如何实现“取消"VisualForce 页面中的功能 [英] How to implement "Cancel" functionality in a VisualForce Page

问题描述

我知道这是如何保存记录

I know that this is how to save a record

<apex:commandButton action="{!save}" value="Save"/>

我想要一个不保存当前记录(即取消)并导航到已保存记录列表(即该对象类型的对象列表)的按钮.

I want a button to NOT save the current record (ie. Cancel) and navigate to the list of saved record (ie. list of objects for that object type).

这样的东西...

<apex:commandButton action="{!cancel}" value="Cancel"/>

推荐答案

对象的列表视图是您的基本 URL/对象的 3 个字母前缀/o，例如:

The list view for an object is your base URL / the 3 letter prefix for your object / o, for example:

https://na1.salesforce.com/a0C/o

因此，您可以创建一个操作方法，该方法返回带有适当 URL 的 Pagereference 并设置为重定向 (pr.setRedirect(true)).

So you could just create an action method that returns a Pagereference with the appropriate URL and set to redirect (pr.setRedirect(true)).

或者，您可以将控制器用作标准控制器的扩展，只需 在标准控制器上取消调用:

Alternatively, you could use your controller as an extension to a standard controller, and just call cancel on the standard controller:

// controller extension
public class TimeSheetExtension
{
  ApexPages.standardController m_sc = null;

  public TimeSheetExtension(ApexPages.standardController sc)
  {
    m_sc = sc;
  }

  public PageReference doCancel()
  {
    return m_sc.cancel();
  }
}

// page
<apex:commandButton action="{!doCancel}" value="Cancel"/>

请注意，这不一定会将您带到列表视图，它会返回到您在前往 VF 页面之前查看的最后一页.

Note that this doesn't necessarily take you to the list view, it'll return you to the last page you were viewing before going to the VF page.

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