undefined method `allow_blank' - ShouldaMatchers

Question

I have simple model that looks like this:

class User < ActiveRecord::Base
  belongs_to :administration
  validates :administration, presence: true, allow_blank: true
end

and spec that looks like this:

require 'spec_helper'

describe User, type: :model do
  it { is_expected.to validate_presence_of(:administration).allow_blank }
end

running this spec returns me:

NoMethodError:
       undefined method `allow_blank' for #<Shoulda::Matchers::ActiveModel::ValidatePresenceOfMatcher:0x0000000b7f27a8>

Why?

possible duplicate of [rspec - how to check that allow\_blank exists](http://stackoverflow.com/questions/11413906/rspec-how-to-check-that-allow-blank-exists) — Makoto, Jul 16 '15 at 06:20
I saw that topic. Didn't find solution for my problem there. — Mateusz Urbański, Jul 16 '15 at 06:22

score 0 · Answer 1 · answered Jul 16 '15 at 07:05

0

it { should allow_value("", nil).for(:administration) }

should work.

answered Jul 16 '15 at 07:05

Santanu

you copied it from old answer. Since then there is a new recommended `expect` syntax. – Andrey Deineko Jul 16 '15 at 09:57
You can write, ```subject { user }``` ```expect(subject).to allow_value("", nil).for(:administration)```. But I have some confusion with this ```subject ``` syntax. So I always avoid it. :) – Santanu Jul 16 '15 at 11:16

1 Answers1