From ccea98389abbf150b886c9f964b1def47f00f237 Mon Sep 17 00:00:00 2001 From: Murray Steele Date: Fri, 1 May 2009 16:01:13 +0100 Subject: Providing support for :inverse_of as an option to associations. You can now add an :inverse_of option to has_one, has_many and belongs_to associations. This is best described with an example: class Man < ActiveRecord::Base has_one :face, :inverse_of => :man end class Face < ActiveRecord::Base belongs_to :man, :inverse_of => :face end m = Man.first f = m.face Without :inverse_of m and f.man would be different instances of the same object (f.man being pulled from the database again). With these new :inverse_of options m and f.man are the same in memory instance. Currently :inverse_of supports has_one and has_many (but not the :through variants) associations. It also supplies inverse support for belongs_to associations where the inverse is a has_one and it's not a polymorphic. Signed-off-by: Murray Steele Signed-off-by: Jeremy Kemper --- activerecord/lib/active_record/associations.rb | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 2115878e32..0952b087d1 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1,4 +1,10 @@ module ActiveRecord + class InverseOfAssociationNotFoundError < ActiveRecordError #:nodoc: + def initialize(reflection) + super("Could not find the inverse association for #{reflection.name} (#{reflection.options[:inverse_of].inspect} in #{reflection.class_name})") + end + end + class HasManyThroughAssociationNotFoundError < ActiveRecordError #:nodoc: def initialize(owner_class_name, reflection) super("Could not find the association #{reflection.options[:through].inspect} in model #{owner_class_name}") @@ -1488,7 +1494,7 @@ module ActiveRecord :finder_sql, :counter_sql, :before_add, :after_add, :before_remove, :after_remove, :extend, :readonly, - :validate + :validate, :inverse_of ] def create_has_many_reflection(association_id, options, &extension) @@ -1502,7 +1508,7 @@ module ActiveRecord @@valid_keys_for_has_one_association = [ :class_name, :foreign_key, :remote, :select, :conditions, :order, :include, :dependent, :counter_cache, :extend, :as, :readonly, - :validate, :primary_key + :validate, :primary_key, :inverse_of ] def create_has_one_reflection(association_id, options) @@ -1521,7 +1527,7 @@ module ActiveRecord @@valid_keys_for_belongs_to_association = [ :class_name, :foreign_key, :foreign_type, :remote, :select, :conditions, :include, :dependent, :counter_cache, :extend, :polymorphic, :readonly, - :validate, :touch + :validate, :touch, :inverse_of ] def create_belongs_to_reflection(association_id, options) -- cgit v1.2.3 From 235775de291787bba6b7bc3c58e791216c3b5090 Mon Sep 17 00:00:00 2001 From: Frederick Cheung Date: Thu, 7 May 2009 01:43:15 +0100 Subject: honour :inverse_of for joins based include Signed-off-by: Michael Koziarski --- activerecord/lib/active_record/associations.rb | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 0952b087d1..2928b0bf83 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1916,21 +1916,27 @@ module ActiveRecord return nil if record.id.to_s != join.parent.record_id(row).to_s or row[join.aliased_primary_key].nil? association = join.instantiate(row) collection.target.push(association) + collection.__send__(:set_inverse_instance, association, record) when :has_one return if record.id.to_s != join.parent.record_id(row).to_s return if record.instance_variable_defined?("@#{join.reflection.name}") association = join.instantiate(row) unless row[join.aliased_primary_key].nil? - record.send("set_#{join.reflection.name}_target", association) + set_target_and_inverse(join, association, record) when :belongs_to return if record.id.to_s != join.parent.record_id(row).to_s or row[join.aliased_primary_key].nil? association = join.instantiate(row) - record.send("set_#{join.reflection.name}_target", association) + set_target_and_inverse(join, association, record) else raise ConfigurationError, "unknown macro: #{join.reflection.macro}" end return association end + def set_target_and_inverse(join, association, record) + association_proxy = record.send("set_#{join.reflection.name}_target", association) + association_proxy.