diff options
Diffstat (limited to 'activerecord/lib/active_record/associations/join_dependency')
-rw-r--r-- | activerecord/lib/active_record/associations/join_dependency/join_association.rb | 58 |
1 files changed, 3 insertions, 55 deletions
diff --git a/activerecord/lib/active_record/associations/join_dependency/join_association.rb b/activerecord/lib/active_record/associations/join_dependency/join_association.rb index 97cfec0302..005410d598 100644 --- a/activerecord/lib/active_record/associations/join_dependency/join_association.rb +++ b/activerecord/lib/active_record/associations/join_dependency/join_association.rb @@ -34,34 +34,10 @@ module ActiveRecord table = tables.shift klass = reflection.klass - join_keys = reflection.join_keys - key = join_keys.key - foreign_key = join_keys.foreign_key + join_scope = reflection.join_scope(table, foreign_table, foreign_klass) - constraint = build_constraint(klass, table, key, foreign_table, foreign_key) - - predicate_builder = PredicateBuilder.new(TableMetadata.new(klass, table)) - scope_chain_items = reflection.join_scopes(table, predicate_builder) - klass_scope = reflection.klass_join_scope(table, predicate_builder) - - scope_chain_items.concat [klass_scope].compact - - rel = scope_chain_items.inject(scope_chain_items.shift) do |left, right| - left.merge right - end - - if rel && !rel.arel.constraints.empty? - binds += rel.bound_attributes - constraint = constraint.and rel.arel.constraints - end - - if reflection.type - value = foreign_klass.base_class.name - column = klass.columns_hash[reflection.type.to_s] - - binds << Relation::QueryAttribute.new(column.name, value, klass.type_for_attribute(column.name)) - constraint = constraint.and klass.arel_attribute(reflection.type, table).eq(Arel::Nodes::BindParam.new) - end + binds.concat join_scope.bound_attributes + constraint = join_scope.arel.constraints joins << table.create_join(table, table.create_on(constraint), join_type) @@ -72,34 +48,6 @@ module ActiveRecord JoinInformation.new joins, binds end - # Builds equality condition. - # - # Example: - # - # class Physician < ActiveRecord::Base - # has_many :appointments - # end - # - # If I execute `Physician.joins(:appointments).to_a` then - # klass # => Physician - # table # => #<Arel::Table @name="appointments" ...> - # key # => physician_id - # foreign_table # => #<Arel::Table @name="physicians" ...> - # foreign_key # => id - # - def build_constraint(klass, table, key, foreign_table, foreign_key) - constraint = table[key].eq(foreign_table[foreign_key]) - - if klass.finder_needs_type_condition? - constraint = table.create_and([ - constraint, - klass.send(:type_condition, table) - ]) - end - - constraint - end - def table tables.first end |