diff options
Diffstat (limited to 'activerecord/lib/active_record/persistence.rb')
| -rw-r--r-- | activerecord/lib/active_record/persistence.rb | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb index b587abd5d0..38b91652ee 100644 --- a/activerecord/lib/active_record/persistence.rb +++ b/activerecord/lib/active_record/persistence.rb @@ -105,11 +105,16 @@ module ActiveRecord # Updates a single attribute and saves the record. # This is especially useful for boolean flags on existing records. Also note that # - # * validation is skipped - # * No 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. The attribute that is being updated must be column name. + # * The attribute being updated must be a column name. + # * Validation is skipped. + # * No 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. <tt>record.new_record?</tt> 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 <tt>record.changed?</tt> + # will return true. # def update_attribute(name, value) raise ActiveRecordError, "#{name.to_s} is marked as readonly" if self.class.readonly_attributes.include? name.to_s |