Draper Gem resulting in Undefined method error

Question

I have used draper with some success. But currently I'm stuck.

I have two models:

# Foo.rb
class Foo < ActiveRecord::Base
    has_many :bars


# Bar.rb
class Bar < ActiveRecord::Base
    belongs_to :foo

    def self.number_banned
      where(:status => "banned").count
    end

If the class is loaded normally, it works as expected:

f = Foo.find(1)
f.bars.number_banned  # ex. 3

If I use Draper to decorate the objects, it returns an undefined "number_banned" method:

f = Foo.find(1).decorate
f.bars.number_banned  # Undefined method 'number_banned'

To note:

Both Decorators include the delegate_all option
FooDecorator decorates_association :bars

Any Ideas what I'm doing wrong?

Can you show us the decorators code and the full error stack, please? — dgilperez, Feb 16 '15 at 19:49
Shouldn't your second model be `class Bar < ActiveRecord::Base`? — pdoherty926, Feb 16 '15 at 19:58

score 0 · Answer 1 · answered Feb 16 '15 at 20:01

0

Thank you for the comments. I seem to have found a solution.

The FooDecorates method should point to a singular instance of Bar:

 decorates_association :bar

And not:

decorates_association :bars

answered Feb 16 '15 at 20:01

HermannHH

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Draper Gem resulting in Undefined method error

1 Answers1