssociation
     #         BelongsToPolymorphicAssociation
     #     CollectionAssociation
-    #       HasAndBelongsToManyAssociation
     #       HasManyAssociation
     #         HasManyThroughAssociation + ThroughAssociation
     class Association #:nodoc:

activerecord/lib/active_record/associations/builder/association.rb

@@ -8,7 +8,6 @@
 #      - HasOneAssociation
 #    - CollectionAssociation
 #      - HasManyAssociation
-#      - HasAndBelongsToManyAssociation
 
 module ActiveRecord::Associations::Builder
   class Association #:nodoc:

activerecord/lib/active_record/associations/collection_association.rb

@@ -7,7 +7,6 @@ module Associations
     # collections. See the class hierarchy in AssociationProxy.
     #
     #   CollectionAssociation:
-    #     HasAndBelongsToManyAssociation => has_and_belongs_to_many
     #     HasManyAssociation => has_many
     #       HasManyThroughAssociation + ThroughAssociation => has_many :through
     #

activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb

-module ActiveRecord
-  # = Active Record Has And Belongs To Many Association
-  module Associations
-    class HasAndBelongsToManyAssociation < CollectionAssociation #:nodoc:
-      attr_reader :join_table
-
-      def initialize(owner, reflection)
-        @join_table = Arel::Table.new(reflection.join_table)
-        super
-      end
-
-      def insert_record(record, validate = true, raise = false)
-        if record.new_record?
-          if raise
-            record.save!(:validate => validate)
-          else
-            return unless record.save(:validate => validate)
-          end
-        end
-
-        stmt = join_table.compile_insert(
-          join_table[reflection.foreign_key]             => owner.id,
-          join_table[reflection.association_foreign_key] => record.id
-        )
-
-        owner.class.connection.insert stmt
-
-        record
-      end
-
-      private
-
-        def count_records
-          load_target.size
-        end
-
-        def delete_records(records, method)
-          relation  = join_table
-          condition = relation[reflection.foreign_key].eq(owner.id)
-
-          unless records == :all
-            condition = condition.and(
-              relation[reflection.association_foreign_key]
-                .in(records.map { |x| x.id }.compact)
-            )
-          end
-
-          owner.class.connection.delete(relation.where(condition).compile_delete)
-        end
-
-        def invertible_for?(record)
-          false
-        end
-    end
-  end
-end