define_attribute_method(attr_name)
Instance Public methods
Declares an attribute that should be prefixed and suffixed by ActiveModel::AttributeMethods.
To use, pass an attribute name (as string or symbol), be sure to declare
define_attribute_method after you define any prefix, suffix or
affix method, or they will not hook in.
class Person
include ActiveModel::AttributeMethods
attr_accessor :name
attribute_method_suffix '_short?'
# Call to define_attribute_method must appear after the
# attribute_method_prefix, attribute_method_suffix or
# attribute_method_affix declares.
define_attribute_method :name
private
def attribute_short?(attr)
send(attr).length < 5
end
end
person = Person.new
person.name = 'Bob'
person.name # => "Bob"
person.name_short? # => true
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