所以我有一个嵌套资源属于发票的物品，我试图通过在创建/编辑发票时删除它来销毁物品。
我可以删除记录，但是当我这样做时，记录会从数据库中删除，但页面不会刷新或转到任何地方，但是当我手动刷新页面时，记录将被删除。我注意到在我的控制台中我得到了1500内部服务器错误，并且由于此错误而发生这种情况。
为嵌套资源编写destroy操作的最佳方法是什么？
ActionController::UrlGenerationError at /invoices/100/items/247
===============================================================
> No route matches {:action=>"index", :controller=>"items", :id=>"247", :invoice_id=>"100"}
app/controllers/items_controller.rb
``` ruby
44 end
45
46 def destroy
47 @item = Item.find(params[:id])
48 @item.destroy
>49 redirect_to :action => 'index'
50 end
这是我的佣金路线
$ rake routes
Prefix Verb URI Pattern Controller#Action
item_index GET /item/index(.:format) item#index
item_show GET /item/show(.:format) item#show
item_new GET /item/new(.:format) item#new
item_edit GET /item/edit(.:format) item#edit
invoice_item DELETE /invoices/:invoice_id/items/:id(.:format) items#destroy
invoices GET /invoices(.:format) invoices#index
POST /invoices(.:format) invoices#create
new_invoice GET /invoices/new(.:format) invoices#new
edit_invoice GET /invoices/:id/edit(.:format) invoices#edit
invoice GET /invoices/:id(.:format) invoices#show
PATCH /invoices/:id(.:format) invoices#update
PUT /invoices/:id(.:format) invoices#update
DELETE /invoices/:id(.:format) invoices#destroy
root GET /
完整物品控制器
class ItemsController < ApplicationController
def index
@items = Item.all
end
def show
@invoice = Invoice.find(params[:invoice_id])
@item = Item.find(params[:id])
end
def new
@item = Item.new
end
def edit
@item = Item.find(params[:id])
end
def create
@item = Item.new(item_params)
respond_to do |format|
if @item.save
format.html { redirect_to @item, notice: 'Item was successfully created.' }
format.json { render :show, status: :created, location: @item }
else
format.html { render :new }
format.json { render json: @item.errors, status: :unprocessable_entity }
end
end
end
def update
@item = Item.find(params[:id])
respond_to do |format|
if @item.update(item_params)
format.html { redirect_to @item, notice: 'Item was successfully updated.' }
format.json { render :show, status: :ok, location: @item }
else
format.html { render :edit }
format.json { render json: @i[item].errors, status: :unprocessable_entity }
end
end
end
def destroy
@item = Item.find(params[:id])
@item.destroy
redirect_to :action => 'index'
end
private
# Use callbacks to share common setup or constraints between actions.
def set_item
@item = Item.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def item_params
params.require(:item).permit(:item_name, :item_description, :item_cost, :item_quantity, :item_price, :destroy)
end
end
这是我的表格
<%= simple_form_for(@invoice) do |f| %>
<%= f.input_field :company, class: "form-control", id: "1" %>
<%= f.simple_fields_for :items do |h| %>
<div class="duplicatable_nested_form">
<h4>New item</h4>
<p>Name</p>
<%= h.input_field :item_name, class: "form-control" %>
<p>Description</p>
<%= h.input_field :item_description, class: "form-control" %>
<p>Cost</p>
<%= h.input_field :item_cost, class: "form-control cost", id: "price" %>
<p>Quantity</p>
<%= h.input_field :item_quantity, class: "form-control qty", id: "quantity" %>
<td></td>
<% if h.object.new_record? %>
<%= link_to 'Remove', '', :remote => true, :class => 'destroy_duplicate_nested_form' %>
<% else %>
<%= link_to 'Remove', invoice_item_path(@invoice, h.object), :method => :delete, :remote => true, :class => 'destroy_duplicate_nested_form' %>
<%= h.input :id, as: :hidden %>
<% end %>
<P class="price_td"><span class="price">650.00</span><span class="subtotal_currency"></span></P>
<% end %>
</div>
<%= link_to 'Add Another Item', '', :class => 'duplicate_nested_form' %>
<%= f.button :submit, 'Submit Payment', class: 'btn btn-warning btn-sm', id: "submit_invoice" %>
这是我的nested_forms.js.coffee
jQuery ($) ->
if $('.duplicatable_nested_form').length
nestedForm = $('.duplicatable_nested_form').last().clone()
.find("input:text").val("").end()
$(".destroy_duplicate_nested_form:first").remove()
$('.destroy_duplicate_nested_form').on 'click', (e) ->
$(this).closest('.duplicatable_nested_form').slideUp().remove()
$('body').on 'click','.destroy_duplicate_nested_form', (e) ->
$(this).closest('.duplicatable_nested_form').slideUp().remove()
$('.duplicate_nested_form').click (e) ->
e.preventDefault()
console.log("this is the click");
lastNestedForm = $('.duplicatable_nested_form').last()
newNestedForm = $(nestedForm).clone()
formsOnPage = $('.duplicatable_nested_form').length
$('#updatedAt').fadeOut('new')
$(newNestedForm).find('label').each ->
oldLabel = $(this).attr 'for'
newLabel = oldLabel.replace(new RegExp(/_[0-9]+_/), "_#{formsOnPage}_")
$(this).attr 'for', newLabel
$(newNestedForm).find('select, input').each ->
oldId = $(this).attr 'id'
newId = oldId.replace(new RegExp(/_[0-9]+_/), "_#{formsOnPage}_")
$(this).attr 'id', newId
oldName = $(this).attr 'name'
newName = oldName.replace(new RegExp(/\[[0-9]+\]/), "[#{formsOnPage}]")
$(this).attr 'name', newName
$( newNestedForm ).insertAfter( lastNestedForm )
我的路线
Rails.application.routes.draw do
get 'item/index'
get 'item/show'
get 'item/new'
get 'item/edit'
resources :invoices do
resources :items, only: :destroy
end
# The priority is based upon order of creation: first created -> highest priority.
# See how all your routes lay out with "rake routes".
# You can have the root of your site routed with "root"
root 'invoices#index'
答案 0 :(得分：1)
在_path
redirect
def destroy
@item = Item.find(params[:id])
@item.destroy
redirect_to item_index_path
end
<强>顺便说一句
非常奇怪的溃败：invoice_item DELETE /invoices/:invoice_id/items/:id(.:format) items#destroy
项目控制器中的invoice_item？破坏？