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在我的联系人列表 CRUD 应用程序中，当我键入以下 URL 时，所有联系人都会正确显示：localhost/contact

但是，我希望每个联系人有两个选项 - 更新信息或删除记录。因此，一旦我点击联系人，比如说“Chetan”，我想进入一个带有两个选项的“showmain”页面——更新（将我链接到更新页面）和删除（将我链接到删除页面）。

我的控制器如下：-

class ContactController < ApplicationController

  def index
    @contacts=Contact.find(:all)

      respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @contacts }
    end
  end


  def show
    @contact=Contact.find(params[:id])
  end

  def del
    @contact=Contact.find(params[:id])
  end

  def new
    @contact=Contact.new
  end

  def create
     @contact=Contact.new(params[:contact])
    if @contact.save!
      redirect_to :action => "index"
    else
      render :action => "new"
    end
  end

  def showmain

      respond_to do |format|
      format.html # index.html.erb
      format.json 
  #  @contact=Contact.new(params[:contact])
  end

  def update
    @contact=Contact.find(params[:id])
    @contact.attributes= params[:contact]
    @contact.save!
    redirect_to :action => "index" 
  end

  def delete
    @contact=Contact.find(params[:id])
    @contact.destroy
    redirect_to :action => "index"
  end
  end
  end

我的 showmain.html.erb 页面出现语法错误（showmain.html.erb:14: syntax error, unexpected keyword_ensure, expecting $end）如下：-

<h1>Do you want to Update or Delete the Attributes? </h1>

<ul>
    <li>
        <%= link_to "Update" ,:action=>'show',:id => @contact -%>
    </li>

    <li>
        <%= link_to "Delete" ,:action=>'del',:id => @contact -%>
    </li>   
</ul>
<% end %>

<p>
    <%= link_to "Back", {:action => 'index'} -%>
</p>

需要一些帮助来消除错误..

我的 show.html.erb 如下：-

<h1>View/Edit Contact</h1>

 <% link_to "Update" , contact_path(@contact) do |f| -%

  <%= f.label :first_name %>:
  <%= f.text_field :first_name %><br />

  <%= f.label :last_name %>:
  <%= f.text_field :last_name %><br />

  <%= f.label :address %>:
  <%= f.text_field :address %><br />


  <%= f.label :city %>:
  <%= f.text_field :city %><br />


  <%= f.label :state %>:
  <%= f.text_field :state %><br />


  <%= f.label :country %>:
  <%= f.text_field :country %><br />


  <%= f.label :phone %>:
  <%= f.text_field :phone %><br />


  <%= f.label :email %>:
  <%= f.text_field :email %><br />

  <%= f.submit "Update" %>

<% end %>

<p>
    <%= link_to 'Back', {:action => 'index'} %>
</p>
4

1 回答 1

0 
def showmain

  respond_to do |format|
      format.html # index.html.erb
      format.json 
      #  @contact=Contact.new(params[:contact])
  end #Close respond_to
end # Close the showmain
于 2012-05-08T19:56:03.863 回答