Question

我的 Admin :: StylesController increase_order 和 decrease_order ，出现 RecordNotFound 错误>，但基本行动运作良好。

Ruby版本：

ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-linux]

Rails版本：

Rails 4.1.4

这是我的错误：

ActiveRecord::RecordNotFound (Couldn't find Style without an ID):
  app/controllers/admin/styles_controller.rb:50:in `set_style'

这是我的控制器：

class Admin::StylesController < Admin::ApplicationController

  before_action :set_style, only: [:show, :edit, :update, :destroy, :increase_order, :decrease_order]

  def index
    @styles = Style.all
  end

  def new
    @style = Style.new
  end

  def edit
  end

  def create
    @style = Style.new(style_params)

    if @style.save
      redirect_to admin_styles_url, notice: 'Style was successfully created.'
    else
      render action: 'new'
    end
  end

  def update
    if @style.update(style_params)
      redirect_to admin_styles_url, notice: 'Style was successfully updated.'
    else
      render action: 'edit'
    end
  end

  def destroy
    @style.destroy
    redirect_to admin_styles_url, notice: 'Style was successfully destroyed.'
  end

  def increase_order
    @style.update_attribute(:order, @style.order += 1)
    redirect_to admin_styles_url
  end

  def decrease_order
    @style.update_attribute(:order, @style.order -= 1)
    redirect_to admin_styles_url
  end

  private
    def set_style
      @style = Style.find(params[:id])
    end

    def style_params
      params.require(:style).permit(:name, :order, :cover)
    end
end

以下是我的观点：

%h3 Liste des Styles

%table.table.table-striped.table-condensed
  - @styles.each do |style|
    %tr
      %td= style.name

      %td= style.order

      %td.btn-group.btn-group-xs  # These two links work well.
        = link_to edit_admin_style_path(style), :class => 'btn btn-primary' do
          %span.glyphicon.glyphicon-pencil
        = link_to [:admin, style], :method => :delete, :data => { :confirm => 'Voulez-vous supprimer ce style ?' }, :class => 'btn btn-primary' do
          %span.glyphicon.glyphicon-remove

      %td.btn-group.btn-group-xs  # These two links return a RecordNotFound error.
        = link_to admin_style_increase_order_path(style), :class => 'btn btn-primary' do
          %span.glyphicon.glyphicon-arrow-up
        = link_to admin_style_decrease_order_path(style), :class => 'btn btn-primary' do
          %span.glyphicon.glyphicon-arrow-down

= link_to new_admin_style_path, :class => 'btn btn-primary btn-sm' do
  %span.glyphicon.glyphicon-plus
  Nouveau style

这是我的routes.rb：

Rails.application.routes.draw do

  root 'welcome#index'

  namespace :admin do
    root 'dashboard#index'
    resources :styles do
      get 'increase_order'
      get 'decrease_order'
    end
  end

end

提前感谢您的协助。

Answer 1

您的increase_order和decrease_order操作应定义为资源路由的成员操作（因此您获得id param）：

resources :styles do
  member do
    get :increase_order
    get :decrease_order
  end
end

并且在视图中，要链接到这些操作：

link_to [:increase_order, :admin, style], :class => 'btn btn-primary' do

和

link_to [:decrease_order, :admin, style], :class => 'btn btn-primary' do

我还建议您可以通过post或put而不是get HTTP方法访问这些操作。

为什么我的自定义RESTful操作会出现ActiveRecord :: RecordNotFound错误？

1 个答案: