grails - 如何在 Grails 中隐藏 URL 参数

Question

当用户创建新的 Load 对象时，如果用户选中“Paid On Delivery”复选框，那么他们将在创建新的 Load 对象后立即重定向到 Payment Controller 新的 Load 已创建。创建新的 Load 所需的几个参数也用于创建新的 Payment，因此我只需在重定向中传递参数，如下所示:

redirect(controller: "payment", action: "create", params: params)

这工作正常，但它给了我一个真正令人讨厌的 URL，其中包含所有参数。 如何将我的参数传递给另一个 Controller 并防止它们出现在 URL 中？

更新:

我应该说，我很感谢大家针对这么一个小问题提出的建议。即使有所有建议，最好的方法似乎仍然是我想要避免的方法，即在 redirect 调用中手动构建参数映射。这没什么大不了的，特别是因为只有几个参数，我只是不相信没有更干净、更自动化的方法来解决这个问题。

    def loadInstance = new Load(params)

    if (loadInstance.save(flush: true)) {
        Account.get(params.account.id).balance -= new BigDecimal(params.transactionAmount) 
        flash.message = "${message(code: 'default.created.message', args: [message(code: 'load.label', default: 'Load'), loadInstance.id])}"
        if(params.paidOnDelivery){
            redirect(
                controller: "payment",
                action: "create",

                //There has to be a better way than this. Just writing "params:params" results in the values being wrapped in double quotes once they get to the Payment controller. If it wasn't for that then "params:params" would work great and I would not of had to ask this question :)
                params: [
                    "account.id":params.account.id,
                    "dateOfTransaction":params.dateOfTransaction,
                    "dateOfTransaction_year":params.dateOfTransaction_year,
                    "dateOfTransaction_month":params.dateOfTransaction_month,
                    "dateOfTransaction_day":params.dateOfTransaction_day,
                    "dateOfTransaction_hour":params.dateOfTransaction_hour,
                    "dateOfTransaction_minute":params.dateOfTransaction_minute,
                    "transactionAmount":params.transactionAmount
                ]
            ) 
            return
        }
        redirect(action: "show", id: loadInstance.id)
    }
    else {
        render(view: "create", model: [loggedByUsers:loggedByUsers, accounts:accounts, cargoProviders:cargoProviders, deliveredByUsers:deliveredByUsers, loadInstance:loadInstance])
    }

Answer 1

您可以执行服务器端转发而不是重定向。只需替换:

redirect(controller: "payment", action: "create", params: params)

与:

forward(controller: "payment", action: "create", params: params)

更新

要解决您在评论中描述的刷新问题，请使您转发的操作发送重定向(而不是呈现 View )，例如

class PaymentController {

  def create = {

    Integer paymentId = // Create a payment and get it's ID    
    redirect(action: 'show', id: paymentId)    
  }

  def show = {
    def id = params.id
    // show the payment with this ID
  }
}