以ember访问浏览历史记录 [英] Access browsing history in ember

问题描述

我有以下两条路径来编辑我的应用程序中的对象（节点）：

I have the following two paths to edit an object (node) in my application:

1. 列表节点 - >点击编辑图标


2. 列出节点 - >选择节点 - >点击编辑按钮

我可以选择取消编辑。当我取消，我想要路由器（控制器？）返回到正确的地方。也就是说，如果我来自节点列表，我想取消返回到节点列表（ #nodes ）。如果我来自节点视图，我想取消返回到节点视图（＃nodes / show / node-id ）。目前这是我的 NodesEditController 中的实现：

I have the option to cancel the editing. When I cancel, I want the router (controller?) to go back to the right place. That is, if I came from the list of nodes, I want cancel to go back to "list of nodes" (#nodes). If I came from the node view, I want cancel to go back to the node view (#nodes/show/node-id). Currently this is the implementation in my NodesEditController:

SettingsApp.NodesEditController = Ember.ObjectController.extend({
    needs: ['nodesIndex'],
    selectedNode: null,
    selectedNodeType: null,
    nodes: [],
    ...
    cancel: function () {
        this.stopEditing();
        this.transitionToRoute('nodes.show', this.get('content'));
    },

    ...
});

如您所见，的路线取消动作是固定的（ nodes.show ）。但是在第一种情况下，我想做 this.transitionToRoute（'nodes.index'）; 。所以我的取消方法必须是这样的：

As you can see, the route for the cancel action is fixed (nodes.show). But in the first case, I would like to do this.transitionToRoute('nodes.index');. So my cancel method must be something like this:

 cancel: function () {
    this.stopEditing();
    if (some_test) { this.transitionToRoute('nodes.show', this.get('content'));
    } else { this.transitionToRoute('nodes.index'); }
 }

如何实现 some_test ？

推荐答案

重新打开 Ember.Route 在路线退出时存储 currentPath ：

Reopen Ember.Route to store the currentPath when a route is exited:

Ember.Route.reopen({
  deactivate: function() {
    var applicationController = this.controllerFor('application');
    App.previousPath = applicationController.get('currentPath');
  }
});

然后在您的取消方法中：

Then in your cancel method:

goBack: function () {
    if (SettingsApp.previousPath == 'nodes.show') {
        this.transitionToRoute(SettingsApp.previousPath, this.get('content'));
    } else {
        this.transitionToRoute(SettingsApp.previousPath);
    }
},

cancel: function () {
    this.stopEditing();
    this.goBack();
},

注意：您可能希望提供一些备用，以防应用程序加载在 nodes.edit 路线。

Note: you might want to provide some fallback in case the app is loaded in the nodes.edit route.

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