Question

Rails的新手。自学。标题几乎总结了我正在构建您的基本博客应用程序并正在开发评论功能。使用了三个不同的表：User，Post，Comment以及每个表之间的标准关联。代码示例如下......

CommentsController

def new
    @post = Post.find(params[:post_id])
    @comment = Comment.new
end

def create
   @post = Post.find(params[:post_id])
   @comment = @post.comments.new(params[:comment]) #throwing the attributes error here
   @user = current_user
    if @comment.save
        redirect_to root_path
    else
        render 'new'
    end
end

private

  def comment_params
    params.require(:comment).permit(:user_id, :post_id, :content)
  end

评论_form.html.erb

<%= form_for @comment, :url => post_comments_path(@post) do |f| %>
  <% if @comment.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@comment.errors.count, "error") %> prohibited this post from being saved:</h2>

      <ul>
      <% @comment.errors.full_messages.each do |message| %>
        <li><%= message %></li>
      <% end %>
      </ul>
    </div>
  <% end %>
  <div class="field-content">
    <%= f.label :content %><br>
    <%= f.text_area :content, size: "60x5" %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

路由

Rails.application.routes.draw do
  root                      'visitors#index'
  get           '/about',   to: 'visitors#about'
  get           '/show',    to: 'visitors#show'
  get           '/login',   to: 'sessions#new'
  post          '/login',   to: 'sessions#create'
  get           '/logout',  to: 'sessions#destroy'

  resources         :visitors, only:[:index]
  resources         :posts
  resources         :users

  resources :posts, :shallow => true do 
    resources :comments
  end
end

错误参数

{"utf8"=>"✓",
 "authenticity_token"=>"wLU6Bv7lBoJZQ1chWgY7kRweok7m/KvylO5zWBXtD3JGr2rz2VFumXSswGuf9thn32uBQU3rT84mTOd6sE5KHQ==",
 "comment"=>{"content"=>"THis is a comment"},
 "commit"=>"Create Comment",
 "post_id"=>"5"}

正如我提到它的禁用属性错误，我知道这与我下面的强参数有关，但我很难过。任何帮助都将很乐意和真诚地受到赞赏。

Answer 1

尝试以下代码。

@comment = @post.comments.new(comments_params)

您应该将强参数方法传递给模型中的new, create or update方法。

又一个被禁止的属性错误 - 无法找到我出错的地方

1 个答案: