module ActiveRecord module Associations # Helper class module which gets mixed into JoinDependency::JoinAssociation and AssociationScope module JoinHelper #:nodoc: def join_type Arel::InnerJoin end private def construct_tables tables = [] chain.each do |reflection| tables << alias_tracker.aliased_table_for( table_name_for(reflection), table_alias_for(reflection, reflection != self.reflection) ) if reflection.source_macro == :has_and_belongs_to_many tables << alias_tracker.aliased_table_for( (reflection.source_reflection || reflection).options[:join_table], table_alias_for(reflection, true) ) end end tables end def table_name_for(reflection) reflection.table_name end def table_alias_for(reflection, join = false) name = alias_tracker.pluralize(reflection.name, reflection.active_record) name << "_#{alias_suffix}" name << "_join" if join name end def join(table, constraint) table.create_join(table, table.create_on(constraint), join_type) end def sanitize(conditions, table) conditions = conditions.map do |condition| condition = active_record.send(:sanitize_sql, interpolate(condition), table.table_alias || table.name) condition = Arel.sql(condition) unless condition.is_a?(Arel::Node) condition end conditions.length == 1 ? conditions.first : Arel::Nodes::And.new(conditions) end end end end