Ruby-on-rails – How to make factory girl create a date

factory-botrspecruby-on-railsruby-on-rails-4

Updated
I'm trying to get Factory Girl to fill my "Release Date" field with a date, a random date, frankly any date right now because I keep getting " Validation failed: Release date can't be blank" errors when I run my item_pages_spec.rb

After some help below, his is what I have in my factories.rb for item pages but I've tried a lot of different things now.

  factory :item do
    sequence(:name)  { |n| "Item #{n}" }
    release_date { rand(1..100).days.from_now }
  end

Ideally it would be a line that creates different random dates for each factory made instance of an item.

The release date can't be blank because I have validates :release_date, presence: true in my item model. Ideally I'd have a validation there that makes sure any date supplied IS a date but also accepts NIL because I won't always have a date available.

Any help much appreciated. I couldn't find anything specific online about factory girl and dates.

Model

class Item < ActiveRecord::Base
validates :name, presence: true, length: { maximum: 50 }
validates :release_date, presence: true

end

Item_pages_spec.rb

    require 'spec_helper'

describe "Item pages" do

  subject { page }

 describe "Item page" do
   let(:item) { FactoryGirl.create(:item) }
   before { visit item_path(item) }

   it { should have_content(item.name) }
   it { should have_title(item.name) }
 end
end

Best Answer

The Faker gem has a very nice method for this:

Faker::Date.between(2.days.ago, Date.today)

Related Solutions

Ruby-on-rails – How to get a random number in Ruby

Use rand(range)

From Ruby Random Numbers:

If you needed a random integer to simulate a roll of a six-sided die, you'd use: 1 + rand(6). A roll in craps could be simulated with 2 + rand(6) + rand(6).

Finally, if you just need a random float, just call rand with no arguments.

As Marc-André Lafortune mentions in his answer below (go upvote it), Ruby 1.9.2 has its own Random class (that Marc-André himself helped to debug, hence the 1.9.2 target for that feature).

For instance, in this game where you need to guess 10 numbers, you can initialize them with:

10.times.map{ 20 + Random.rand(11) } 
#=> [26, 26, 22, 20, 30, 26, 23, 23, 25, 22]

Note:

Using Random.new.rand(20..30) (using Random.new) generally would not be a good idea, as explained in detail (again) by Marc-André Lafortune, in his answer (again).
But if you don't use Random.new, then the class method rand only takes a max value, not a Range, as banister (energetically) points out in the comment (and as documented in the docs for Random). Only the instance method can take a Range, as illustrated by generate a random number with 7 digits.

This is why the equivalent of Random.new.rand(20..30) would be 20 + Random.rand(11), since Random.rand(int) returns “a random integer greater than or equal to zero and less than the argument.” 20..30 includes 30, I need to come up with a random number between 0 and 11, excluding 11.

Ruby-on-rails – How to create has_and_belongs_to_many associations in Factory girl

Here is the solution that works for me.

FactoryGirl.define do

  factory :company do
    #company attributes
  end

  factory :user do
   companies {[FactoryGirl.create(:company)]}
   #user attributes
  end

end

if you will need specific company you can use factory this way

company = FactoryGirl.create(:company, #{company attributes})
user = FactoryGirl.create(:user, :companies => [company])

Hope this will be helpful for somebody.

Best Answer

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Ruby-on-rails – How to get a random number in Ruby

Ruby-on-rails – How to create has_and_belongs_to_many associations in Factory girl

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