Ruby on rails 未定义的方法“为歌曲投票”路径'；[第4条]

所以，我很难找到工作

我已经遵循了，但我似乎犯了以下错误：

错误消息：

NoMethodError in Songs#index

Showing /Users/apane/Downloads/leap_stage/leap_stage/app/views/songs/index.html.erb where line #10 raised:

undefined method `vote_for_song_songs_path' for #<#<Class:0x007fd0b60203d0>:0x007fd0b26ecdc0>

<li><%= link_to song.title, song %><br></li>
Submitted <%= time_ago_in_words(song.created_at) + " ago" %>
<span class="comments"> | <%= pluralize(song.comments.size, 'comment') %></span><br />
<%=link_to image_tag('thumbs_up', :border => 0), vote_for_song_songs_path(@song), :remote => true %>
<%=link_to image_tag('thumbs_down', :border => 0), vote_against_song_songs_path(@song), :remote => true %> 

---

因为您需要一个：id参数，所以它应该是get或put，为了避免编写“song_songs”，您可以这样做

resources :songs do
  member do
    get :vote_for, :vote_against
  end
end

这将获得对歌曲路径（@song）的投票和对歌曲路径（@song）的投票。从技术上讲，让

put:vote_支持

更为正确，因为这不是一个幂等请求，但您需要记住将

method:：put

放在url的末尾

编辑：要获得要显示的投票数，请在页面中添加一个元素，如

<span class="votes"><%= pluralize(song.votes.count, 'Vote') %></span>

这将生成类似于

…

的html，您可以在update\u.js.erb模板中引用它

$("#song_<%= @song.id %> .votes").html("<%= pluralize(song.votes.count, "Vote") %>")

---

投赞成票和投反对票的行动都可以做到这一点。

这样做了，现在我得到了：未定义的方法“投赞成票，投反对票，投赞成票，投反对票路径”是正确的，因为该方法现在可以写成

投赞成票，而不是
投赞成票，投反对票路径
。谢谢我的朋友，最后一件事是，当我单击“竖起大拇指”或“竖起大拇指”时，它似乎起作用了，但你知道我如何显示投票数吗？解决方案足够长，我将编辑我的答案。
class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :songs
  has_many :comments

  acts_as_voter

end

class Vote < ActiveRecord::Base

  scope :for_voter, lambda { |*args| where(["voter_id = ? AND voter_type = ?", args.first.id, args.first.class.base_class.name]) }
  scope :for_voteable, lambda { |*args| where(["voteable_id = ? AND voteable_type = ?", args.first.id, args.first.class.base_class.name]) }
  scope :recent, lambda { |*args| where(["created_at > ?", (args.first || 2.weeks.ago)]) }
  scope :descending, lambda { order("created_at DESC") }

  belongs_to :voteable, :polymorphic => true
  belongs_to :voter, :polymorphic => true

  attr_accessible :vote, :voter, :voteable if ActiveRecord::VERSION::MAJOR < 4


  # Comment out the line below to allow multiple votes per user.
  validates_uniqueness_of :voteable_id, :scope => [:voteable_type, :voter_type, :voter_id]

end

Leap2::Application.routes.draw do

  resources :comments

  devise_for :users, controllers: {registrations: 'registrations'}
  resources :songs


  get '/contact', to: 'songs#contact'
  get '/faq', to: 'songs#faq'

  root to: 'songs#index'
  end

resources :songs do
  member do
    get :vote_for, :vote_against
  end
end

<span class="votes"><%= pluralize(song.votes.count, 'Vote') %></span>

<%= content_tag_for :li, song do %>
   [then put everything in your view that has to do with one song in the block]
<% end %>

$("#song_<%= @song.id %> .votes").html("<%= pluralize(song.votes.count, "Vote") %>")

format.js { render 'update_votes' }