尝试从Angular UI中的modal component中保存值时遇到很多麻烦。
这是调用模态对话框的页面控制器
$scope.sourceSchema = [];
$scope.targetSchema = [];
$scope.apiDefinition = [];
$scope.availableSchemas = availableSchemas.get();
$scope.addComponent = function (type) {
$scope.$broadcast('addComponent', [type]);
var templateUrl = "";
var controller = null;
var resolve = null;
var componentSchema = [];
switch (type) {
case "sourceSchema":
templateUrl = 'source-schema.tpl.html';
controller = 'SourceCtrl';
componentSchema = $scope.sourceSchema;
break;
case "targetSchema":
templateUrl = 'target-schema.tpl.html';
controller = 'TargetCtrl';
componentSchema = $scope.targetSchema;
break;
case "api":
templateUrl = 'api.tpl.html';
controller = 'SourceCtrl';
componentSchema = $scope.apiDefinition;
break;
}
var modalInstance = $modal.open({
templateUrl: templateUrl,
controller: controller,
resolve: {
existingSchemas: function () {
return $scope.availableSchemas;
}
}
});
modalInstance.result.then(function (selectedItem) {
componentSchema.push(selectedItem);
}, function () {
// $log.info('Modal dismissed at: ' + new Date());
});
};
这是控制我使用的模式对话框之一的SourceCtrl:
.controller("SourceCtrl", function ($scope, $modalInstance, existingSchemas) {
$scope.existingSchemas = existingSchemas;
$scope.sourceSchema = "";
$scope.ok = function () {
$modalInstance.close($scope.sourceSchema);
};
$scope.cancel = function () {
$modalInstance.dismiss('cancel');
};
$scope.$watch('sourceSchema', function(newValue, oldValue) {
console.log(newValue, oldValue);
})
})
最后是此控制器的模板(SourceCtrl)。
<div class="modal-header">
<h3>New Source Schema</h3>
</div>
<div class="modal-body">
<div class="row">
<div class="col-xs-3">
<label for="schema-source">Source</label>
</div>
<div class="col-xs-9">
<select name="sourceSchema" ng-model="sourceSchema" ng-options="s as s.name for s in existingSchemas">
<option value="">-- choose source --</option>
</select>
</div>
<h5>Name: {{sourceSchema.name}}</h5>
</div>
</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>
有趣的是,当我更改选择中的值时,{{sourceSchema.name}}行的确显示了正确的模式名称,但是更改未反映在控制器中,并且未传递实际值上。我曾经用一只手表来检测什么时候改变了,显然没有改变。但是该值确实会更改,否则为什么当我在下拉列表中选择它时为什么会显示它。
最佳答案
确保ngModel表达式中有一个点-即-您绑定到对象属性而不是直接绑定到作用域。就像是:
.controller("SourceCtrl", function ($scope, $modalInstance, existingSchemas) {
$scope.existingSchemas = existingSchemas;
$scope.source = {
schema: ''
};
$scope.ok = function () {
$modalInstance.close($scope.source.schema);
};
$scope.cancel = function () {
$modalInstance.dismiss('cancel');
};
$scope.$watch('source.schema', function(newValue, oldValue) {
console.log(newValue, oldValue);
})
})
然后,在您的标记中:
<select name="sourceSchema" ng-model="source.schema" ng-options="s as s.name for s in existingSchemas">
<option value="">-- choose source --</option>
</select>
如果您可以提供插件,我可以帮助您修复代码。