Rails拋出錯誤，而不是驗證

Question

我正在構建一個相當簡單的Rails 5應用程序。您創建「電影」，然後可以爲這些電影創建「評論」。 Rails正在做一些奇怪的事情。我有我的應用程序設置，而不是一個「新的」行動和相應的視圖，我有形式來創建新的電影在application.html.erb文件中包含的模式。然後，我在控制器中爲所有電影視圖提供@newmovie = Movie.new，因此數據在任何地方都可用。

我對影片對象設置這樣的驗證：

class Movie < ApplicationRecord 
    has_many :reviews 
    validates :title, :director, :poster, :synopsis, presence: true 
end 

當我填寫表格對我的索引視圖中創建的模式一個新的電影，並有意離開領域的空白（觸發驗證），我得到這個：

，而不是簡單地形成不接受輸入。這裏發生了什麼？我不能有這樣的錯誤發生。以前，我有一個「新」的觀點。這在以前的設置中沒有發生。幫幫我！

這裏是我的整個電影控制器：

class MoviesController < ApplicationController 

    before_action :find_movie, only: [:show, :edit, :update, :destroy ] 
    before_action :authenticate_user!, only: [:new, :create, :edit, :update, :destroy] 
    before_action :find_newmovie, only: [:show, :index, :new, :edit] 

    def show 
     @reviews = @movie.reviews.all.order(created_at: :desc).paginate(:page => params[:page], :per_page => 3) 
     @review = Review.new 
     if @movie.reviews.blank? 
      @average_review = 0 
     else 
      @average_review = @movie.reviews.average(:rating).round(2) 
     end 
    end 

    def index 
     @movies = Movie.all.order(title: :asc).paginate(:page => params[:page], :per_page => 3) 
     @newmovie = Movie.new 
    end 

    def new 
     @movie = Movie.new 
    end 

    def create 
     @movie = Movie.create(movie_params) 
     @movie.user_id = current_user.id 
     if @movie.save 
      flash[:success] = "Your movie was created!" 
      redirect_to root_path 
     else 
      flash[:danger] = "There was a problem with your request" 
      render :new 
     end 
    end 

    def edit 

    end 

    def update 
     if @movie.update(movie_params) 
      flash[:success] = "Your movie was updated" 
      redirect_to movie_path 
     else 
      flash[:danger] = "There was a problem with your request" 
     end 
    end 

    def destroy 
     if @movie.destroy 
      flash[:success] = "Your movie was removed" 
      redirect_to movies_path 
     else 
      flash[:danger] = "There was a problem with your request" 
      render :index 
     end 
    end 

    private 

     def movie_params 
      params.require(:movie).permit(:title, :director, :poster, :synopsis, :user_id) 
     end 

     def find_movie 
      @movie = Movie.find(params[:id]) 
     end 

     def find_newmovie 
      @newmovie = Movie.new 
     end 

end 

Answer 1

在new的movies_controller動作，你錯過了initalize實例變量@newmovie。

添加以下代碼movies_controller：

class MoviesController < ApplicationController 
    def new 
     @newmovie = Movie.new 
    end 
    ... 
    end