额外的“你确定吗？”在销毁记录之前

Question

在我的某些表单上，我有一个额外的弹出确认“你确定吗？”在它真正破坏记录之前。我正在使用Rails 4和simple_form。这是一个例子。

我有一个名为Promotions的模型，另一个名为PromotionPurchase。

模特：

class Promotion < ActiveRecord::Base
  has_many :promotion_purchases, dependent: :destroy
end

class PromotionPurchase < ActiveRecord::Base
  belongs_to :user
  belongs_to :promotion
end

架构

create_table "promotion_purchases", force: true do |t|
  t.integer  "user_id"
  t.integer  "promotion_id"
  t.string   "status"
  t.string   "stripe_card_token"
  t.string   "phone"
  t.string   "full_name"
  t.datetime "created_at"
  t.datetime "updated_at"
end

add_index "promotion_purchases", ["promotion_id"], name: "index_promotion_purchases_on_promotion_id"
add_index "promotion_purchases", ["user_id"], name: "index_promotion_purchases_on_user_id"

create_table "promotions", force: true do |t|
  t.string   "name"
  t.text     "description"
  t.integer  "cost_in_cents"
  t.integer  "amount_available"
  t.string   "category"
  t.datetime "start_date"
  t.datetime "end_date"
  t.datetime "created_at"
  t.datetime "updated_at"
end

形式：

<div class="content-box">
<%= simple_form_for [:admin, @promotion] do |f| %>
  <fieldset id="promotion-form-info">
    <%= f.input :name %>
    <%= f.input :description %>
    <%= f.input :category %>
    <%= f.input :cost_in_cents, as: :string %>
    <%= f.input :amount_available, as: :string %>
    <%= f.input :start_date, :as => :date_picker %>
    <%= f.input :end_date, :as => :datetime_picker %>
    <%= f.button :submit, class: 'btn btn-sm btn-success' %>
  </fieldset>
<% end %>
<% if @promotion.id != nil %>
  <fieldset id="promotion-form-purchases">
    <h3>Purchases:</h3>
    <% if !@purchases.empty? %>
      <table class="table">
        <tr>
          <th>Name</th>
          <th>Email</th>
          <th>Phone</th>
          <th>Status</th>
          <th></th>
        </tr>
        <% @purchases.each do |purchase| %>
          <tr>
            <td><%= purchase.full_name %></td>
            <td><%= purchase.user.email if purchase.user %></td>
            <td><%= purchase.phone %></td>
            <td><%= purchase.status %></td>
            <td>
              <%= link_to "Edit", edit_admin_promotion_promotion_purchase_path(@promotion, purchase), class: "btn btn-xs btn-success" %>
              <%= link_to 'Delete', [:admin, @promotion, purchase], method: :delete, data: { confirm: 'Are you sure?' }, class: "btn btn-xs btn-danger" %> 
              <%= "<- Editing this purchase" if @purchase && purchase.id == @purchase.id %>
            </td>
          </tr>
        <% end %>
      </table>
    <% end %>
    <p>
      <%= link_to "Add Purchase", new_admin_promotion_promotion_purchase_path(@promotion), class: "btn btn-sm btn-primary" %>
    </p>
  </fieldset>
<% end %>
</div>

和控制器

class Admin::PromotionPurchasesController < ApplicationController
  layout 'admin'
  before_action :set_promotion
  before_action :set_purchase, only: [:edit, :update, :destroy]

  def destroy
    @purchase.destroy
    redirect_to new_admin_promotion_promotion_purchase_path(@promotion), success: 'PromotionPurchase was deleted.'
  end

  private

    def set_promotion
      @promotion = Promotion.find(params[:promotion_id])
    end

    def set_purchase
      @purchase = PromotionPurchase.find(params[:id])
    end
end

为什么我看到“你确定吗？”当我从表单中销毁PromotionPurchase以编辑促销时，两次而不是仅一次？

在这种情况下，我看了三次：

Answer 1

您发布的代码似乎没问题。

我认为问题来自javascript。 （检查控制台，你可能会看到那里的东西）

您也可以多次导入jquery_ujs，尝试从jquery_ujs中移除application.js并查看是否有任何问题，如果只导入一次，则不应该获得该对话框

Answer 2

尝试在表单中放一个简单的<script>，并在那里发出警报。如果该警报提醒3次，那么您的问题是加载文件的次数太多了。