所以，我无法让Thumbs Up gem正常工作。
我已按照本教程进行操作，但似乎遇到了以下错误：
错误信息：
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 %>
index.html.erb
<div id="layout1">
<h3>Songs</h3>
<ol>
<% @songs.each do |song| %>
<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 %>
<%#= link_to 'Show', song, class: "button small secondary" %>
<%= link_to('Edit', edit_song_path(song), class: "button small secondary") if can? :update, @song %>
<%= link_to('Destroy', song, method: :delete, data: {confirm: 'Are you sure?'}, class: "button small secondary") if can? :destroy, @song %>
<% end %>
</ol>
</div>
<br />
</div>
song_controller.rb
class SongsController < ApplicationController
before_filter :authenticate_user!, only: [:create ,:edit, :update, :destroy, :vote_for_song]
before_action :set_song, only: [:show, :edit, :update, :destroy, :vote_for_song]
def vote_for_song
@song = Song.find(params[:id])
current_user.vote_for(@song)
respond_to do |format|
format.js
end
end
def vote_against_song
@song = Song.find(params[:id])
current_user.vote_against(@song)
respond_to do |format|
format.js
end
end
# GET /Songs
# GET /Songs.json
def index
@songs = Song.all
end
# GET /Songs/1
# GET /Songs/1.json
def show
@comment = Comment.new(song: @song)
end
# GET /Songs/new
def new
@song = Song.new
end
# GET /Songs/1/edit
def edit
end
# POST /Songs
# POST /Songs.json
def create
@song = Song.new(song_params)
respond_to do |format|
if @song.save
format.html { redirect_to @song, notice: 'Song was successfully created.' }
format.json { render action: 'show', status: :created, location: @song }
else
format.html { render action: 'new' }
format.json { render json: @song.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /Songs/1
# PATCH/PUT /Songs/1.json
def update
respond_to do |format|
if @song.update(song_params)
format.html { redirect_to @song, notice: 'Song was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @song.errors, status: :unprocessable_entity }
end
end
end
# Song /Songs/1
# Song /Songs/1.json
def destroy
@song.destroy
respond_to do |format|
format.html { redirect_to songs_url }
format.json { head :no_content }
end
end
private
def set_song
@song = Song.find(params[:id])
end
def song_params
params.require(:song).permit(:title, :artist, :bio, :track, :user_id)
end
end
歌曲.rb
class Song < ActiveRecord::Base
acts_as_voteable
belongs_to :user
has_many :comments, :dependent => :destroy
has_attached_file :track,
:url => "/assets/songs/:id/:style/:basename.:extension",
:path => ":rails_root/public/assets/songs/:id/:style/:basename.:extension"
validates_attachment :track, :presence => true
validates :title, length: { minimum: 10 }
validates :bio, length: { maximum: 300 }
end
用户.rb
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
投票.rb
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
路线.rb
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