diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/query_methods.rb')
-rw-r--r-- | activerecord/lib/active_record/relation/query_methods.rb | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 1327cc3c34..d0c56ac3d0 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -100,6 +100,14 @@ module ActiveRecord # firing an additional query. This will often result in a # performance improvement over a simple +join+. # + # You can also specify multiple relationships, like this: + # + # users = User.includes(:address, :friends) + # + # Loading nested relationships is possible using a Hash: + # + # users = User.includes(:address, friends: [:address, :followers]) + # # === conditions # # If you want to add conditions to your included models you'll have @@ -280,16 +288,18 @@ module ActiveRecord args.flatten! validate_order_args args - references = args.reject { |arg| Arel::Node === arg } + references = args.grep(String) references.map! { |arg| arg =~ /^([a-zA-Z]\w*)\.(\w+)/ && $1 }.compact! references!(references) if references.any? # if a symbol is given we prepend the quoted table name - args = args.map { |arg| - arg.is_a?(Symbol) ? "#{quoted_table_name}.#{arg} ASC" : arg + args.map! { |arg| + arg.is_a?(Symbol) ? + Arel::Nodes::Ascending.new(klass.arel_table[arg]) : + arg } - self.order_values = args + self.order_values + self.order_values = args.concat self.order_values self end @@ -946,10 +956,11 @@ module ActiveRecord join_dependency.graft(*stashed_association_joins) - # FIXME: refactor this to build an AST - join_dependency.join_associations.each do |association| - association.join_to(manager) - end + joins = join_dependency.join_associations.map { |association| + association.join_constraints + }.flatten + + joins.each { |join| manager.from join } manager.join_sources.concat join_list |