Ruby on rails 4 Rails-实现一个；例如；功能和体验无限循环

老实说，我甚至不知道从哪里开始解决这个问题，但我已经在我的站点上实现了一个“like”功能，当我查看控制台时，我看到一个非常长的SQL语句

我不会发布我所有的dev.log，因为它太长了，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"]]

然后它只是在10000行上重复sql语句，然后切换到这个错误

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'

我有点困了，我希望有人能指出正确的方向

这是我的代码：

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

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

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

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

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

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

类类似于

我的其他控制器中有相应的“has_many”

迁移：

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

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

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

class

查看：

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

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

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

---

根据上述信息，我认为我能得出的唯一结论是，代码

重定向到：back

正在调用一个动作，该动作将再次调用动作

，就像

，这可能会导致循环

例如，如果您正在调用“like”操作，而该“like”操作正在重定向回“like”操作，它将陷入循环

---

如果要保持在同一页面上，请尝试呈现页面，或者将页面重定向到：一个显式的操作，在该操作中设置变量，然后呈现所需的页面。

这似乎不够数据

like.create（like:params[：like]，chef:chef.first，recipe:@recipe）

这个'like'变量/方法从何而来？它似乎是你的like模型，但你没有设置它。那么你可能没有发布整个代码片段吗？如果你能发布更多信息，它可能对我们有用。你能这样做吗？@BryanOemar HA！很好。你完全正确……“like”不存在，它应该存在比如，改为“创建”。