Question

我创建了一个播放列表关联，以便用户可以选择将曲目添加到播放列表。这样做的问题是，用户现在无法通过belongs_to :user

以正常方式上传曲目

我协会中的某些东西打破了关系，我无法弄清楚它是什么，这里是我模特的所有相关代码：

class User < ActiveRecord::Base
require 'soundcloud'
acts_as_voter
belongs_to :gallery
has_many :tracks



has_many :active_relationships, class_name:  "Relationship",
                              foreign_key: "follower_id",
                              dependent:   :destroy

has_many :passive_relationships, class_name:  "Relationship",
                               foreign_key: "followed_id",
                               dependent:   :destroy                                

has_many :following, through: :active_relationships, source: :followed
has_many :followers, through: :passive_relationships, source: :follower

has_many :playlists
has_many :tracks, through: :playlists
end

-

class Playlist < ActiveRecord::Base
belongs_to :user
has_many :playlist_tracks
has_many :tracks, through: :playlist_tracks
end

-

class PlaylistTrack < ActiveRecord::Base
belongs_to :playlist
belongs_to :track
end

-

class Track < ActiveRecord::Base
acts_as_votable
belongs_to :user

has_many :playlist_tracks

has_many :playlists, through: :playlist_tracks

mount_uploader :track, TrackUploader

validates :title, presence: true
validates :description, presence: true
validates :track, presence: true
validates_length_of :title, :minimum => 2, :too_short => "please enter at least %d character"
validates_length_of :description, :minimum => 10, :too_short => "please enter at least %d characters"


def self.search(query)
# where(:title, query) -> This would return an exact match of the query
where("title || description like ?", "%#{query}%")
end
end

如果我应该澄清有关这个问题的任何事情，请告诉我。谢谢。

编辑：

错误：无法修改关联'User＃tracks'，因为它会经历多个其他关联。

错误指向tracks_controller.rb中的create动作

class TracksController < ApplicationController
skip_before_filter  :verify_authenticity_token
def show
    @track = Track.find_by(id: params[:id])
end

def new
    @user = User.find(params[:user_id])
    @track = Track.new
end

def create
    @user = current_user
    @track = @user.tracks.create(track_params)

    if @track.save
        redirect_to user_path(current_user)
    else
        redirect_to :back
        flash[:alert] = 'There was an error processing your request'
    end
end

def upvote 
  @track = Track.find_by(id: params[:id])
  @track.upvote_by current_user

  render json: @track
end  

def unvote
  @track = Track.find_by(id: params[:id])
  @track.unliked_by current_user

  render json: @track
end

 def likes
    @user = User.find_by(id: params[:id])
    @likes = @user.find_voted_items

    render json: @likes
 end



 private

 def track_params
   params.require(:track).permit(:track, :user_id, :title, :description, :artist)
 end

 end

更新：当我在用户模型中删除7时，它不会给我一个错误，但该曲目不会保存......

无法修改关联'User＃tracks'，因为它经历了多个其他关联

0 个答案: