清除会话数据

Question

在我看来我有一个按钮使用 simple_form gem:

  <%= simple_form_for(:place_order, :url => "#{}", html: {id: "place_order" }) do |f|  %>
    <%= f.button :button, "Clear Cart", class: "btn btn-primary clearcart", id: "clear_cart", name: "clear_cart" %>
    <%= f.button :submit, "Continue Shopping", class: "btn btn-success contShop", id: "continue_shopping", name: "continue_shopping" %>
    <%= f.button :submit, "Proceed to Checkout", class: "btn btn-danger checkout", id: "proceed_to_checkout", name: "proceed_to_checkout" %>
  <% end %>

我的CoffeeScript如下：

jQuery ->
  $('button#clear_cart.btn.btn.btn-primary.clearcart').on 'click', (event) ->
    $.post '/shopping/clear_cart'
  $('input#continue_shopping.btn.btn-success.contShop').on 'click', (event) ->
    $('#place_order').attr 'action', '/shopping'
  $('input#proceed_to_checkout.btn.btn-danger.checkout').on 'click', (event) ->
    $('#place_order').attr 'action', '/shopping/place_order'
  $('input#place_an_inquiry.btn.btn-danger.checkout').on 'click', (event) ->
    $('#place_order').attr 'action', '/shopping/review_order'

我的 clear_cart 来自控制器的操作如下：

def clear_cart
  session[:product_quantity] = nil
  redirect_to shopping_index_path
end

单击 clear_cart 按钮时出现 JavaScript 错误，其中 clear_cart 操作不可用，因为我已经将其添加到路由文件中。

  resources :shopping, :only => [:index] do
    collection do
      .....
      get   :clear_cart
      post  :clear_cart
    end
  end

我在这里做错了什么，它没有清除会话数据，return我要更正区域？

Answer 1

顺便说一下，您应该让 rails 进行清除并改为通过 JS 重定向。

我会选择这样的东西：

路线

resources :shopping, :only => [:index] do
  collection do
    .....
    post  :clear_cart
  end
end

控制器

def clear_cart
  session.delete(:product_quantity)
  render json: {success: true, url: shopping_index_path}
end

js

$('button#clear_cart.btn.btn.btn-primary.clearcart').on 'click',    (event) ->
  $.post '/shopping/clear_cart'.success(response) ->
    window.location = response.url

Answer 2

正如我对 nesiseka 的评论中提到的，我无法按照他建议的方式进行操作，因此我继续采用以下解决方案。

控制器：

def clear_cart
  session.delete(:product_quantity)
  if request.post?
    redirect_to shopping_index_path
  end
end

查看：

    <%= simple_form_for(:place_order, :url => "#{}", html: {id: "place_order" }) do |f| %>
    <%= f.button :submit, "Clear Cart", class: "btn btn-primary clearcart", id: "clear_cart", name: "clear_cart" %>
    <%= f.button :submit, "Continue Shopping", class: "btn btn-success contShop", id: "continue_shopping", name: "continue_shopping" %>
    <%= f.button :submit, "Proceed to Checkout", class: "btn btn-danger checkout", id: "proceed_to_checkout", name: "proceed_to_checkout" %>
    <% end %>

咖啡脚本：

jQuery(document).ready ->
  $('input#clear_cart.btn.btn-primary.clearcart').on 'click', (event) ->
    $('#place_order').attr 'action', '/shopping/clear_cart'

清除会话数据

Clearing Session data

javascript

ruby-on-rails

coffeescript

ruby-on-rails-4