__send__(:set_inverse_instance, association, record) + end + class JoinBase # :nodoc: attr_reader :active_record, :table_joins delegate :table_name, :column_names, :primary_key, :reflections, :sanitize_sql, :to => :active_record -- cgit v1.2.3 From 026b78f9076216990bddb1aa5d83d23a647c02a5 Mon Sep 17 00:00:00 2001 From: Anthony Crumley Date: Mon, 4 May 2009 09:49:43 -0500 Subject: Fixed eager load error on find with include => [:table_name] and hash conditions like {:table_name => {:column => 'value'}} Signed-off-by: Michael Koziarski --- activerecord/lib/active_record/associations.rb | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 2928b0bf83..781a0290e8 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1671,17 +1671,29 @@ module ActiveRecord string.scan(/([\.a-zA-Z_]+).?\./).flatten end + def tables_in_hash(hash) + return [] if hash.blank? + tables = hash.map do |key, value| + if value.is_a?(Hash) + key.to_s + else + tables_in_string(key) if key.is_a?(String) + end + end + tables.flatten.compact + end + def conditions_tables(options) # look in both sets of conditions conditions = [scope(:find, :conditions), options[:conditions]].inject([]) do |all, cond| case cond when nil then all - when Array then all << cond.first - when Hash then all << cond.keys - else all << cond + when Array then all << tables_in_string(cond.first) + when Hash then all << tables_in_hash(cond) + else all << tables_in_string(cond) end end - tables_in_string(conditions.join(' ')) + conditions.flatten end def order_tables(options) -- cgit v1.2.3 From a2875bec9a31702a385d2f34e66843ddbe4e9db2 Mon Sep 17 00:00:00 2001 From: Bryan Helmkamp Date: Mon, 11 May 2009 22:23:47 -0400 Subject: Use DependencyModule for included hooks in ActiveRecord --- activerecord/lib/active_record/associations.rb | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 781a0290e8..e2dd36158f 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -77,6 +77,8 @@ module ActiveRecord # See ActiveRecord::Associations::ClassMethods for documentation. module Associations # :nodoc: + extend ActiveSupport::DependencyModule + # These classes will be loaded when associations are created. # So there is no need to eager load them. autoload :AssociationCollection, 'active_record/associations/association_collection' @@ -89,10 +91,6 @@ module ActiveRecord autoload :HasOneAssociation, 'active_record/associations/has_one_association' autoload :HasOneThroughAssociation, 'active_record/associations/has_one_through_association' - def self.included(base) - base.extend(ClassMethods) - end - # Clears out the association cache def clear_association_cache #:nodoc: self.class.reflect_on_all_associations.to_a.each do |assoc| -- cgit v1.2.3 From e8550ee0329586b32de425e905c7af7e65bc78a8 Mon Sep 17 00:00:00 2001 From: Jeremy Kemper Date: Wed, 13 May 2009 01:10:37 -0700 Subject: Cherry-pick core extensions --- activerecord/lib/active_record/associations.rb | 2 ++ 1 file changed, 2 insertions(+) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index e2dd36158f..c5e4df4950 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1,3 +1,5 @@ +require 'active_support/core_ext/module/delegation' + module ActiveRecord class InverseOfAssociationNotFoundError < ActiveRecordError #:nodoc: def initialize(reflection) -- cgit v1.2.3 From 27de7f150b57a18d4ccdd274f6f8b621b58108c6 Mon Sep 17 00:00:00 2001 From: Benjamin Floering Date: Sun, 17 May 2009 23:35:47 -0700 Subject: Fixed limited eager loading associations with numbers in the name [#2668 state:resolved] Signed-off-by: Pratik Naik --- activerecord/lib/active_record/associations.rb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index c5e4df4950..76726b7845 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1668,7 +1668,7 @@ module ActiveRecord def tables_in_string(string) return [] if string.blank? - string.scan(/([\.a-zA-Z_]+).?\./).flatten + string.scan(/([a-zA-Z_][\.\w]+).?\./).flatten end def tables_in_hash(hash) -- cgit v1.2.3 From 4e50a35fa243f6cf7ad567774a9f7c1cb87a1653 Mon Sep 17 00:00:00 2001 From: Joshua Peek Date: Thu, 28 May 2009 11:35:36 -0500 Subject: Break up DependencyModule's dual function of providing a "depend_on" DSL and "included" block DSL into separate modules. But, unify both approaches under AS::Concern. --- activerecord/lib/active_record/associations.rb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'activerecord/lib/active_record/associations.rb') diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 76726b7845..157716a477 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -79,7 +79,7 @@ module ActiveRecord # See ActiveRecord::Associations::ClassMethods for documentation. module Associations # :nodoc: - extend ActiveSupport::DependencyModule + extend ActiveSupport::Concern # These classes will be loaded when associations are created. # So there is no need to eager load them. -- cgit v1.2.3