diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb')
-rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb | 86 |
1 files changed, 75 insertions, 11 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb index c6811a4802..879626b72a 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb @@ -51,9 +51,7 @@ module ActiveRecord # Returns a single value from a record def select_value(arel, name = nil, binds = []) - if result = select_rows(arel, name, binds).first - result.first - end + single_value_from_rows(select_rows(arel, name, binds)) end # Returns an array of the values of the first column in a select: @@ -68,6 +66,18 @@ module ActiveRecord select_all(arel, name, binds).rows end + def query_value(sql, name = nil) # :nodoc: + single_value_from_rows(query(sql, name)) + end + + def query_values(sql, name = nil) # :nodoc: + query(sql, name).map(&:first) + end + + def query(sql, name = nil) # :nodoc: + exec_query(sql, name).rows + end + # Executes the SQL statement in the context of this connection and returns # the raw result from the connection adapter. # Note: depending on your database connector, the result returned by this @@ -296,6 +306,9 @@ module ActiveRecord # Inserts the given fixture into the table. Overridden in adapters that require # something beyond a simple insert (eg. Oracle). + # Most of adapters should implement `insert_fixtures` that leverages bulk SQL insert. + # We keep this method to provide fallback + # for databases like sqlite that do not support bulk inserts. def insert_fixture(fixture, table_name) fixture = fixture.stringify_keys @@ -308,16 +321,52 @@ module ActiveRecord raise Fixture::FixtureError, %(table "#{table_name}" has no column named #{name.inspect}.) end end - key_list = fixture.keys.map { |name| quote_column_name(name) } - value_list = binds.map(&:value_for_database).map do |value| - begin - quote(value) - rescue TypeError - quote(YAML.dump(value)) + + table = Arel::Table.new(table_name) + + values = binds.map do |bind| + value = with_yaml_fallback(bind.value_for_database) + [table[bind.name], value] + end + + manager = Arel::InsertManager.new + manager.into(table) + manager.insert(values) + execute manager.to_sql, "Fixture Insert" + end + + # Inserts a set of fixtures into the table. Overridden in adapters that require + # something beyond a simple insert (eg. Oracle). + def insert_fixtures(fixtures, table_name) + return if fixtures.empty? + + columns = schema_cache.columns_hash(table_name) + + values = fixtures.map do |fixture| + fixture = fixture.stringify_keys + + unknown_columns = fixture.keys - columns.keys + if unknown_columns.any? + raise Fixture::FixtureError, %(table "#{table_name}" has no columns named #{unknown_columns.map(&:inspect).join(', ')}.) + end + + columns.map do |name, column| + if fixture.key?(name) + type = lookup_cast_type_from_column(column) + bind = Relation::QueryAttribute.new(name, fixture[name], type) + with_yaml_fallback(bind.value_for_database) + else + Arel.sql("DEFAULT") + end end end - execute "INSERT INTO #{quote_table_name(table_name)} (#{key_list.join(', ')}) VALUES (#{value_list.join(', ')})", "Fixture Insert" + table = Arel::Table.new(table_name) + manager = Arel::InsertManager.new + manager.into(table) + columns.each_key { |column| manager.columns << table[column] } + manager.values = manager.create_values_list(values) + execute manager.to_sql, "Fixtures Insert" end def empty_insert_statement_value @@ -371,7 +420,11 @@ module ActiveRecord end def last_inserted_id(result) - row = result.rows.first + single_value_from_rows(result.rows) + end + + def single_value_from_rows(rows) + row = rows.first row && row.first end @@ -381,6 +434,17 @@ module ActiveRecord end [relation, binds] end + + # Fixture value is quoted by Arel, however scalar values + # are not quotable. In this case we want to convert + # the column value to YAML. + def with_yaml_fallback(value) + if value.is_a?(Hash) || value.is_a?(Array) + YAML.dump(value) + else + value + end + end end end end |