在rails中没有用ajax渲染的评论

Question

我尝试在我的 Rails 应用程序中使用 ajax 渲染我的 cmets...但它不工作，并且在我重定向页面后 cmets 显示...所以评论成功创建但问题是渲染 cmets ajax 和 jquery！！！！ 我的 application.html.erb 中有这行：

<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= csrf_meta_tags %>

这需要我的 application.js 中的行：

//= require jquery
//= require jquery_ujs

这是我在帖子下的 show.html.erb 文件：

<div id="posts" class="transitions-enabled">
  <div class="box panel panel-default">
    <%= render 'post', post: @post %>
  </div>
</div>

我的_post部分：

<div class="panel-body">
  <%= link_to image_tag(post.user.avatar.url, size: "50x50", class: "img-circle"), profile_path(post.user.user_name) %>
  <ul class="posts-shows">
    <li><strong><%= link_to post.user.user_name, profile_path(post.user.user_name)  %></strong></li>
    <li><small><%= link_to "#{time_ago_in_words(post.created_at)} ago", post_path(post), class: "time-link" %></small></li>
  </ul>
  <p class="disc-posts"><%= post.description %></p>
  <%= link_to image_tag(post.image.url(:large), class: "img-responsive img-in" ) %><br/>
  <% if post.user == current_user %>
    <div><%= link_to "Edit", edit_post_path(post) %> | <%= link_to "delete", post, method: :delete, data: {confirm: "Are you sure?"} %> </div>
  <% else %>                            
    <div><%= link_to "Repost", repost_post_path(post), method: :post, data: { confirm: "Are you sure?"} if user_signed_in? %></div>                 
  <% end %>
</div>

<div class="panel-footer">
  <div class="comment-form">
    <%= form_for([post, post.comments.build], remote: true) do |f| %>
      <%= f.text_field :content, placeholder: 'Add a comment...', class: "form-control comment_content", id: "comment_content_#{post.id}"  %>
    <% end %>
  </div>
  <div class="comments" id= "comments_#{post.id}">
    <% if post.comments.present? %>
      <%= render post.comments, post: post %>
    <% end %>
  </div>
</div>

我在 cmets 文件夹中的 _comment.html.erb：

<% if  comment.user_id.present? %>
  <div id="comment">
    <%= link_to image_tag(post.user.avatar.url, size: "30x30", class: "img-circle img-comments"), profile_path(comment.user.user_name) %>
    <div class="user-name">
        <%= link_to comment.user.user_name, profile_path(comment.user.user_name), class: "username-size" %>
    </div>
    <div class="comment-content">
      <%= comment.content %>
    </div>
  </div>
<% end %>

这里是 cmets 文件夹下的 create.js.erb ：

$('#comments_<%= @post.id %>').append("<%=j render 'comments/comment', post: @post, comment: @comment %>");
$('#comment_content_<%= @post.id %>').val('')

和我的 cmets 控制器：

class CommentsController < ApplicationController
  before_action :set_post

  def index
    @comments = @post.comment.all
  end

  def new
    @comment = @post.comments.build(comments_params)
  end

  def create
    @comment = @post.comments.build(comments_params)
    @comment.user_id = current_user.id

    if @comment.save
        respond_to do |format|
            format.html { redirect_to root_path }
            format.js
        end
    else
        flash[:alert] = "Check the comment form, something went horribly wrong."
        render root_path
    end
  end


  def destroy
    @comment = @post.comments.find(params[:id])

    @comment.destroy
    flash[:success] = "Comment deleted :("
    redirect_to root_path
  end

  private

  def comments_params
    params.require(:comment).permit(:content)
  end

  def set_post
    @post = Post.find(params[:post_id])
  end
end

Answer 1

我不认为这条线是正确的 -

<div class="comments" id= "comments_#{post.id}">

我认为你需要这个

<div class="comments" id= "comments_<%= post.id %>">