diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/merger.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation/merger.rb | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/relation/merger.rb b/activerecord/lib/active_record/relation/merger.rb index eb23e92fb8..c7f3b88534 100644 --- a/activerecord/lib/active_record/relation/merger.rb +++ b/activerecord/lib/active_record/relation/merger.rb @@ -39,7 +39,7 @@ module ActiveRecord end class Merger # :nodoc: - attr_reader :relation, :values + attr_reader :relation, :values, :other def initialize(relation, other) if other.default_scoped? && other.klass != relation.klass @@ -48,11 +48,12 @@ module ActiveRecord @relation = relation @values = other.values + @other = other end NORMAL_VALUES = Relation::SINGLE_VALUE_METHODS + Relation::MULTI_VALUE_METHODS - - [:where, :order, :bind, :reverse_order, :lock, :create_with, :reordering, :from] # :nodoc: + [:joins, :where, :order, :bind, :reverse_order, :lock, :create_with, :reordering, :from] # :nodoc: def normal_values NORMAL_VALUES @@ -66,12 +67,39 @@ module ActiveRecord merge_multi_values merge_single_values + merge_joins relation end private + def merge_joins + return if values[:joins].blank? + + if other.klass == relation.klass + relation.joins! *values[:joins] + else + joins_dependency, rest = values[:joins].partition do |join| + case join + when Hash, Symbol, Array + true + else + false + end + end + + join_dependency = ActiveRecord::Associations::JoinDependency.new(other.klass, + joins_dependency, + []) + relation.joins! rest + + join_dependency.join_associations.each do |association| + @relation = association.join_relation(relation) + end + end + end + def merge_multi_values relation.where_values = merged_wheres relation.bind_values = merged_binds |