Rails通过复选框销毁多条记录

Question

我的问题和他的Rails 3 destroy multiple record through check boxes很相似

它显示了这个错误

Couldn't find Ticket with id=destroy_multiple

所以我就这样修改了代码

在routes.rb

 resources :tickets do
   collection do
     delete 'destroy_multiple'
   end
 end

In mod.html.erb

<%= form_tag destroy_multiple_mods_path, method: :delete do %>
  <div class="CSSTableGenerator" >
    <table >
      <tr>
        <td>Delete</td>
        <td>Edit</td>
        <td>Detail</td>
        <td>Material_Code</td>
        <td>Material_Name</td>
        <td>Material_Type</td>
        <td>Unit</td>
        <td>Storage_Lowerlimit</td>
        <td>Storage_Upperlimit</td>
        <td>Material_Unit_price</td>
        <td>Material_Balance</td>
        <td>Material_Total_value</td>
        <td>Material_Producer</td>
        <td>Material_Location</td>
      </tr>
      <% @mods.each do |mods| %>  

      <tr>
        <td><%= check_box_tag "mods_ids[]", mods.id %></td>
        <td><%= link_to "edit",  edit_mod_path(mods.id) %></td>
        <td><%= link_to 'detail', mod_path(mods.id)%></td> 
        <td><%=mods.code %></td>
        <td><%=mods.name %></td>
        <td><%=mods.version %></td>
        <td><%=mods.unit %></td>
        <td><%=mods.lowerlimit %></td>
        <td><%=mods.upperlimit %></td>
        <td><%=mods.unitprice%></td>
        <td><%=mods.totality %></td>
        <td><%=mods.totalprice %></td>
        <td><%=mods.producer %></td>
        <td><%=mods.storage %></td>
      </tr>
      <% end %>
    </table>
  </div>
  <%= submit_tag "Delete selected" %>
<% end %>

在控制器中

def destroy_multiple
  Mod.destroy(array_of_ids)
  respond_to do |format|
  format.html { redirect_to mods_path }
  format.json { head :no_content }
  end
end

在模型中

class Mod < ActiveRecord::Base
  acts_as_xlsx

  attr_accessible  :name ,:code, :lowerlimit, :producer, :storage, :totality, :totalprice,   :version, :unit, :unitprice, :upperlimit

  has_many :feedbacks, dependent: :destroy
  has_and_belongs_to_many :products

  validates :upperlimit, presence: true
  validates :lowerlimit, presence: true
  validates :name, presence: true
  validates :code, presence: true
  validates :code, presence:   true, uniqueness: { case_sensitive: false }
end


def destroy
  Mod.find(params[:mods_ids]).destroy
  flash[:success] = "Material destroyed."
  redirect_to mods_url
end

现在，当我删除多个记录时，出现了新的错误

NoMethodError in ModsController#destroy

 undefined method `destroy' for #<Array:0x2bf8678>

我接受市场的建议，这是第二个错误

Parameters:

{"utf8"=>"✓",
 "_method"=>"delete",
 "authenticity_token"=>"Z8awZYzgdGXK5eptpe1Erxow3yBGqQU9r+8j2NW4L5M=",
 "mods_ids"=>["14",
 "15"],
 "commit"=>"Delete selected",
 "id"=>"destroy_multiple"}

Answer 1

你可以尝试：

def destroy_multiple
  Mod.destroy_all(id: params[:mods_ids])

  respond_to do |format|
    format.html { redirect_to mods_path }
    format.json { head :no_content }
  end
end

它类似于：

Mod.where(id: params[:mods_ids]).destroy_all

不要忘记定义正确的路由(注意:mods而不是:tickets)：

resources :mods do
  collection do
    delete 'destroy_multiple'
  end
end

Answer 2

事实表明，我的破坏方法是不必要的。当我删除它并注释route.rb中的重复资源方法时，可以解决问题。

 # resources :mods
 resources :mods do
   collection do
    delete 'destroy_multiple'
   end
 end