在{:locale=>[:en]，:formats=>[:html]，:variants=>[]，:handlers=>[:raw，:erb，:html，:builder，：：formats=>，:jbuilder] }中缺少部分注释/_comment

Question

因为我对Ruby很陌生。在运行localhost URL之后，我将得到这个错误。为了这条线。它位于show.html.erb文件中。

<%= render @article.comments %>

Showing D:/RailProject/App/app/views/articles/show.html.erb where line #14 raised:

Missing partial comments/_comment with {:locale=>[:en], :formats=>[:html], :variants=>[], :handlers=>[:raw, :erb, :html, :builder, :ruby, :jbuilder]}.

Searched in:
  * "D:/RailProject/App/app/views"
  * "C:/Ruby31-x64/lib/ruby/gems/3.1.0/gems/actiontext-7.0.3/app/views"
  * "C:/Ruby31-x64/lib/ruby/gems/3.1.0/gems/actionmailbox-7.0.3/app/views"

我在comments_controller.rb中有以下代码：

class CommentsController < ApplicationController
    http_basic_authenticate_with name: "dhh", password: "secret", only: :destroy
    def create
      @article = Article.find(params[:article_id])
      @comment = @article.comments.create(comment_params)
      redirect_to article_path(@article)
    end
  
    def destroy
      @article = Article.find(params[:article_id])
      @comment = @article.comments.find(params[:id])
      @comment.destroy
      redirect_to article_path(@article), status: 303
    end

    def show
      @article = Article.find(params[:article_id])
      @comment = @article.comments.find(params[:id])
      @comment.destroy
      redirect_to article_path(@article)
    end
  
    private
      def comment_params
        params.require(:comment).permit(:commenter, :body, :status)
      end end

我在show.html.erb中有以下代码：

<h1><%= @article.title %></h1>

<p><%= @article.body %></p>

<ul>
  <li><%= link_to "Edit", edit_article_path(@article) %></li>
  <li><%= link_to "Destroy", article_path(@article), data: {
                    turbo_method: :delete,
                    turbo_confirm: "Are you sure?"
                  } %></li>
</ul>

<h2>Comments</h2>
<%= render @article.comments %>

<h2>Add a comment:</h2>
<%= render 'comments/form' %>

我有_comments.html.erb：

<p>
  <strong>Commenter:</strong>
  <%= comment.commenter %>
</p>

<p>
  <strong>Comment:</strong>
  <%= comment.body %>
</p>

<p>
  <%= link_to "Destroy Comment", [comment.article, comment], data: {
                turbo_method: :delete,
                turbo_confirm: "Are you sure?"
              } %>
</p>

Answer 1

您需要创建一个名为app/views/comments/_comment.html.erb的文件，这样Rails就可以使用它来呈现每个注释。这就是您在编写<%= render @article.comments %>时要求它做的事情。对于传递给render的集合中的每个元素，Rails将尝试呈现一个分部，到该部分的路径是从模型的名称派生出来的。

如果@article.comments包含3个If为1, 2, 3的记录，如果您的app/views/comments/_comment.html.erb包含以下内容.

<h1>Comment <%= comment.id %></h1>

然后Rails将对每个注释进行三次呈现，并生成以下内容：

<h1>Comment 1</h1>
<h1>Comment 2</h1>
<h1>Comment 3</h1>