FactoryGirl belongs_to association和validates_presence_of失败 - 外键关联，对象不关联

Question

After upgrading from FactoryGirl 2.5.2 to 4.5.0, validations for belongs_to associations fail.

The two model files:

class User < ActiveRecord::Base    
  ...
  has_many :things
  ...
end

class Thing < ActiveRecord::Base
  ...
  belongs_to :user   
  validates_presence_of :user
  ...
end

The factory:

FactoryGirl.define
  factory :thing do
    association :user      
    ...
  end
end

Creating a new thing always fails saying User must be provided . When I step into the code, the problem is that the foreign key is set correctly, but the associated object appears to be nil.

>> user = create(:user)
  ( returns saved "user" object )
>> user.id
1
>> thing = build(:thing, user: user)
  ( returns new "thing" object )
>> thing.valid?
false
>> thing.user_id
1
>> User.find(1).present?
true
>> thing.user
nil

I've tried all sorts of combinations and variations on this. I've tried using after(:build) blocks to set the user and using different FactoryGirl syntax. I've tried just having a plain user instead of the association. But it always comes down to this problem -- there is an associated key, and it is correct, but not an associated object (even though that object exists and is saved).

Environment:

ruby 2.1.5

factory_girl 4.5.0
factory_girl_rails 4.5.0
rails 4.2.0
rspec 3.1.0

Answer 1

You need to define a User factory. If you have done so, please edit your answer to show it.