我已经设法使用 angular-ui-bootstrap 中的示例来演示问题(但您需要打开控制台才能看到它)Plnkr link to this code
为什么表单卡在子范围而不是 $scope 中？
HTML
<!doctype html>
<html ng-app="plunker">
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.8/angular.js"></script>
<script src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.10.0.js"></script>
<script src="example.js"></script>
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div ng-controller="ModalDemoCtrl">
<script type="text/ng-template" id="myModalContent.html">
<div class="modal-header">
<h3>I'm a modal!</h3>
</div>
<div class="modal-body">
<ng-form name="myForm">
<ul>
<li ng-repeat="item in items">
<a ng-click="selected.item = item">{{ item }}</a>
</li>
</ul>
Selected: <b>{{ selected.item }}</b>
</ng-form>
</div>
<div class="modal-footer">
<button class="btn btn-primary" ng-click="ok()">OK</button>
<button class="btn btn-warning" ng-click="cancel()">Cancel</button>
</div>
</script>
<button class="btn btn-default" ng-click="open()">Open me!</button>
<div ng-show="selected">Selection from a modal: {{ selected }}</div>
</div>
</body>
</html>
** Javascript **
angular.module('plunker', ['ui.bootstrap']);
var ModalDemoCtrl = function ($scope, $modal, $log) {
$scope.items = ['item1', 'item2', 'item3'];
$scope.open = function () {
var modalInstance = $modal.open({
templateUrl: 'myModalContent.html',
controller: ModalInstanceCtrl,
resolve: {
items: function () {
return $scope.items;
}
}
});
modalInstance.result.then(function (selectedItem) {
$scope.selected = selectedItem;
}, function () {
$log.info('Modal dismissed at: ' + new Date());
});
};
};
// Please note that $modalInstance represents a modal window (instance) dependency.
// It is not the same as the $modal service used above.
var ModalInstanceCtrl = function ($scope, $modalInstance, items) {
$scope.items = items;
$scope.selected = {
item: $scope.items[0]
};
$scope.ok = function () {
console.log("The form in the $scope says: ", $scope.myForm);
console.log("The form in the $scope.$$childTail says: ", $scope.$$childTail.myForm);
$modalInstance.close($scope.selected.item);
};
$scope.cancel = function () {
$modalInstance.dismiss('cancel');
};
};
ng-form 不在我期望的 $scope 中，即使其他 $scope 项目在那里。表单嵌套范围的原因是什么(由 angular 添加用于表单验证)。
控制台的输出如下所示:
The form in the $scope says: undefined example.js:37
The form in the $scope.$$childTail says:
Constructor {$error: Object, $name: "myForm", $dirty: false, $pristine: true, $valid: true…}
最佳答案
如果您没有在 $modal.open 上指定范围属性它需要 $rootscope。这是来自文档
scope - a scope instance to be used for the modal's content (actually the $modal service is going to create a child scope of a provided scope). Defaults to $rootScope
所以在调用之前设置范围
var modalInstance = $modal.open({
templateUrl: 'myModalContent.html',
controller: ModalInstanceCtrl,
scope:$scope,
resolve: {
items: function () {
return $scope.items;
}
}
});
关于angularjs - 为什么 $modal 会为表单引入额外的作用域？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22109988/