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Rails MVC 和 CRUD(14)

2023-03-20 14:49:13 时间

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在 controllers 中定义 destory 方法

然后在 index 视图中加入 Destroy 链接

[root@h202 blog]# vim app/controllers/articles_controller.rb 
[root@h202 blog]# cat app/controllers/articles_controller.rb 
class ArticlesController < ApplicationController
  def new
    @article = Article.new
  end
  def edit
    @article = Article.find(params[:id])
  end
  def update
    @article = Article.find(params[:id])
    if @article.update(article_params)
      redirect_to @article
    else
      render 'edit'
    end
  end
  def destroy
    @article = Article.find(params[:id])
    @article.destroy
    redirect_to articles_path
  end
  def create
#    render plain: params[:article].inspect
#    @article = Article.new(params[:article])
     @article = Article.new(article_params)
     
     if @article.save
       redirect_to @article
     else
       render 'new'
     end
  end
  def show
    @article = Article.find(params[:id])
  end
  def index
    @articles = Article.all
  end
  private
    def article_params
        params.require(:article).permit(:title,:text)
    end
end
[root@h202 blog]# vim app/views/articles/index.html.erb 
[root@h202 blog]# cat app/views/articles/index.html.erb 
<h1>Link test!!!!</h1>
<%= link_to 'My Blog', controller: 'articles' %>

<%= link_to 'New article', new_article_path %>
 
<table>
  <tr>
    <th>Title</th>
    <th>Text</th>
  </tr>
 
  <% @articles.each do |article| %>
    <tr>
      <td><%= article.title %></td>
      <td><%= article.text %></td>
      <td><%= link_to 'Show', article_path(article) %></td>
      <td><%= link_to 'Edit', edit_article_path(article) %></td>
      <td><%= link_to 'Destroy', article_path(article),method: :delete, data: { confirm: 'Are you sure?' } %></td>
    </tr>
  <% end %>
</table>
[root@h202 blog]#