diff options
Diffstat (limited to 'activerecord')
3 files changed, 54 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index cbb6869e66..b2ad4e600d 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -171,6 +171,12 @@ module ActiveRecord false end + # Does this adapter support database extensions? As of this writing + # only postgresql does. + def supports_extensions? + false + end + # QUOTING ================================================== # Returns a bind substitution value given a +column+ and list of current diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 209553b26e..a2b32bf3e2 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -575,11 +575,30 @@ module ActiveRecord true end + # Returns true. + def supports_extensions? + postgresql_version >= 90200 + end + # Range datatypes weren't introduced until PostgreSQL 9.2 def supports_ranges? postgresql_version >= 90200 end + def enable_extension(name) + exec_query "CREATE EXTENSION IF NOT EXISTS #{name}" + end + + def disable_extension(name) + exec_query "DROP EXTENSION IF EXISTS #{name} CASCADE" + end + + def extension_enabled?(name) + res = exec_query "SELECT EXISTS(SELECT * FROM pg_available_extensions WHERE name = '#{name}' AND installed_version IS NOT NULL)", + 'SCHEMA' + res.column_types['exists'].type_cast res.rows.first.first + end + # Returns the configured supported identifier length supported by PostgreSQL def table_alias_length @table_alias_length ||= query('SHOW max_identifier_length', 'SCHEMA')[0][0].to_i diff --git a/activerecord/test/cases/adapters/postgresql/hstore_test.rb b/activerecord/test/cases/adapters/postgresql/hstore_test.rb index 23bafde17b..9498c829dc 100644 --- a/activerecord/test/cases/adapters/postgresql/hstore_test.rb +++ b/activerecord/test/cases/adapters/postgresql/hstore_test.rb @@ -11,15 +11,16 @@ class PostgresqlHstoreTest < ActiveRecord::TestCase def setup @connection = ActiveRecord::Base.connection - begin - @connection.transaction do - @connection.create_table('hstores') do |t| - t.hstore 'tags', :default => '' - end - end - rescue ActiveRecord::StatementInvalid + unless @connection.extension_enabled?('hstore') + @connection.enable_extension 'hstore' return skip "do not test on PG without hstore" end + + @connection.transaction do + @connection.create_table('hstores') do |t| + t.hstore 'tags', :default => '' + end + end @column = Hstore.columns.find { |c| c.name == 'tags' } end @@ -27,6 +28,27 @@ class PostgresqlHstoreTest < ActiveRecord::TestCase @connection.execute 'drop table if exists hstores' end + def test_hstore_enabled + assert @connection.extension_enabled?('hstore') + end + + def test_disable_hstore + if @connection.extension_enabled?('hstore') + @connection.disable_extension 'hstore' + assert_not @connection.extension_enabled?('hstore') + end + end + + def test_enable_hstore + if @connection.extension_enabled?('hstore') + @connection.disable_extension 'hstore' + end + + assert_not @connection.extension_enabled?('hstore') + @connection.enable_extension 'hstore' + assert @connection.extension_enabled?('hstore') + end + def test_column assert_equal :hstore, @column.type end |