我以前使用嵌套指令遇到过这个问题,但我设法在那里找到了解决方法。我的代码看起来有点像,
var token = API.callGeneric({}, {method: 'kds.getTokenExtended2', params: ['demo', 'demo', '', '', '', '', '', false, '', '']}); //kds.
token.$promise
.then(function (result) {
if (!angular.isUndefined(result.error)) { // API error
$scope.msg = {iconClass: 'glyphicon-exclamation-sign', txt: 'Looks like there was a problem.'}
if (!APIErr.handle(result.error)) { // handle also returns continueExec flags
return;
}
}
$scope.msg = {iconClass: 'glyphicon-cloud-download', txt: 'almost there…'};
$scope.token = result.result;
console.log('result', result.result);
}, function (error) { // server error
$scope.msg = {iconClass: 'glyphicon-exclamation-sign', txt: 'issues with server, summoning the gods'}
APIErr.handle(error);
})
.then(function (result) {
$scope.msg = {}; // clear the message
// another api call to get bills
return API.callGeneric({}, {method: 'kds.getKitchenDisplayReceipts', params: [$scope.token, new Date().getTime()]});
}, APIErr.handle)
.then(function (result) {
console.log(result); // can see result.result.openReceipts
var receiptIds = result.result.openReceipts; // undefined?
}, APIErr.handle);
显然,API 是调用 API 的服务。
问题是最后几行,其中console.log(result) 显示result.result.openReceipts,很明显result 是一个Resource 对象。
我对这里可能发生的事情感到困惑。有什么线索吗?将来如何避免这种情况?