From e4943e93c2571cba8630eec2e77000300947866b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jos=C3=A9=20Valim?= Date: Thu, 12 Aug 2010 12:04:16 -0300 Subject: Make update_attribute behave as in Rails 2.3 and document the behavior intrinsic to its implementation. --- activerecord/lib/active_record/persistence.rb | 63 +++++++++++++-------------- 1 file changed, 30 insertions(+), 33 deletions(-) (limited to 'activerecord/lib/active_record/persistence.rb') diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb index 71b46beaef..0188972169 100644 --- a/activerecord/lib/active_record/persistence.rb +++ b/activerecord/lib/active_record/persistence.rb @@ -1,7 +1,7 @@ module ActiveRecord # = Active Record Persistence module Persistence - # Returns true if this object hasn't been saved yet -- that is, a record + # Returns true if this object hasn't been saved yet -- that is, a record # for the object doesn't exist in the data store yet; otherwise, returns false. def new_record? @new_record @@ -72,7 +72,7 @@ module ActiveRecord freeze end - # Deletes the record in the database and freezes this instance to reflect + # Deletes the record in the database and freezes this instance to reflect # that no changes should be made (since they can't be persisted). def destroy if persisted? @@ -83,15 +83,15 @@ module ActiveRecord freeze end - # Returns an instance of the specified +klass+ with the attributes of the - # current record. This is mostly useful in relation to single-table - # inheritance structures where you want a subclass to appear as the - # superclass. This can be used along with record identification in - # Action Pack to allow, say, Client < Company to do something + # Returns an instance of the specified +klass+ with the attributes of the + # current record. This is mostly useful in relation to single-table + # inheritance structures where you want a subclass to appear as the + # superclass. This can be used along with record identification in + # Action Pack to allow, say, Client < Company to do something # like render :partial => @client.becomes(Company) to render that # instance using the companies/company partial instead of clients/client. # - # Note: The new instance will share a link to the same attributes as the original class. + # Note: The new instance will share a link to the same attributes as the original class. # So any change to the attributes in either instance will affect the other. def becomes(klass) became = klass.new @@ -102,34 +102,19 @@ module ActiveRecord became end - # Updates a single attribute and saves the record. + # Updates a single attribute and saves the record. # This is especially useful for boolean flags on existing records. Also note that # - # * The attribute being updated must be a column name. # * Validation is skipped. - # * No callbacks are invoked. + # * Callbacks are invoked. # * updated_at/updated_on column is updated if that column is available. - # * Does not work on associations. - # * Does not work on attr_accessor attributes. - # * Does not work on new record. record.new_record? should return false for this method to work. - # * Updates only the attribute that is input to the method. If there are other changed attributes then - # those attributes are left alone. In that case even after this method has done its work record.changed? - # will return true. + # * Updates all the attributes that are dirty in this object. # def update_attribute(name, value) - raise ActiveRecordError, "#{name.to_s} is marked as readonly" if self.class.readonly_attributes.include? name.to_s - - changes = record_update_timestamps || {} - - if name - name = name.to_s - send("#{name}=", value) - changes[name] = read_attribute(name) - end - - @changed_attributes.except!(*changes.keys) - primary_key = self.class.primary_key - self.class.update_all(changes, { primary_key => self[primary_key] }) == 1 + name = name.to_s + raise ActiveRecordError, "#{name} is marked as readonly" if self.class.readonly_attributes.include?(name) + send("#{name}=", value) + save(:validate => false) end # Updates the attributes of the model from the passed-in hash and saves the @@ -220,15 +205,27 @@ module ActiveRecord # Saves the record with the updated_at/on attributes set to the current time. # Please note that no validation is performed and no callbacks are executed. - # If an attribute name is passed, that attribute is updated along with + # If an attribute name is passed, that attribute is updated along with # updated_at/on attributes. # # Examples: # # product.touch # updates updated_at/on # product.touch(:designed_at) # updates the designed_at attribute and updated_at/on - def touch(attribute = nil) - update_attribute(attribute, current_time_from_proper_timezone) + def touch(name = nil) + attributes = timestamp_attributes_for_update_in_model + attributes << name if name + + current_time = current_time_from_proper_timezone + changes = {} + + attributes.each do |column| + changes[column.to_s] = write_attribute(column.to_s, current_time) + end + + @changed_attributes.except!(*changes.keys) + primary_key = self.class.primary_key + self.class.update_all(changes, { primary_key => self[primary_key] }) == 1 end private -- cgit v1.2.3