为什么当我在respond_to块中使用redirect_to时，Rails 4渲染了我的视图

因此在respond_to块中，条件if stockUpdated and stock != {}失败，并且else块运行失败（我已使用byebug测试过）。所以服务器应该重定向，而是呈现。另一件奇怪的事情是，由于它的渲染flash.now[:alert] -'...'应该工作，但也不会显示在视图中（请记住我的话）。为什么当我在respond_to块中使用redirect_to时，Rails 4渲染了我的视图

控制器：

respond_to do |format| 
     if stockUpdated and stock != {} 
      format.js 
      format.html { 
       redirect_to user_path(@user), 
       notice: "#{stock.symbol} has been added to your portfolio!" 
      } 
     else 
      flash.now[:alert] = "We could not add that stock to your portfolio." 
      format.html{redirect_to user_path(@user)} 
     end 
    end

服务器：

Started GET "https://stackoverflow.com/users/1" for ::1 at 2017-01-13 11:48:21 -0500 
Processing by UsersController#show as HTML 
Parameters: {"id"=>"1"} 
User Load (1.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]] 
User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]] 
Stock Load (0.5ms) SELECT "stocks".* FROM "stocks" INNER JOIN "assets" ON "stocks"."id" = "assets"."stock_id" WHERE "assets"."user_id" = $1 [["user_id", 1]] 
Rendered stocks/_stock.html.erb (0.5ms) 
Rendered users/show.html.erb within layouts/application (13.7ms) 
Completed 200 OK in 92ms (Views: 81.6ms | ActiveRecord: 2.0ms)

来源

2017-01-13 Michael Gabay

只是为了澄清：'user_path（@user）''是/用户/ 1'？如果是的话，那么你的服务器日志显示该路线（重定向的路线）。 – mrlew

您应该在重定向之后添加and return：

respond_to do |format| 
    if stockUpdated and stock != {} 
    format.js 
    format.html { 
     redirect_to user_path(@user), notice: "#{stock.symbol} has been added to your portfolio!" 
    } 
    else 
    format.html{ 
     redirect_to user_path(@user), flash: {alert: "We could not add that stock to your portfolio."} and return 
    } 
    end 
end

来源

2017-01-13 18:28:38 mysmallidea

工作正常！但是，为什么不'flash.now'工作？ –

为什么当我在respond_to块中使用redirect_to时，Rails 4渲染了我的视图

回答

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