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expanded comment for update_attribute method

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Neeraj Singh 2010-07-20 06:56:20 -04:00 committed by Xavier Noria
parent efdfcf1325
commit 5c137939a7
1 changed files with 9 additions and 2 deletions
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11
activerecord/lib/active_record/persistence.rb
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@ -102,8 +102,15 @@ module ActiveRecord
became
end
# Updates a single attribute and saves the record without going through the normal validation procedure
# or callbacks. This is especially useful for boolean flags on existing records.
# 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.
#
def update_attribute(name, value)
raise ActiveRecordError, "#{name.to_s} is marked as readonly" if self.class.readonly_attributes.include? name.to_s