在“收藏夹”连接模型 Rails 5.2 上出现 NoMethod 错误

Question

我正在尝试让User 收藏coffee_roast。然而，在尝试加载显示页面时，我得到一个 NoMethod 错误

未定义的方法`favorite_coffee_roast_path'

来自这行代码：

  <%= link_to "Add to favorites", favorite_coffee_roast_path(@coffee_roast, type: "favorite"), method: :put %><br />

我尝试了多种变体，例如：

• favorite_roast_coffee_roast_path
• favorite_coffeeroast_coffee_roast_path
• favorite_coffee_roast_coffee_roast_path

显然没有任何作用。

我的模型

class User < ApplicationRecord
  has_merit
  has_one :drink
  has_many :coffeeshops
  has_many :coffee_roasts
  has_many :favorite_coffeeroasts
  has_many :favorite_roasts, through: :favorite_coffeeroasts, source: :coffee_roast

class CoffeeRoast < ApplicationRecord

  has_many :favorite_coffeeroasts
  has_many :favorited_by, through: :favorite_coffeeroasts, source: :user

class FavouriteCoffeeroast < ApplicationRecord
    belongs_to :coffee_roast
    belongs_to :user

我的控制器

class CoffeeRoastsController < ApplicationController
...
  def favorite_coffeeroast
    @coffee_roast = CoffeeRoast.find(params[:id])
    type = params[:type]
    if type == "favorite"
    current_user.favorite_roasts << @coffee_roast
    redirect_to @coffee_roast, notice: "You favorited #{@coffee_roast.name}"

    elsif type == "unfavorite"
      current_user.favorite_roasts.delete(@coffee_roast)
      redirect_to @coffee_roast, notice: "Unfavorited #{@coffee_roast.name}"

    else
      # Type missing, nothing happens
      redirect_to @coffee_roast, notice: "Nothing happened."
      end
    end

routes.rb

Rails.application.routes.draw do


  #core root
  get 'home/index' => 'home#index'
  root 'home#index'

  #roasts redirect
  get '/roasts', to: redirect('/coffee_roasts', status: 302)

  namespace :api do
    namespace :v1 do
      resources :roasts
    end
  end
  resources :blends
  resources :roasters
  resources :countries
  resources :regions
  resources :comments
  resources :coffee_flavours
  resources :flavours
  resources :drinks
  devise_for :users
  devise_for :admins
  resources :varietals
  resources :tags
  resources :coffee_beans
  resources :coffee_roasts
  resources :processings


  get 'contact-me', to: 'messages#new', as: 'new_message'
  post 'contact-me', to: 'messages#create', as: 'create_message'


#static pages
get 'about', to: 'pages#about'
get 'cookiepolicy', to: 'pages#cookiepolicy'
get 'map', to: 'pages#map'
get 'longblack', to: 'longblack#index'
get 'prices', to: 'prices#new'
post 'prices', to: 'prices#create'


#db resources
resources :roasters do
   resources :comments
end
resources :articles do
   resources :comments
end
resources :coffeeshops do
  resources :comments
end
resources :roasts do
  resources :comments
end
resources :coffee_roasts do
  resources :comments
end
resources :coffeeshops do
  put :favorite, on: :member
end

resources :coffeeshops do
  put :bookmarked, on: :member
end

为什么我找不到正确的路径？我错过了什么？

Answer 1

看来您需要了解更多关于 routing in ROR 的信息。将新操作添加到现有的resources :coffee_roasts：

resources :coffee_roasts do
  put :favorite_coffeeroast, on: :member
  resources :comments
end

此外，当您编写带有和不带有嵌套的路由时，您正在复制路由。由于您想在任何地方嵌套 cmets 路由，您可以在不嵌套的情况下删除相应的路由