write_attribute(attr_name, value)
public
Updates the attribute identified by attr_name with the specified
value. Empty strings for fixnum and float columns are turned into
nil.
# File activerecord/lib/active_record/attribute_methods/write.rb, line 25
def write_attribute(attr_name, value)
attr_name = attr_name.to_s
attr_name = self.class.primary_key if attr_name == 'id' && self.class.primary_key
@attributes_cache.delete(attr_name)
column = column_for_attribute(attr_name)
if column || @attributes.has_key?(attr_name)
@attributes[attr_name] = type_cast_attribute_for_write(column, value)
else
raise ActiveModel::MissingAttributeError, "can't write unknown attribute `#{attr_name}'"
end
end
