请注意,我认为此问题与 Backbone 或 JavaScript 无关,但有必要包含一些 Backbone 代码作为该问题的上下文。
相关代码
我有一个客户端骨干路由器,其路由采用名为contactId
. 它看起来类似于:
Backbone.Router.extend({
routes: {
"jobs/new?contact_id=:contactId": "newForContact"
},
// Fetch the contact and initialize a new job model which
// is associated with that contact.
newForContact: function(contactId) {
var contact = new Contact(id: contactId);
contact.fetch({
success: _.bind(function(model, resp) {
var job = new Job(contact: contact);
this.new(job);
}
}, this));
},
// Show the JobView for the given job.
new: function(jobModel) {
view = new JobView(job: jobModel);
$('body').append(view.render().el);
}
};
现在我正在尝试在pushState
打开的情况下使用此设置。
当我击中触发路线的newForContact
路线时,一切都按预期工作。但是,如果此时我按下浏览器的后退按钮,我会contact.fetch()
直接从浏览器的缓存中获得来自该方法的 JSON 响应。没有请求发送到服务器。
应用程序日志
您可以在 Rails 应用程序日志中看到这一点。在这一部分中,我访问了触发的路线newForContact
。
Started GET "/jobs/new?contact%5Bid%5D=1&contact%5Btype%5D=Customer" for 127.0.0.1 at 2012-10-31 22:41:48 +0000
Processing by JobsController#new as HTML
Parameters: {"contact"=>{"id"=>"1", "type"=>"Customer"}}
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]]
Business Load (0.3ms) SELECT "businesses".* FROM "businesses" WHERE "businesses"."id" IN (1)
Rendered shared/_search_form.html.erb (0.3ms)
Job Load (0.4ms) SELECT "jobs".* FROM "jobs" WHERE "jobs"."business_id" = 1 ORDER BY created_at desc
Rendered jobs/_list.html.erb (1.5ms)
Rendered jobs/index.html.erb within layouts/application (4.1ms)
Rendered layouts/_head_content.html.erb (0.7ms)
Rendered layouts/_flash.html.erb (0.0ms)
Cache read: views/jobs/main_nav/d6a805d9b6f285e424f207add4f35595
Read fragment views/jobs/main_nav/d6a805d9b6f285e424f207add4f35595 (0.4ms)
Rendered layouts/_nav.html.erb (0.6ms)
Rendered layouts/_header.html.erb (0.7ms)
Completed 200 OK in 12ms (Views: 8.0ms | ActiveRecord: 1.0ms)
Cache read: http://print.dev/customers/1?
您可以看到它此时使用 JSON 请求获取联系人。
Started GET "/customers/1" for 127.0.0.1 at 2012-10-31 22:41:48 +0000
Processing by CustomersController#show as JSON
Parameters: {"id"=>"1"}
User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]]
Business Load (0.4ms) SELECT "businesses".* FROM "businesses" WHERE "businesses"."id" IN (1)
Customer Load (0.2ms) SELECT "customers".* FROM "customers" WHERE "customers"."business_id" = 1 AND "customers"."id" = $1 LIMIT 1 [["id", "1"]]
CustomerEmployee Load (0.3ms) SELECT "customer_employees".* FROM "customer_employees" WHERE "customer_employees"."employer_id" IN (1)
Job Load (0.4ms) SELECT "jobs".* FROM "jobs" WHERE "jobs"."contact_type" = 'Customer' AND "jobs"."contact_id" IN (1)
Invoice Load (0.3ms) SELECT "invoices".* FROM "invoices" WHERE "invoices"."client_id" IN (1)
Job Load (0.5ms) SELECT "jobs".* FROM "jobs" WHERE "jobs"."contact_id" = 1 AND "jobs"."contact_type" = 'Customer' AND "jobs"."state" = 'finished' AND "jobs"."invoice_id" IS NULL
Rendered customers/show.json.rabl (2.8ms)
Completed 200 OK in 67ms (Views: 3.2ms | ActiveRecord: 2.5ms)
此时,我会按下浏览器的后退按钮,但服务器上没有记录新请求。
Rails 环境
这只发生在我的登台服务器(Heroku)上,而不是在开发中。我可以通过在暂存环境中使用Pow运行应用程序来在本地重新创建它,该环境在 rails 配置中打开了缓存。
config.action_controller.perform_caching = true
请注意,即使打开了缓存,我也无法在开发环境中重新创建错误。
此问题发生在Chrome 22.0.1229.94
和FF 16.0.2
中Safari 6.0.1
。我正在使用 Rails 3.2.8
。
可能相关的问题
现场样品
如果你真的想要,你可以在我的 Heroku 登台服务器上实时查看问题。
复制步骤(编辑:自从我修复了问题以来,这些不再起作用)。
- 使用电子邮件在此处登录:user@example.com 并通过:foobar
- 访问http://print-staging.herokuapp.com/customers/2。您应该会看到一个看起来很乱的对话框打开。
- 单击对话框中的“新作业”小链接。页面应该改变并且应该打开一个新对话框。
- 单击浏览器后退按钮。