的Ruby/Rails/Rspec的 - 的ActiveRecord :: AssociationTypeMismatch：

OK，這是我的RSpec代碼...的Ruby/Rails/Rspec的 - 的ActiveRecord :: AssociationTypeMismatch：

 before(:each) do 
      @attr = { :greeting => "Lorem ipsum", :recipient => @recipient } 
     end 

     it "should redirect to the home page" do 
      puts "spec: @attr = #{@attr}" 
      puts "spec: recipient = #{@attr[:recipient]}" 
      post :create, :card => @attr 
      response.should redirect_to(root_path) 
     end

現在，從這個輸出是：

spec: @attr = {:greeting=>"Lorem ipsum", :recipient=>#<User id: 2, first_name: "Example", last_name: "User", email: "[email protected]", created_at: "2011-12-22 04:01:02", updated_at: "2011-12-22 04:01:02", encrypted_password: "2d1323ad5eb21fb5ae5e87dfa78a63b521c56833189cc049ee2...", salt: "2679fcc29a30e939541cb98cb65d1d508035fea0eff1136037a...", admin: false>} 
spec: recipient = #<User:0xac5d80c>

所以我們可以看到，收件人是一個用戶。

在控制器方面，我們看到有...

def create 
    puts "create: Params = #{params}" 
    @card = current_user.sent_cards.build(params[:card]) 
    if @card.save 
     flash[:success] = "Card created!" 
     redirect_to root_path 
    else 
     render 'pages/home' 
    end 
end

隨着顯示...

create: Params = {"card"=>{"greeting"=>"Lorem ipsum", "recipient"=>"2"}, "controller"=>"cards", "action"=>"create"}

，我看到的錯誤...

1) CardsController POST 'create' success should create a card 
    Failure/Error: post :create, :card => @attr 
    ActiveRecord::AssociationTypeMismatch: 
    User(#90303150) expected, got String(#76171330) 
    # ./app/controllers/cards_controller.rb:7:in `create' 
    # ./spec/controllers/cards_controller_spec.rb:47:in `block (5 levels) in <top (required)>' 
    # ./spec/controllers/cards_controller_spec.rb:44:in `block (4 levels) in <top (required)>'

那麼......用戶對象如何以字符串形式更改爲其id？有任何想法嗎？

來源

2011-12-22 slabounty

您無法將整個對象作爲參數傳遞。如果Rails沒有找到id，那麼如果它帶有一個或者傳遞了對象的字符串表示，那麼它會替換該對象，即#<User:0xac5d80c>。

因此，對於您的情況，您應該將：recipient參數重命名爲：recipient_id。然後

@card = current_user.sent_cards.build(params[:card])

將創建您的卡與關聯的收件人，因爲我們已經在recipient_id傳遞。

來源

2011-12-22 05:17:49 Dipil

謝謝，這有幫助。我改變了我看起來像之前... 前（：每個）做 ATTR = {：問候=> 「Lorem存有」：recipient_id => recipient.id} 結束那是你的意思？這擺脫了我所看到的錯誤，但現在... card = current_user.sent_cards.build（params [：card]）（card，attr和recipient_id應該在前面有「at」標誌）顯示創建的卡中的recipient_id爲零。在構建卡之前，我需要從recipient_id獲取用戶嗎？還有別的嗎？ – slabounty 2011-12-22 06:36:54

想通了。不同的問題。必須使用find_by_id獲取收件人。再次感謝。 – slabounty 2011-12-22 17:34:42

的Ruby/Rails/Rspec的 - 的ActiveRecord :: AssociationTypeMismatch：

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