我正在尝试添加评论并刷新页面

时间:2020-01-11 16:17:18

标签: javascript ruby-on-rails ruby forms

当我尝试添加评论时,它不会附加在表格上。当我刷新页面时,它会追加。我不知道这是什么问题。我想我做得很好。页面上没有错误。不管我添加到表中什么,它都放在表中,但仅在刷新页面之后。

show.html.erb

...
<table id="comments">
  <tbody>
    <% @article.comments.each do |comment| %>
      <%= render 'comments/comment', comment: comment %>
    <% end %>
  </tbody>
...

_comment.html.erb

<tr>
  <td><p><%= comment.name %></p></td>
  <td><p><%= comment.body %></p></td>
  <td><p><%= time_ago_in_words(comment.created_at) %> Ago</p></td>
  <% if User.find_by(email: comment.name) == current_user %>
    <td><%= link_to 'Delete', [comment.article, comment], method: :delete, data: { confirm: 'Are you sure?' } %></td>
  <% else %>
    <td> </td>
  <% end %>
</tr>

create.js.erb

$('table#comments tbody').append("<%= j render @comment %>")

终端

ActionController::UnknownFormat (ActionController::UnknownFormat):

app/controllers/comments_controller.rb:7:in `create'

routes.rb

Rails.application.routes.draw do


  get 'search/index'

  devise_for :users
  get 'welcome/index'
  get '/search', to: 'search#search'



  resources :user
  resources :articles do
    resources :comments
    member do
      put "like" => "articles#like"
      put "unlike" => "articles#unlike"
    end
  end
  resources :search, only: [:index]

  root 'welcome#index'
end

comments_controller.rb

def create
    @article = Article.find(params[:article_id])
    @comment = @article.comments.create(params[:comment].permit(:name, :body))
    @comment.name = current_user.email
    respond_to do |format|
        if @comment.save
            format.js 
            format.html { redirect_to @comment }
            format.json { render :show, status: :created, location: @comment }
        else

        end
    end
end

2 个答案:

答案 0 :(得分:1)

由于默认情况下,从控制器返回的格式为html。因此,您需要在控制器中添加另一个共振峰js才能使js.erb正常工作。

答案 1 :(得分:0)

您的控制器应该是这样的:

def create
 ............ 
 if @comment.save
    respond_to do |format|
      format.js
    end
  end 
end

要处理的错误:在create.js.erb文件中,检查@comment.errors.any?-然后执行您想做的所有事情。