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adding comments to update_attribute method

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Neeraj Singh
2010-07-27 13:55:00 -04:00
parent f3409dc0a0
commit c9fe3c3bd0
1 changed files with 4 additions and 0 deletions
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4
activerecord/lib/active_record/persistence.rb
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@@ -110,6 +110,10 @@ module ActiveRecord
# * 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.
# * 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