diff options
Diffstat (limited to 'activerecord/lib/active_record')
5 files changed, 61 insertions, 29 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb index f17baec722..df78ba6c5a 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb @@ -23,7 +23,7 @@ module ActiveRecord end def sql_type - base.type_to_sql(type.to_sym, limit, precision, scale) rescue type + base.type_to_sql(type.to_sym, limit, precision, scale) end def to_sql diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb index 7b4be67131..d4ffa82b17 100644 --- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb @@ -21,10 +21,6 @@ module ActiveRecord config[:database] = File.expand_path(config[:database], Rails.root) end - unless 'sqlite3' == config[:adapter] - raise ArgumentError, 'adapter name should be "sqlite3"' - end - db = SQLite3::Database.new( config[:database], :results_as_hash => true @@ -195,7 +191,7 @@ module ActiveRecord :decimal => { :name => "decimal" }, :datetime => { :name => "datetime" }, :timestamp => { :name => "datetime" }, - :time => { :name => "time" }, + :time => { :name => "datetime" }, :date => { :name => "date" }, :binary => { :name => "blob" }, :boolean => { :name => "boolean" } @@ -540,7 +536,7 @@ module ActiveRecord :precision => column.precision, :scale => column.scale, :null => column.null) end - @definition.primary_key(primary_key(from)) if primary_key(from) + @definition.primary_key(from_primary_key) if from_primary_key yield @definition if block_given? end diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index 3ce9995031..31d99f0192 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -108,34 +108,57 @@ module ActiveRecord 0 end - # This method is designed to perform select by a single column as direct SQL query - # Returns <tt>Array</tt> with values of the specified column name - # The values has same data type as column. + # Use <tt>pluck</tt> as a shortcut to select a single attribute without + # loading a bunch of records just to grab one attribute you want. + # + # Person.pluck(:name) + # + # instead of + # + # Person.all.map(&:name) + # + # Pluck returns an <tt>Array</tt> of attribute values type-casted to match + # the plucked column name, if it can be deduced. Plucking a SQL fragment + # returns String values by default. # # Examples: # - # Person.pluck(:id) # SELECT people.id FROM people - # Person.uniq.pluck(:role) # SELECT DISTINCT role FROM people - # Person.where(:age => 21).limit(5).pluck(:id) # SELECT people.id FROM people WHERE people.age = 21 LIMIT 5 + # Person.pluck(:id) + # # SELECT people.id FROM people + # # => [1, 2, 3] + # + # Person.uniq.pluck(:role) + # # SELECT DISTINCT role FROM people + # # => ['admin', 'member', 'guest'] + # + # Person.where(:age => 21).limit(5).pluck(:id) + # # SELECT people.id FROM people WHERE people.age = 21 LIMIT 5 + # # => [2, 3] + # + # Person.pluck('DATEDIFF(updated_at, created_at)') + # # SELECT DATEDIFF(updated_at, created_at) FROM people + # # => ['0', '27761', '173'] # def pluck(column_name) - key = column_name.to_s.split('.', 2).last - if column_name.is_a?(Symbol) && column_names.include?(column_name.to_s) column_name = "#{table_name}.#{column_name}" end result = klass.connection.select_all(select(column_name).arel, nil, bind_values) - types = result.column_types.merge klass.column_types - column = types[key] + + key = result.columns.first + column = klass.column_types.fetch(key) { + result.column_types.fetch(key) { + Class.new { def type_cast(v); v; end }.new + } + } result.map do |attributes| - value = klass.initialize_attributes(attributes)[key] - if column - column.type_cast value - else - value - end + raise ArgumentError, "Pluck expects to select just one attribute: #{attributes.inspect}" unless attributes.one? + + value = klass.initialize_attributes(attributes).values.first + + column.type_cast(value) end end diff --git a/activerecord/lib/active_record/session_store.rb b/activerecord/lib/active_record/session_store.rb index ed47a26749..5a256b040b 100644 --- a/activerecord/lib/active_record/session_store.rb +++ b/activerecord/lib/active_record/session_store.rb @@ -201,10 +201,10 @@ module ActiveRecord class << self alias :data_column_name :data_column - + # Use the ActiveRecord::Base.connection by default. attr_writer :connection - + # Use the ActiveRecord::Base.connection_pool by default. attr_writer :connection_pool @@ -218,12 +218,12 @@ module ActiveRecord # Look up a session by id and unmarshal its data if found. def find_by_session_id(session_id) - if record = connection.select_one("SELECT * FROM #{@@table_name} WHERE #{@@session_id_column}=#{connection.quote(session_id)}") + if record = connection.select_one("SELECT * FROM #{@@table_name} WHERE #{@@session_id_column}=#{connection.quote(session_id.to_s)}") new(:session_id => session_id, :marshaled_data => record['data']) end end end - + delegate :connection, :connection=, :connection_pool, :connection_pool=, :to => self attr_reader :session_id, :new_record @@ -241,6 +241,11 @@ module ActiveRecord @new_record = @marshaled_data.nil? end + # Returns true if the record is persisted, i.e. it's not a new record + def persisted? + !@new_record + end + # Lazy-unmarshal session state. def data unless @data @@ -287,7 +292,7 @@ module ActiveRecord connect = connection connect.delete <<-end_sql, 'Destroy session' DELETE FROM #{table_name} - WHERE #{connect.quote_column_name(session_id_column)}=#{connect.quote(session_id)} + WHERE #{connect.quote_column_name(session_id_column)}=#{connect.quote(session_id.to_s)} end_sql end end diff --git a/activerecord/lib/active_record/transactions.rb b/activerecord/lib/active_record/transactions.rb index 64e5640791..30e1035300 100644 --- a/activerecord/lib/active_record/transactions.rb +++ b/activerecord/lib/active_record/transactions.rb @@ -290,7 +290,15 @@ module ActiveRecord status = nil self.class.transaction do add_to_transaction - status = yield + begin + status = yield + rescue ActiveRecord::Rollback + if defined?(@_start_transaction_state) + @_start_transaction_state[:level] = (@_start_transaction_state[:level] || 0) - 1 + end + status = nil + end + raise ActiveRecord::Rollback unless status end status |