为什么我的Active Record验证无效？

Question

因此，我在我的应用程序中为用户留下了有关电影评论的评论模型。我正在为每个单独的电影在“显示”视图中呈现新评论的表单。但是，当我尝试提交空白评论以检查页面上显示的错误时，他们没有。我可能做错了什么？

我的审查模式：

class Review < ActiveRecord::Base 
    attr_accessible :content 
    belongs_to :user 
    belongs_to :movie 

    validates :user_id, presence: true 
    validates :movie_id, presence: true 
    validates :content, presence: true, length: { maximum: 1000 } 

end 

我的评论控制器：

class ReviewsController < ApplicationController 
    before_filter :signed_in_user, only: [:new, :create, :destroy] 

    def new 
    end 

    def create 

    #I'm doing this to get around the mass assignment error. 

    movie_id = params[:review].delete(:movie_id) 
    @review = current_user.reviews.build(params[:review]) 
    @review.movie_id = movie_id 

    if @review.save 
     flash[:success] = "Review created!" 
     redirect_to movie_path(@review.movie) 
    else 
     redirect_to movie_path(@review.movie) 
    end 
    end 

    def destroy 
    end 
end 

我的形式：

<%= form_for(:review, url: reviews_path) do |f| %> 

    <%= f.hidden_field :movie_id %> 
    <div class="field"> 
    <%= f.text_area :content, placeholder: "Write a new review..." %> 
    </div> 
    <%= f.submit "Submit", class: "btn btn-large btn-primary" %> 
<% end %> 

Answer 1

当您重定向从＃创建方法的时候，你失去了错误...更改为

if @review.save 
    flash[:success] = "Review created!" 
    redirect_to movie_path(@review.movie) 
else 
    render :new 
end