diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb')
-rw-r--r-- | activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 37d9ef1bf1..273c165084 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -17,7 +17,7 @@ module ActiveRecord # Forward any unused config params to PGconn.connect. [:statement_limit, :encoding, :min_messages, :schema_search_path, :schema_order, :adapter, :pool, :wait_timeout, :template, - :reaping_frequency].each do |key| + :reaping_frequency, :insert_returning].each do |key| conn_params.delete key end conn_params.delete_if { |k,v| v.nil? } @@ -258,6 +258,8 @@ module ActiveRecord # <encoding></tt> call on the connection. # * <tt>:min_messages</tt> - An optional client min messages that is used in a # <tt>SET client_min_messages TO <min_messages></tt> call on the connection. + # * <tt>:insert_returning</tt> - An optional boolean to control the use or <tt>RETURNING</tt> for <tt>INSERT<tt> statements + # defaults to true. # # Any further options are used as connection parameters to libpq. See # http://www.postgresql.org/docs/9.1/static/libpq-connect.html for the @@ -405,6 +407,7 @@ module ActiveRecord initialize_type_map @local_tz = execute('SHOW TIME ZONE', 'SCHEMA').first["TimeZone"] + @use_insert_returning = @config.key?(:insert_returning) ? @config[:insert_returning] : true end # Clears the prepared statements cache. @@ -666,8 +669,11 @@ module ActiveRecord pk = primary_key(table_ref) if table_ref end - if pk + if pk && use_insert_returning? select_value("#{sql} RETURNING #{quote_column_name(pk)}") + elsif pk + super + last_insert_id_value(sequence_name || default_sequence_name(table_ref, pk)) else super end @@ -782,11 +788,27 @@ module ActiveRecord pk = primary_key(table_ref) if table_ref end - sql = "#{sql} RETURNING #{quote_column_name(pk)}" if pk + if pk && use_insert_returning? + sql = "#{sql} RETURNING #{quote_column_name(pk)}" + end [sql, binds] end + def exec_insert(sql, name, binds, pk = nil, sequence_name = nil) + val = exec_query(sql, name, binds) + if !use_insert_returning? && pk + unless sequence_name + table_ref = extract_table_ref_from_insert_sql(sql) + sequence_name = default_sequence_name(table_ref, pk) + return val unless sequence_name + end + last_insert_id_result(sequence_name) + else + val + end + end + # Executes an UPDATE query and returns the number of affected tuples. def update_sql(sql, name = nil) super.cmd_tuples @@ -1027,7 +1049,9 @@ module ActiveRecord # Returns the sequence name for a table's primary key or some other specified key. def default_sequence_name(table_name, pk = nil) #:nodoc: - serial_sequence(table_name, pk || 'id').split('.').last + result = serial_sequence(table_name, pk || 'id') + return nil unless result + result.split('.').last rescue ActiveRecord::StatementInvalid "#{table_name}_#{pk || 'id'}_seq" end @@ -1235,6 +1259,10 @@ module ActiveRecord end end + def use_insert_returning? + @use_insert_returning + end + protected # Returns the version of the connected PostgreSQL server. def postgresql_version @@ -1364,8 +1392,15 @@ module ActiveRecord # Returns the current ID of a table's sequence. def last_insert_id(sequence_name) #:nodoc: - r = exec_query("SELECT currval($1)", 'SQL', [[nil, sequence_name]]) - Integer(r.rows.first.first) + Integer(last_insert_id_value(sequence_name)) + end + + def last_insert_id_value(sequence_name) + last_insert_id_result(sequence_name).rows.first.first + end + + def last_insert_id_result(sequence_name) #:nodoc: + exec_query("SELECT currval($1)", 'SQL', [[nil, sequence_name]]) end # Executes a SELECT query and returns the results, performing any data type |