diff options
Diffstat (limited to 'activerecord/lib/active_record/persistence.rb')
| -rw-r--r-- | activerecord/lib/active_record/persistence.rb | 65 |
1 files changed, 44 insertions, 21 deletions
diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb index 5c744762d9..f53c5f17ef 100644 --- a/activerecord/lib/active_record/persistence.rb +++ b/activerecord/lib/active_record/persistence.rb @@ -36,6 +36,23 @@ module ActiveRecord end end + # Creates an object (or multiple objects) and saves it to the database, + # if validations pass. Raises a RecordInvalid error if validations fail, + # unlike Base#create. + # + # The +attributes+ parameter can be either a Hash or an Array of Hashes. + # These describe which attributes to be created on the object, or + # multiple objects when given an Array of Hashes. + def create!(attributes = nil, &block) + if attributes.is_a?(Array) + attributes.collect { |attr| create!(attr, &block) } + else + object = new(attributes, &block) + object.save! + object + end + end + # Given an attributes hash, +instantiate+ returns a new instance of # the appropriate class. Accepts only keys as strings. # @@ -48,11 +65,7 @@ module ActiveRecord # how this "single-table" inheritance mapping is implemented. def instantiate(attributes, column_types = {}) klass = discriminate_class_for_record(attributes) - - attributes = attributes.each_with_object({}) do |(name, value), h| - type = column_types.fetch(name) { klass.type_for_attribute(name) } - h[name] = Attribute.from_database(value, type) - end + attributes = klass.attributes_builder.build_from_database(attributes, column_types) klass.allocate.init_with('attributes' => attributes, 'new_record' => false) end @@ -96,6 +109,10 @@ module ActiveRecord # validate: false, validations are bypassed altogether. See # ActiveRecord::Validations for more information. # + # By default, #save also sets the +updated_at+/+updated_on+ attributes to + # the current time. However, if you supply <tt>touch: false</tt>, these + # timestamps will not be updated. + # # There's a series of callbacks associated with +save+. If any of the # <tt>before_*</tt> callbacks return +false+ the action is cancelled and # +save+ returns +false+. See ActiveRecord::Callbacks for further @@ -103,21 +120,25 @@ module ActiveRecord # # Attributes marked as readonly are silently ignored if the record is # being updated. - def save(*) - create_or_update + def save(*args) + create_or_update(*args) rescue ActiveRecord::RecordInvalid false end # Saves the model. # - # If the model is new a record gets created in the database, otherwise + # If the model is new, a record gets created in the database, otherwise # the existing record gets updated. # # With <tt>save!</tt> validations always run. If any of them fail # ActiveRecord::RecordInvalid gets raised. See ActiveRecord::Validations # for more information. # + # By default, #save! also sets the +updated_at+/+updated_on+ attributes to + # the current time. However, if you supply <tt>touch: false</tt>, these + # timestamps will not be updated. + # # There's a series of callbacks associated with <tt>save!</tt>. If any of # the <tt>before_*</tt> callbacks return +false+ the action is cancelled # and <tt>save!</tt> raises ActiveRecord::RecordNotSaved. See @@ -125,8 +146,8 @@ module ActiveRecord # # Attributes marked as readonly are silently ignored if the record is # being updated. - def save!(*) - create_or_update || raise(RecordNotSaved) + def save!(*args) + create_or_update(*args) || raise(RecordNotSaved.new(nil, self)) end # Deletes the record in the database and freezes this instance to @@ -136,6 +157,8 @@ module ActiveRecord # The row is simply removed with an SQL +DELETE+ statement on the # record's primary key, and no callbacks are executed. # + # Note that this will also delete records marked as <tt>readonly?</tt>. + # # To enforce the object's +before_destroy+ and +after_destroy+ # callbacks or any <tt>:dependent</tt> association # options, use <tt>#destroy</tt>. @@ -153,7 +176,7 @@ module ActiveRecord # and <tt>destroy</tt> returns +false+. See # ActiveRecord::Callbacks for further details. def destroy - raise ReadOnlyRecord if readonly? + raise ReadOnlyRecord, "#{self.class} is marked as readonly" if readonly? destroy_associations destroy_row if persisted? @destroyed = true @@ -168,7 +191,7 @@ module ActiveRecord # and <tt>destroy!</tt> raises ActiveRecord::RecordNotDestroyed. See # ActiveRecord::Callbacks for further details. def destroy! - destroy || raise(ActiveRecord::RecordNotDestroyed) + destroy || raise(ActiveRecord::RecordNotDestroyed, self) end # Returns an instance of the specified +klass+ with the attributes of the @@ -274,7 +297,8 @@ module ActiveRecord # This method raises an +ActiveRecord::ActiveRecordError+ when called on new # objects, or when at least one of the attributes is marked as readonly. def update_columns(attributes) - raise ActiveRecordError, "cannot update on a new record object" unless persisted? + raise ActiveRecordError, "cannot update a new record" if new_record? + raise ActiveRecordError, "cannot update a destroyed record" if destroyed? attributes.each_key do |key| verify_readonly_attribute(key.to_s) @@ -399,9 +423,8 @@ module ActiveRecord self.class.unscoped { self.class.find(id) } end - @attributes.update(fresh_object.instance_variable_get('@attributes')) - - @column_types = self.class.column_types + @attributes = fresh_object.instance_variable_get('@attributes') + @new_record = false self end @@ -453,7 +476,7 @@ module ActiveRecord changes[self.class.locking_column] = increment_lock if locking_enabled? - changed_attributes.except!(*changes.keys) + clear_attribute_changes(changes.keys) primary_key = self.class.primary_key self.class.unscoped.where(primary_key => self[primary_key]).update_all(changes) == 1 else @@ -474,7 +497,7 @@ module ActiveRecord def relation_for_destroy pk = self.class.primary_key column = self.class.columns_hash[pk] - substitute = self.class.connection.substitute_at(column, 0) + substitute = self.class.connection.substitute_at(column) relation = self.class.unscoped.where( self.class.arel_table[pk].eq(substitute)) @@ -483,9 +506,9 @@ module ActiveRecord relation end - def create_or_update - raise ReadOnlyRecord if readonly? - result = new_record? ? _create_record : _update_record + def create_or_update(*args) + raise ReadOnlyRecord, "#{self.class} is marked as readonly" if readonly? + result = new_record? ? _create_record : _update_record(*args) result != false end |