模型是不可用控制器

Question

原來的問題

我想寫使用RSpec和水豚和奇蹟，爲什麼我的坤對象始終是空allthough它在我的控制器設置一些功能測試：

app/controllers/timetrackings_controller.rb：

class TimetrackingsController < ApplicationController 
    include ApplicationHelper 

    before_action :authenticate_user! 
    before_action :set_timetracking, only: [:update, :destroy] 

    # GET /timetrackings 
    def index 
    projects = Project.all_cached.select('id, name, category, number, customer_id').includes(:customer).where(:archived => false).order(:number) 
    gon.projects = group_by_customer(projects).to_h 
    gon.services = Service.all_cached.select('id, name').where(:archived => false).order('LOWER(name)') 
    end 

    ... 

現在我想知道爲什麼這個數據不能呈現在我的視圖（save_and_open_page調試：//<![CDATA[ window.gon={};gon.projects={};gon.services=[]; //]]>），所以我只是試圖讓我的測試文件中坤值：

require 'spec_helper' 

describe 'the timetracking page', :js => true do 

    before :each do 
    switch_to_subdomain('test') 

    @project = FactoryGirl.create(:project) 
    @service = FactoryGirl.create(:service) 

    user = FactoryGirl.create(:user) 
    login_as(user, :scope => :user) 

    visit '/timetracking' 

    save_and_open_page 
    end 


    it 'renders the react component' do 
    expect(page).to have_selector '#timetracking-form' 
    end 

    it 'allows me to create a new timetracking' do 
    within('#timetracking-form') do 
     fill_in 'duration', :with => '2' 

     puts '########' 
     puts Gon.all_variables 
     puts Project.all.to_json 
     puts Service.all.to_json 
     puts '########' 

     find_field('project_id').find("option[value='#{@project.id}']").click 
    end 
    click_button '.ei-icon-check' 
    end 

end 

但產量只是：

######## 
{} 
[{"id":2,"number":"2","name":"project2","description":"Some notes","archived":false,"customer_id":2,"created_at":"2015-11-30T16:05:40.160+01:00","updated_at":"2015-11-30T16:05:40.160+01:00","rate_type":null,"hourly_rate":null,"service_rates":null,"budget_type":null,"budget_rate":null,"category":"A","deadline":null}] 
[{"id":2,"name":"service2","description":"Some notes","archived":false,"created_at":"2015-11-30T16:05:40.173+01:00","updated_at":"2015-11-30T16:05:40.173+01:00","billable":null,"hourly_rate":null}] 
######## 

這就是我的spec_helper.rb：

require 'devise' 

# Setup Capybara 
require 'capybara/rspec' 
require 'capybara/poltergeist' 
Capybara.always_include_port = true 
Capybara.javascript_driver = :poltergeist 

# Use SimpleCov for code coverage 
require 'simplecov' 
require 'simplecov-shield' 
SimpleCov.start 'rails' 
SimpleCov.formatters = [ 
    SimpleCov::Formatter::HTMLFormatter, 
    SimpleCov::Formatter::ShieldFormatter 
] 

# This file is copied to spec/ when you run 'rails generate rspec:install' 
ENV['RAILS_ENV'] ||= 'test' 
require File.expand_path('../../config/environment', __FILE__) 
require 'rspec/rails' 
require 'shoulda-matchers' 

# Requires supporting ruby files with custom matchers and macros, etc, in 
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are 
# run as spec files by default. This means that files in spec/support that end 
# in _spec.rb will both be required and run as specs, causing the specs to be 
# run twice. It is recommended that you do not name files matching this glob to 
# end with _spec.rb. You can configure this pattern with with the --pattern 
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`. 
Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f } 

# Checks for pending migrations before tests are run. 
# If you are not using ActiveRecord, you can remove this line. 
ActiveRecord::Migration.check_pending! if defined?(ActiveRecord::Migration) 

module ControllerMacros 
    def attributes_with_foreign_keys(*args) 
    FactoryGirl.build(*args).attributes.delete_if do |k, v| 
     ['id', 'type', 'foreign_id', 'foreign_type', 'created_at', 'updated_at'].member?(k) 
    end 
    end 
end 

RSpec.configure do |config| 

    config.use_transactional_fixtures = false 
    config.use_instantiated_fixtures = false 
    config.mock_with :rspec 

    # Use FactoryGirl for fixtures 
    config.include FactoryGirl::Syntax::Methods 

    # Auto-detect spec types 
    config.infer_spec_type_from_file_location! 

    # Insert devise helpers in controller specs 
    config.include Devise::TestHelpers, type: :controller 
    config.include Warden::Test::Helpers 
    config.extend ControllerMacros, type: :controller 
    config.include ControllerMacros 


    # Run specs in random order to surface order dependencies. If you find an 
    # order dependency and want to debug it, you can fix the order by providing 
    # the seed, which is printed after each run. 
    #  --seed 1234 
    config.order = 'random' 

    config.before(:suite) do 

    Warden.test_mode! 

    # Clean all tables to start 
    DatabaseCleaner.clean_with :truncation 

    # Use transactions for tests 
    DatabaseCleaner.strategy = :transaction 

    # Truncating doesn't drop schemas, ensure we're clean here, app *may not* exist 
    Apartment::Tenant.drop('test') rescue nil 

    # Create the default tenant for our tests 
    Account.create!(name: 'Test', domain: 'test', email: 'info@example.com') 

    end 

    config.before(:each) do 

    # Start transaction for this test 
    DatabaseCleaner.start 

    # Switch into the default tenant 
    Apartment::Tenant.switch! 'test' 

    # Use Timecop to freeze times on time-critical tests 
    Timecop.return 

    end 

    config.after(:each) do 

    # Reset tentant back to `public` 
    Apartment::Tenant.reset 

    # Rollback transaction 
    DatabaseCleaner.clean 

    end 

end 

更新

OK，我覺得問題不在於此：

使用FactoryGirl創建模型（如FactoryGirl.create(:project)）後，記錄在控制器中不可用。如果我喜歡寫東西

@foo = Project.all.to_json 

在我的控制器，並要顯示在我看來這個數據，我只是得到[]（主叫save_and_open_page後）。

我雖然FactoryGirl.create直接寫數據到數據庫？爲什麼我的控制器方法中沒有可用的數據？

更新2

添加

config.before(:each, :js => true) do 
    DatabaseCleaner.strategy = :truncation 
end 

解決了這個問題，但現在我得到：

Failure/Error: user = FactoryGirl.create(:user) 
    ActiveRecord::RecordNotUnique: 
     PG::UniqueViolation: ERROR: duplicate key value violates unique constraint "index_users_on_lastname" 
     DETAIL: Key (lastname)=(Kautzer) already exists. 
     : INSERT INTO "users" ("email", "initial", "firstname", "lastname", "encrypted_password", "archived", "created_at", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8) RETURNING "id" 

我以爲數據庫每次測試後得到清潔？

更新3

無視，最後一個問題是我的數據庫設置中的一個錯誤。

Answer 1

添加

config.before(:each, :js => true) do 
    DatabaseCleaner.strategy = :truncation 
end 

我spec_helper.rb解決了這個問題:)