레일 4 : 사용자 로그인 후 목록을 업로드 할 수 없습니다.

Question

사용자가 로그인하여 목록을 만들 수있는 앱이 있습니다. 이것은 로컬 호스트에서 작동하지만 Heroku가에 난에 서명하고가 (#에 대한 정의되지 않은 메서드`USER_ID = ')

NoMethodError 충돌 목록을 제출 한 후 :

전체 오류를

Parameters: {"utf8"=>"✓", "authenticity_token"=>"B+y5VOvBRe+TgTEXP+2mbElYy2LqPShkeqxy+pXizHI=", "listing"=>{"name"=>"apples", "description"=>"bunch of apples", "price"=>"2.33", "quantity"=>"12", "company"=>"test", "image"=>#<ActionDispatch::Http::UploadedFile:0x007f3159693278 @tempfile=#<Tempfile:/tmp/RackMultipart20140722-2-7zodjh>, @original_filename="apples.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"listing[image]\"; filename=\"apples.jpg\"\r\nContent-Type: image/jpeg\r\n">}, "commit"=>"Create Listing"} 
2014-07-22T16:23:35.323773+00:00 app[web.1]: Command :: file -b --mime '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-4vgehy.jpg' 
2014-07-22T16:23:35.323967+00:00 app[web.1]: Command :: file -b --mime '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-4vgehy.jpg' 
2014-07-22T16:23:35.595147+00:00 app[web.1]: Command :: identify -format %m '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' 
2014-07-22T16:23:35.775282+00:00 app[web.1]: Command :: convert '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' -auto-orient -resize "50" '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-8o0hbb' 
2014-07-22T16:23:35.595158+00:00 app[web.1]: Command :: identify -format %m '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' 
2014-07-22T16:23:35.775255+00:00 app[web.1]: Command :: convert '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' -auto-orient -resize "50" '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-8o0hbb' 
2014-07-22T16:23:36.165057+00:00 app[web.1]: Command :: file -b --mime '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-8o0hbb' 
2014-07-22T16:23:36.165138+00:00 app[web.1]: Command :: file -b --mime '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-8o0hbb' 
2014-07-22T16:23:36.258293+00:00 app[web.1]: Command :: identify -format '%wx%h,%[exif:orientation]' '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' 2>/dev/null 
2014-07-22T16:23:36.258523+00:00 app[web.1]: Command :: identify -format '%wx%h,%[exif:orientation]' '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' 2>/dev/null 
2014-07-22T16:23:36.424127+00:00 app[web.1]: Command :: identify -format %m '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' 
2014-07-22T16:23:36.424101+00:00 app[web.1]: Command :: identify -format %m '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' 
2014-07-22T16:23:36.588678+00:00 app[web.1]: Command :: convert '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' -auto-orient -resize "100x100>" '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-jb4tv3' 
2014-07-22T16:23:36.777832+00:00 app[web.1]: Command :: file -b --mime '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-jb4tv3' 
2014-07-22T16:23:36.777843+00:00 app[web.1]: Command :: file -b --mime '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-jb4tv3' 
2014-07-22T16:23:36.588555+00:00 app[web.1]: Command :: convert '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu6.jpg[0]' -auto-orient -resize "100x100>" '/tmp/daeccf0ad3c1fc8c8015205c332f5b4220140722-2-mesu620140722-2-jb4tv3' 
2014-07-22T16:23:36.863756+00:00 heroku[router]: at=info method=POST path="/listings" host=sincurudemo.herokuapp.com request_id=17e210ab-2955-418b-9dd8-0475a29b3271 fwd="185.30.24.132" dyno=web.1 connect=0 service=1830 status=500 bytes=28895 
2014-07-22T16:23:36.856835+00:00 app[web.1]: Completed 500 Internal Server Error in 1618ms 
2014-07-22T16:23:36.856688+00:00 app[web.1]: Completed 500 Internal Server Error in 1618ms 
2014-07-22T16:23:36.861125+00:00 app[web.1]: 
2014-07-22T16:23:36.861129+00:00 app[web.1]: NoMethodError (undefined method `user_id=' for #<Listing:0x007f3159698f20>): 
2014-07-22T16:23:36.861322+00:00 app[web.1]: app/controllers/listings_controller.rb:36:in `create' 
2014-07-22T16:23:36.861141+00:00 app[web.1]: app/controllers/listings_controller.rb:36:in `create' 
2014-07-22T16:23:36.861142+00:00 app[web.1]: 
2014-07-22T16:23:36.861144+00:00 app[web.1]: 
2014-07-22T16:23:36.861317+00:00 app[web.1]: 
2014-07-22T16:23:36.861320+00:00 app[web.1]: NoMethodError (undefined method `user_id=' for #<Listing:0x007f3159698f20>): 
2014-07-22T16:23:36.861325+00:00 app[web.1]: 
2014-07-22T16:23:36.861324+00:00 app[web.1]: 

