Rails 应用程序 Ruby 中的后退按钮跳过页面

Question

我发现很多一般性的帖子暗示这与重定向有关。我相信这可能是由于我设置表格的方式所致。

在 plans.html.erb 页面上，我有一个包含四个提交的表单，每个提交到同一个地方，但参数不同：

<%= form_with url: :affiliate_select_plan, class: "mx-auto" do |f|  %>

    <!-- Paid Plans -->
    <% @plans.each_with_index do |plan, i| %>
        <%= f.button 'Select Plan', value: plan[:name], type: 'submit' %> 

    <% end %>
<% end %>

我的 routes.rb 中有 affiliate_select_plan_path 设置：

devise_scope :affiliate do
  post 'affiliate/select_plan', :to => 'affiliates/registrations#select_plan'
end

表单成功命中控制器中的 select_plan 方法，该方法将其重定向到 new_affiliate_registration_path，并传递所需的参数。

def select_plan
    redirect_to new_affiliate_registration_path(plan: plan_params[:button])
end

调用控制器中的 new 方法，将用户定向到注册页面：

# GET /resource/sign_up
def new
    @plan = AffiliatePlan.find_by(nickname: params.permit(:plan)[:plan].downcase)
    super
end

在此页面上，如果选择浏览器上的后退按钮，用户将返回到 plans.html.erb 之前所在的页面。

这是否与 redirect_to 有关？

编辑：

这是日志：

Started GET "/" for 127.0.0.1 at 2020-02-25 19:06:02 -0500
Processing by Affiliates::RegistrationsController#plans as HTML
  Rendering affiliates/registrations/plans.html.erb within layouts/application
  Rendered affiliates/registrations/plans.html.erb within layouts/application (5.2ms)
  Rendered layouts/_google_analytics.html.erb (0.5ms)
[Webpacker] Everything's up-to-date. Nothing to do
  Rendered layouts/_header.html.erb (1.2ms)
  Rendered layouts/_footer.html.erb (0.7ms)
Completed 200 OK in 195ms (Views: 194.2ms | ActiveRecord: 0.0ms)


Started POST "/partner/select_plan" for 127.0.0.1 at 2020-02-25 19:06:13 -0500
Processing by Affiliates::RegistrationsController#select_plan as JS
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"Ck8HGRryriXleQrUjCSKjTrIRLIw273EdSu4WZnFn3kAL1mMmk7jqR1tZgnPniHsMzHFMl81vPBRuvA0/W4uSw==", "button"=>"Local"}
Unpermitted parameters: :utf8, :authenticity_token
Redirected to http://localhost:3000/partners/sign_up?plan=Local
Completed 200 OK in 1ms (ActiveRecord: 0.0ms)


Started GET "/partners/sign_up?plan=Local" for 127.0.0.1 at 2020-02-25 19:06:13 -0500
Processing by Affiliates::RegistrationsController#new as HTML
  Parameters: {"plan"=>"Local"}
  AffiliatePlan Load (1.2ms)  SELECT  "affiliate_plans".* FROM "affiliate_plans" WHERE "affiliate_plans"."nickname" =  LIMIT   [["nickname", "local"], ["LIMIT", 1]]
  ↳ app/controllers/affiliates/registrations_controller.rb:11
  Rendering affiliates/registrations/new.html.erb within layouts/application
  Rendered affiliates/registrations/new.html.erb within layouts/application (4.6ms)
  Rendered layouts/_google_analytics.html.erb (1.1ms)
[Webpacker] Everything's up-to-date. Nothing to do
  Rendered layouts/_header.html.erb (1.2ms)
  Rendered layouts/_footer.html.erb (0.7ms)
Completed 200 OK in 191ms (Views: 187.6ms | ActiveRecord: 1.2ms)

Answer 1

我预感这可能与重新提交表单有关：表单和后退按钮有时有点不稳定。

但是，让我为您指出另一个方向，而不是更深入地讨论这个问题。我这样做是因为对我来说，这看起来像是有人试图找到错误问题的解决方案的经典案例。我之所以这样说，是因为根据您提供的代码和日志片段，您正在通过多个操作跳过箍来传递参数（在您的情况下是计划的名称）——如果我是对的，只是不必要的。

我会这样做：

<% @plans.each do |plan| %>
  <%=
    link_to 'Select Plan',
    new_affiliate_registration_path(plan: plan.downcase),
    class: 'some-button-class
  %>
<% end %>

这样，您就不必以任何方式弄乱您的控制器。此外，由于没有 POST 请求，您不会对表单（重新）填充等问题有任何问题。

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编辑：