未定義のnilメソッド：NilClass - Controller

Question

予約を作成しようとするたびに次のエラーが表示されることがあります。

NoMethodError in BookingsController#create 

undefined method `diary_slot_day_time_path' for nil:NilClass 

私は自分のコントローラに次のコードを持っている：

class BookingsController < PortalController 

    # GET /bookings 
    # GET /bookings.json 
    def index 

    session[:booking_context] = 'index' 

    if current_user.is_booking_manager? 
    # @bookings = Booking.all 
    # @bookings = Booking.filter(params[:search], [:reference_number, :company_id]) 
    @bookings = Booking.includes(:company).filter(params[:search], [:reference_number, "companies.name"]) 
    @main_heading = 'Bookings' 
    else 
     @bookings = current_user.company.bookings 
    @main_heading = "#{current_user.company.name} Bookings" 
    end 

    respond_to do |format| 
     format.html # index.html.erb 
    end 
    end 

    # GET /bookings/1 
    def show 
    @booking = Booking.find(params[:id]) 
    goto_booking(@booking) 
    end 

    # GET /bookings/1/edit 
    def edit 
    @booking = Booking.find(params[:id]) 
    @main_heading = 'Edit Booking' 
    end 

    # Go to booking 
    def goto_booking(booking) 

    site = @booking.site 
    slot_day = @booking.slot_day 
    slot_time = @booking.slot_time 

    # don't need to check slot_time because it is optional 
    if session[:booking_context] and session[:booking_context] == 'diary' and site and slot_day 
     # Go the diary page 
     respond_to do |format| 
     format.html { redirect_to diary_slot_day_time_path(site, slot_day, slot_time) } 
     end 
    else 

     # Go to booking edit page 
     respond_to do |format| 
     format.html { redirect_to edit_booking_path(@booking) } 
     end 
    end 
    end 

    # POST /bookings 
    def create 
    @booking = Booking.new(params[:booking]) 
    unless @booking and @booking.slot_time and @booking.slot_time.number_of_free_slots > 0 
     flash[:notice] = 'Slot no longer available' 
     redirect_to :back 
     return 
    end 

    if @booking.save 
     flash[:notice] = 'Booking was successfully created' 
     goto_booking(@booking) 
    else 
     @main_heading = 'Review New Booking' 
     respond_to do |format| 
     format.html { render action: "new" } 
     end 
    end 
    end 

    # PUT /bookings/1 
    def update 
    @booking = Booking.find(params[:id]) 
    if @booking.update_attributes(params[:booking]) 
     flash[:notice] = 'Booking was successfully updated' 
     goto_booking(@booking) 
    else 
     @main_heading = 'Review Booking' 
     respond_to do |format| 
     format.html { render action: "edit" } 
     end 
    end 
    end 

    def confirmation 
    begin 
     @booking = Booking.find(params[:booking][:id]) 
     @booking.update_attributes(params[:booking]) 
     if params[:make_unexpected] 
     @booking.provisional_appointment = nil 
     @booking.save! 
     end 
     @booking.update_slot! 
     success = true 
    rescue => e 
     flash[:error] = e.message 
     success = false 
    end 

    if success 
     flash[:notice] = 'Booking confirmed' 
     respond_to do |format| 
     format.html { redirect_to booking_path(@booking) } 
     end  
    else 
     redirect_to :back 
    end 
    end 

    # DELETE /bookings/1 
    def destroy 
    @booking = Booking.find(params[:id]) 

    if @booking 
     if session[:booking_context] and session[:booking_context] == 'diary' 
     site = @booking.site 
     slot_day = @booking.slot_day 
     slot_time = @booking.slot_time 
     end 

     if @booking.destroy 
     flash[:notice] = 'booking removed' 
     else 
     flash[:error] = 'could not remove booking' 
     end 
    end 

    # don't need to check slot_time; that's optional 
    if site and slot_day 

     # redirect to diary page 
     respond_to do |format| 
     format.html { redirect_to diary_slot_day_time_path(site, slot_day, slot_time) } 
     end 
    else 

     # redirect to booking index 
     respond_to do |format| 
     format.html { redirect_to bookings_url } 
     end 
    end 
    end 

    def diary_slot_day_time_path(*args) 
    @template.diary_slot_day_time_path(*args) 
    end 

end 

私は潜在的に私がよく間違っている可能性がありルーティングエラーとは何かだと思います。これは私の完全なトレースエラーです：Pastie。私はgo_to_booking、createメソッドに何か問題があることを私に示すトレースを見てきました。

Answer 1

なぜこのメソッドはコントローラの下部に定義されていますか？

def diary_slot_day_time_path(*args) 
    @template.diary_slot_day_time_path(*args) 
end 

これは、あなたがそのエラーを取得している理由です@templateと呼ばれる未定義のインスタンス変数を、参照しようとしています。

あなたはこのようなネストされたルートを使用することによって、あなたのルートでこのメソッドを定義する必要があります。

match '/diary/:day/:time', :to => "some_controller#some_action", :as => "diary_slot_day_time"