diff options
-rw-r--r-- | lib/arel/select_manager.rb | 4 | ||||
-rw-r--r-- | lib/arel/table.rb | 4 | ||||
-rw-r--r-- | test/test_select_manager.rb | 22 | ||||
-rw-r--r-- | test/test_table.rb | 14 |
4 files changed, 44 insertions, 0 deletions
diff --git a/lib/arel/select_manager.rb b/lib/arel/select_manager.rb index bb7b1f5b66..f1dde6403a 100644 --- a/lib/arel/select_manager.rb +++ b/lib/arel/select_manager.rb @@ -114,6 +114,10 @@ module Arel self end + def outer_join relation + join(relation, Nodes::OuterJoin) + end + def having *exprs @ctx.having = Nodes::Having.new(collapse(exprs, @ctx.having)) self diff --git a/lib/arel/table.rb b/lib/arel/table.rb index 16ae83c284..3866637bd2 100644 --- a/lib/arel/table.rb +++ b/lib/arel/table.rb @@ -64,6 +64,10 @@ primary_key (#{caller.first}) is deprecated and will be removed in Arel 4.0.0 from(self).join(relation, klass) end + def outer_join relation + join(relation, Nodes::OuterJoin) + end + def group *columns from(self).group(*columns) end diff --git a/test/test_select_manager.rb b/test/test_select_manager.rb index 611bba10c2..09608ea71e 100644 --- a/test/test_select_manager.rb +++ b/test/test_select_manager.rb @@ -579,6 +579,28 @@ module Arel end end + describe 'outer join' do + it 'responds to join' do + left = Table.new :users + right = left.alias + predicate = left[:id].eq(right[:id]) + manager = Arel::SelectManager.new Table.engine + + manager.from left + manager.outer_join(right).on(predicate) + manager.to_sql.must_be_like %{ + SELECT FROM "users" + LEFT OUTER JOIN "users" "users_2" + ON "users"."id" = "users_2"."id" + } + end + + it 'noops on nil' do + manager = Arel::SelectManager.new Table.engine + manager.outer_join(nil).must_equal manager + end + end + describe 'joins' do it 'returns join sql' do table = Table.new :users diff --git a/test/test_table.rb b/test/test_table.rb index b4c2a65fcd..286ad10167 100644 --- a/test/test_table.rb +++ b/test/test_table.rb @@ -96,6 +96,20 @@ module Arel } end end + + describe 'join' do + it 'creates an outer join' do + right = @relation.alias + predicate = @relation[:id].eq(right[:id]) + mgr = @relation.outer_join(right).on(predicate) + + mgr.to_sql.must_be_like %{ + SELECT FROM "users" + LEFT OUTER JOIN "users" "users_2" + ON "users"."id" = "users_2"."id" + } + end + end end describe 'group' do |