拒绝承诺 Angular ui-router 后的 $state 转换
在初始化控制器之前，我正在使用 Angular ui-router 并为我的一种状态设置了解析功能.我检索一些数据，循环并匹配 URL stateParam，如果找到匹配项，则将 promise 解析给控制器并在 promise 中返回该对象.这一切都很好.
I'm using Angular ui-router and have a resolve function set up for one of my states, before the controller is initialized. I retrieve some data, loop through and match it up the URL stateParam, and if a match is found, resolve the promise to the controller and return that object in the promise. That's all working well.
但是，如果找不到匹配项，我只想通过拒绝承诺并运行 $state.go('state');
However, if a match isn't found I simply want to redirect to a different state by rejecting the promise and running $state.go('state');
简单地说:
deferred.reject();
$state.go('state',{params: 'param'});
但这似乎没有任何作用.控制器只是挂起，我没有得到任何控制台错误或任何东西.有什么想法吗?
But this doesn't seem to do anything. The controller just hangs, and I get no console errors or anything. Any ideas?
这个问题适用于 0.xx 版本，很多东西在 1.xx 版本中发生了变化
推荐答案
如果路由解析被拒绝，ui-router 应该抛出 $stateChangeError.你需要注意这个事件，并在那里触发你的状态转换.
ui-router is supposed to throw a $stateChangeError if a route resolve is rejected. You need to watch for this event, and trigger your state transition there.
根据维基:
$stateChangeError - 在转换过程中发生错误时触发.重要的是要注意，如果您的解析函数中有任何错误(javascript 错误、不存在的服务等)，它们通常不会抛出.您必须侦听此 $stateChangeError 事件才能捕获所有错误.
$stateChangeError - fired when an error occurs during transition. It's important to note that if you have any errors in your resolve functions (javascript errors, non-existent services, etc) they will not throw traditionally. You must listen for this $stateChangeError event to catch ALL errors.
https://github.com/angular-ui/ui-router/wiki#wiki-state-change-events
正如评论中提到的@gustavohenke，放置此处理程序的好地方是您应用的主要 .run() 函数.
As @gustavohenke mentioned in the comments, a good place to put this handler is your app's primary .run() function.
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