Rails 5, как решить NoMethodError - неопределенный метод `name 'для nil: NilClass, возникающий только во время минимального тестирования - PullRequest
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Rails 5, как решить NoMethodError - неопределенный метод `name 'для nil: NilClass, возникающий только во время минимального тестирования

0 голосов
/ 11 декабря 2018

Я пытаюсь проверить метод index моего track_controller, и он продолжает возвращать <500 Internal Server Error>.

Трек, созданный пользователем, связан с указанным пользователем.Поэтому @track.user.name должно вернуть имя пользователя.Однако ошибка указывает на то, что user возвращает nil, несмотря на то, что я явно назначаю пользователя, что дает?

Журнал испытаний: 

-------------------------------------------
TracksControllerTest: test_should_get_index
-------------------------------------------
  [1m[36mUser Load (0.3ms)[0m  [1m[34mSELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT ?[0m  [["id", 701806347], ["LIMIT", 1]]
  [1m[36mTrack Load (0.1ms)[0m  [1m[34mSELECT  "tracks".* FROM "tracks" WHERE "tracks"."id" = ? LIMIT ?[0m  [["id", 980190962], ["LIMIT", 1]]
  [1m[35m (0.1ms)[0m  [1m[35mSAVEPOINT active_record_1[0m
  [1m[36mTrack Update (0.3ms)[0m  [1m[33mUPDATE "tracks" SET "user_id" = ?, "updated_at" = ? WHERE "tracks"."id" = ?[0m  [["user_id", 701806347], ["updated_at", "2018-12-11 14:30:49.753966"], ["id", 980190962]]
  [1m[35m (0.1ms)[0m  [1m[35mRELEASE SAVEPOINT active_record_1[0m
Started GET "/" for 127.0.0.1 at 2018-12-11 14:30:49 +0000
Processing by TracksController#index as HTML
  [1m[35m (0.1ms)[0m  [1m[35mSAVEPOINT active_record_1[0m
  [1m[36mCart Create (0.2ms)[0m  [1m[32mINSERT INTO "carts" ("created_at", "updated_at") VALUES (?, ?)[0m  [["created_at", "2018-12-11 14:30:49.856142"], ["updated_at", "2018-12-11 14:30:49.856142"]]
  [1m[35m (0.0ms)[0m  [1m[35mRELEASE SAVEPOINT active_record_1[0m
  Rendering tracks/index.html.haml within layouts/application
  [1m[36mTrack Load (0.2ms)[0m  [1m[34mSELECT "tracks".* FROM "tracks" ORDER BY created_at desc[0m
  Rendered tracks/index.html.haml within layouts/application (23.1ms)
Completed 500 Internal Server Error in 51ms (ActiveRecord: 0.5ms)

NoMethodError - undefined method `name' for nil:NilClass:
  app/views/tracks/index.html.haml:20:in `block in _app_views_tracks_index_html_haml___68907435507065187_70307785248520'
  app/views/tracks/index.html.haml:8:in `_app_views_tracks_index_html_haml___68907435507065187_70307785248520'
  test/controllers/tracks_controller_test.rb:17:in `block in <class:TracksControllerTest>'

track_controller_test.rb: 

require 'test_helper'
include Warden::Test::Helpers
class TracksControllerTest < ActionDispatch::IntegrationTest



  setup do
    @user = users(:cscades)
    login_as(@user)
    @track = tracks(:one) #need to sign in the users in order for tracks to be deleted as only track creators can delete them
    @track.user = @user
    @track.save!

  end

  test "should get index" do
    get root_path # root path == tracks#index
    assert_response :success
  end

track_controller.rb: 

class TracksController < ApplicationController

  skip_before_action :authenticate_user!, raise: false
  before_action :set_track, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!, except: [:index, :show]

  # GET /tracks
  # GET /tracks.json
  def index
    @tracks = Track.all.order("created_at desc")
  end

index.html.haml (для треков) ошибка появляется в строке, указанной ниже: 

- content_for :header do
  %section.hero.is-warning
    .hero-body
      .container
        %h1.title
          Browse the newest Tracks
.track-index-grid.pt4
  - @tracks.each do |track|
    .track.border-light
      .track-thumb
        -unless track.image_url(:thumb).nil?
          =link_to image_tag(track.image_url(:thumb)), track
        - if track.genre
          .condition
            %span.tag.is-dark
              = track.genre
      .pa3
        %h3.fw7.f4.title= link_to track.name, track
        %p.has-text-gray.fw7.pt9
          Sold by #{link_to track.user.name, new_message_path(:recipient => track.user.email), :title => "Send an email to #{track.user.name}"} #ERROR OCCURS HERE
        %p.has-text-grey
          #{track.description}
        %p.f3.fw6.has-text-right.pt2.price= number_to_currency(track.price)
        - if track_artist(track)
          = link_to 'Edit', edit_track_path(track), class: "button is-small"
          = link_to 'Delete', track, method: :delete, data: { confirm: "Are you sure ?" }, class: "button is-small"

users.yml (пользовательские фиксации): 

cscades:
  name: Cscades
  encrypted_password: <%= Devise::Encryptor.digest(User,'password') %>
  email: cscadesbooking@gmail.com
# column: value
#
polocardigan:
  name: PoloCardigan
  encrypted_password: <%= Devise::Encryptor.digest(User,'password') %>
  email: cardiganbooking@gmail.com
# column: value
...