목록을 다음과 같이. controller.rb

class ListingsController < ApplicationController 
    before_action :set_listing, only: [:show, :edit, :update, :destroy] 
    before_action :authenticate_user!, only: [:seller, :new, :create, :edit, :update, :destroy] 
    before_filter :check_user, only: [:edit, :update, :destroy] 

    # GET /listings 
    # GET /listings.json 

    def seller 
    @listings = Listing.where(user: current_user).order("created_at DESC") 
    end 


    def index 
    @listings = Listing.all.order("created_at DESC") 
    end 

    # GET /listings/1 
    # GET /listings/1.json 
    def show 
    end 

    # GET /listings/new 
    def new 
    @listing = Listing.new 
    end 

    # GET /listings/1/edit 
    def edit 
    end 

    # POST /listings 
    # POST /listings.json 
    def create 
    @listing = Listing.new(listing_params) 
    @listing.user_id = current_user.id 

    respond_to do |format| 
     if @listing.save 
     format.html { redirect_to @listing, notice: 'Listing was successfully created.' } 
     format.json { render action: 'show', status: :created, location: @listing } 
     else 
     format.html { render action: 'new' } 
     format.json { render json: @listing.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # PATCH/PUT /listings/1 
    # PATCH/PUT /listings/1.json 
    def update 
    respond_to do |format| 
     if @listing.update(listing_params) 
     format.html { redirect_to @listing, notice: 'Listing was successfully updated.' } 
     format.json { head :no_content } 
     else 
     format.html { render action: 'edit' } 
     format.json { render json: @listing.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # DELETE /listings/1 
    # DELETE /listings/1.json 
    def destroy 
    @listing.destroy 
    respond_to do |format| 
     format.html { redirect_to listings_url } 
     format.json { head :no_content } 
    end 
    end 

    private 
    # Use callbacks to share common setup or constraints between actions. 
    def set_listing 
     @listing = Listing.find(params[:id]) 
    end 

    # Never trust parameters from the scary internet, only allow the white list through. 
    def listing_params 
     params.require(:listing).permit(:name, :description, :price, :quantity, :company, :image) 
    end 

    def check_user 
     if current_user != @listing.user 
     redirect_to root_url, alert: 'Sorry, This listing belongs to someone else' 
     end 
    end 
end 

listing.rb

class Listing < ActiveRecord::Base 
    if Rails.env.development? 
    has_attached_file :image, :styles => { :small => "50x", :thumb => "100x100>" }, :default_url => "default.jpg" 
    validates_attachment_content_type :image, :content_type => %w(image/jpeg image/jpg image/png) 

    else 
    has_attached_file :image, :styles => { :small => "50x", :thumb => "100x100>" }, :default_url => "default.jpg", 
     :storage => :dropbox, 
     :dropbox_credentials => Rails.root.join("config/dropbox.yml"), 
     :path => ":style/:id_:filename" 
    end 
    validates_attachment_content_type :image, :content_type => %w(image/jpeg image/jpg image/png) 
    validates_attachment_presence :image 


    validates :name, :description, :price, presence: true 
    validates :price, numericality: { greater_than: 0 } 

    belongs_to :user 
end 


class AddUserIdToListings < ActiveRecord::Migration 
    def change 
    add_column :listings, :user_id, :integer 
    end 
end 

Answer 1

@listing 변수에는 listing_params 메서드에 해당 값이 없기 때문에 user_id 변수가 없으므로 @listing.user_id = current_user.id에 오류가 발생합니다.

def listing_params 
    params.require(:listing).permit(:name, :description, :price, :quantity, :company, :image,:user_id) 
end