FactoryGirl creates incomplete model

Question

Assume that I have a city model where:

class city
  field :full_name, type: String # San Francisco, CA, United States
  field :_id, type: String, overwrite: true, default: ->{ full_name }
end

Assume that I have a factory defined in /spec/factories/cities.rb:

FactoryGirl.define do
  factory :city do
    full_name 'San Francisco, CA, United States'
  end
end

Running the following code in one of the specs:

city_attrs = { full_name: 'San Francisco, CA, United States' }
City.create! city_attrs
=> #<City _id: San Francisco, CA, United States, full_name: "San Francisco, CA, United States">

FactoryGirl.create(:city)
=> #<City _id: , full_name: "San Francisco, CA, United States">

How do I fix this without adding the following code to the /spec/factories/cities.rb?

before(:create) do |city, evaluator|
  city.id = city.full_name
end

EDIT the solution is to stop using FactoryGirl and use Fabrication instead as recommended in this answer

in some cases the model will have call back procedures that will alter a lot of it's attributes... i want the `FactoryGirl` create to follow this call backs instead of providing these kind of call backs in the `before(:create)` — a14m, Oct 21 '13 at 12:37
if you are not using `ActiveRecord` could you please at least mention the database adapter you are using? — phoet, Oct 21 '13 at 13:17
did you try calling [apply_defaults](https://github.com/mongoid/mongoid/blob/master/lib/mongoid/fields.rb#L91) ? — phoet, Oct 21 '13 at 16:00

score 1 · Accepted Answer · answered Oct 21 '13 at 18:00

You need to override the initialization of the model used by FactoryGirl:

FactoryGirl.define do
  trait :explicit_initialize do
    initialize_with { new(attributes) }
  end

  factory :city, traits: [:explicit_initialize] do
    full_name 'San Francisco, CA, United States'
  end

end

score 0 · Answer 2 · edited Apr 01 '16 at 15:51

Like explain on documentation, all default define in lambda are lazy. So you need pre_process it :

When defining a default value as a proc, Mongoid will apply the default after all other attributes are set. If you want this to happen before the other attributes, set pre_processed: true.

class city
  field :full_name, type: String # San Francisco, CA, United States
  field :_id, type: String, overwrite: true, pre_processed: true, default: ->{ full_name }
end

FactoryGirl creates incomplete model

2 Answers2

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