在 user#show 中显示最喜欢的食谱列表

Question

我还在写我的食谱app/site。我已经解决了我遇到的一些主要问题。我现在正在深入研究该应用程序。

现在我已经建立并运行了最喜欢的操作。我可以随意喜欢和不喜欢的食谱。但是，如果您愿意，我现在正在尝试创建和索引用户喜欢的所有不同食谱。我希望这个最喜欢的食谱列表显示在 users#show 页面上，这样他们就可以 log-in 并转到他们的个人资料来查看他们最喜欢的食谱。但是，我完全不知道该怎么做。我整天都在想办法弄明白，我以为我明白了，但没有。它显示所有食谱，而不仅仅是最喜欢的食谱。所以我终于崩溃了，决定把它带给天才们（你们！）

我将为您提供一大堆代码，不确定是否对您有帮助，但希望您能够快速破译它。

如果我还没有说清楚的话，我的目标是让最喜欢的食谱作为列表列在用户#show 页面上。

收藏夹控制器：

class FavoritesController < ApplicationController
  def create
    recipe = Recipe.find(params[:recipe_id])
    @recipe = Recipe.find(params[:recipe_id])
    favorite = current_user.favorites.build(recipe: recipe)
    authorize favorite
    if favorite.save
      flash[:notice] = "Your favorite was saved."
      redirect_to @recipe
    else
      flash[:error] = "There was an error saving your favorite."
      redirect_to @recipe
    end
  end

  def destroy
    recipe = Recipe.find(params[:recipe_id])
    @recipe = Recipe.find(params[:recipe_id])
    favorite = Favorite.find(params[:id])
     authorize favorite
    if favorite.destroy
      flash[:notice] = "Favorite successfully deleted!"
      redirect_to favorite.recipe
    else
      flash[:error] = "There was a error in deleting your favorite."
      redirect_to @recipe
    end

  end
end

用户控制器：

class UsersController < ApplicationController

  def show
    @user = User.find(params[:id])
    @recipes = Recipe.where(@favorited)
    @favorites = current_user.favorites
    @comments = current_user.comments
  end

  private

  def user_params
    params.require(:user).permit(:name, :email)
  end

end

配方控制器：

class RecipesController < ApplicationController
  def index
    if params[:category].present?
      @recipes = Recipe.where(category: params[:category])
    else
      @recipes = Recipe.all
    end
  end

  def show
     @recipe = Recipe.find(params[:id])
     @comments = @recipe.comments
     @comment = Comment.new
  end

  def new
    @recipe = Recipe.new
  end

  def edit
    @recipe = Recipe.find(params[:id])
    authorize @recipe
  end

  def update
    @recipe = Recipe.find(params[:id])
    authorize @recipe
    if @recipe.update_attributes(recipe_params)
      flash[:notice] = "Recipe was updated."
      redirect_to @recipe
    else
      flash[:error] = "There was an error saving the post. Please try again."
      render :edit
    end
  end


  def create
    @recipe = Recipe.new(recipe_params)
    authorize @recipe
    if @recipe.save
      flash[:notice] = "Recipe was saved."
      redirect_to @recipe
    else
      flash[:error] = "There was an error saving the post. Please try again."
      render :new
    end
  end

  private

  def recipe_params
    params.require(:recipe).permit(:title, :body, :category, :ingredient, :foodphoto, :recipecard)
  end


end

用户模型：

class User < ActiveRecord::Base
  has_many :comments
  has_many :favorites, dependent: :destroy

  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable, :confirmable

  def admin?
    role == 'admin'
  end

  def favorited(recipe)
    favorites.where(recipe_id: recipe.id).first
  end


end

配方模型：

class Recipe < ActiveRecord::Base
  has_many :comments
  has_many :favorites, dependent: :destroy
  mount_uploader :foodphoto, FoodPhotoUploader
  mount_uploader :recipecard, RecipeCardUploader
end

最喜欢的模特：

class Favorite < ActiveRecord::Base
  belongs_to :recipe
  belongs_to :user
end

部分收藏夹：

<% if policy(Favorite.new).create? %>
  <div class="favorite">
    <% if favorite = current_user.favorited(recipe) %>
      <%= link_to [recipe, favorite], class: 'btn btn-danger', method: :delete do %>
        <i class="glyphicon glyphicon-star-empty"> </i>&nbsp; Unfavorite
        <% end %>
    <% else %>
      <%= link_to [@recipe, Favorite.new], class: 'btn btn-primary', method: :recipe do %>
        <i class="glyphicon glyphicon-star"> </i>&nbsp; Favorite
      <% end %>
    <% end %>
  </div>
<% end %>

用户#show 页面：

<h1>User#show</h1>
<h2>Favorite Recipes</h2>
<% @recipes.each do |recipe| %>
  <p><%= recipe.title %></p>
<% end %>

Routes.rb:

Rails.application.routes.draw do


  devise_for :users
  resources :users, only: :show
  get 'comments/index'

  get 'comments/create'

  get 'comments/show'

  get 'comments/edit'

  get 'comments/new'

  resources :recipes do
    resources :comments, only: [:create, :show, :index, :new, :destroy]
    resources :favorites, only: [:create, :destroy]
  end

  get 'drinks' => 'recipes#index', :category => "drinks"
  get 'entrees' => 'recipes#index', :category => "entrees"
  get 'sides' => 'recipes#index', :category => "sides"
  get 'desserts' => 'recipes#index', :category => "desserts"
  get 'appetizers' => 'recipes#index', :category => "appetizers"


  get 'about' => 'welcome#about'

  root to: 'welcome#index'

end

我知道代码可能看起来相当粗糙，但这是我在没有教程的情况下自行构建的第一个应用程序。如果您能提供任何帮助或见解，我将不胜感激。这个任务看起来很简单，但我已经把自己逼疯了。

如果您需要我提供更多信息或代码，请告诉我，我会马上处理。

你们很棒，再次感谢。

Answer 1

在您的用户控制器中：

  # users_controller.rb
  def show
    @user = User.find(params[:id])
    @recipes = Recipe.joins(:favorites).where('favorites.user_id = ?', @user.id)
    # rest of your codes
  end

这个@recipes = Recipe.joins(:favorites).where('favorites.user_id = ?', @user.id)应该给你当前用户喜欢的食谱，这就是你要找的。

在 user#show 中显示最喜欢的食谱列表

Displaying a list of favorited recipes in user#show

html

css

favorites

ruby-on-rails