Question

老实说，我甚至不知道从哪里开始解决这个问题但是我已经在我的网站上实现了“喜欢”功能，当我在看控制台时，我看到了一个非常真实的长SQL语句。

我不打算发布我的所有dev.log，因为它只是令人难以置信的长，但这里有一些错误的片段。

Started POST "/recipes/1/like?like=true" for 127.0.0.1 at 2015-11-20 22:46:45 -0500
   Processing by RecipesController#like as HTML
     Parameters: {"authenticity_token"=>"b64tIveTCtassgzKoJ/d65c72b3DfLmkC1ddQrCRBsbxnAuKMYpnz8L/+m5SsJ8to57v4sFXSkLIZB9QdFXdTQ==", "like"=>"true", "id"=>"1"}
     ^[[1m^[[35mRecipe Load (0.1ms)^[[0m  SELECT  "recipes".* FROM "recipes" WHERE "recipes"."id" = ? LIMIT 1  [["id", 1]]
     ^[[1m^[[36mCACHE (0.0ms)^[[0m  ^[[1mSELECT  "recipes".* FROM "recipes" WHERE "recipes"."id" = ? LIMIT 1^[[0m  [["id", "1"]]
     ^[[1m^[[35mCACHE (0.0ms)^[[0m  SELECT  "recipes".* FROM "recipes" WHERE "recipes"."id" = ? LIMIT 1  [["id", "1"]]

然后它只重复大约10,000行的sql语句，然后切换到此错误

15008   app/controllers/recipes_controller.rb:46:in `like'
15009   app/controllers/recipes_controller.rb:46:in `like'
15010   app/controllers/recipes_controller.rb:46:in `like'
15011   app/controllers/recipes_controller.rb:46:in `like'
15012   app/controllers/recipes_controller.rb:46:in `like'
15013   app/controllers/recipes_controller.rb:46:in `like'
15014   app/controllers/recipes_controller.rb:46:in `like'
15015   app/controllers/recipes_controller.rb:46:in `like'
15016   app/controllers/recipes_controller.rb:46:in `like'
15017   app/controllers/recipes_controller.rb:46:in `like'

我有点卡住了，我希望有人能指出正确的方向。

这是我的代码：

控制器

def like
  @recipe = Recipe.find(params[:id])
  Like.create(like: params[:like], chef: Chef.first, recipe: @recipe)
  flash[:success] = "Your selection was successful"
  redirect_to :back
end

型号：

class Like < ActiveRecord::Base
  belongs_to :chef
  belongs_to :recipe
end

我在其他控制器中有相应的“has_many”“

迁移：

class CreateLikes < ActiveRecord::Migration
  def change
    create_table :likes do |t| 
      t.boolean :like
      t.integer :chef_id, :recipe_id
      t.timestamps
    end 
  end 
end

查看：

<%= link_to like_recipe_path(@recipe, like: true), method: :post do %>
  <i class="glyphicon glyphicon-thumbs-up"></i>
<% end %>

Answer 1

根据上面的信息，我认为我能得出的唯一结论是代码redirect_to :back正在调用一个动作，它将再次调用动作like，这可能导致循环。

例如，如果您正在调用“喜欢”操作并且“喜欢”操作重定向回“喜欢”操作，则会陷入循环。

尝试渲染页面，如果你想留在同一页面或redirect_to：an_explicit_action你设置你的变量，然后渲染你想要的页面。

Rails - 实现“喜欢”功能并体验无限循环

1 个答案: