作用域变量没有反映在指令中
scope variable isn't reflected in directive
我试图填充body属性,所以我的模块将打印它作为它的身体部分,但我不知道为什么它不工作,即使我尝试了$scope.$apply()在几个地方。
var app = angular.module('ClientLogger', ['ngRoute'])
app.controller('global', function($scope, $compile) {
$scope.window = window
$scope.sampletext = "sampleText";
$scope.showModal = false;
$scope.toggleModal = function(text) {
$scope.text = text;
$scope.showModal = !$scope.showModal;
};
});
app.directive('modal', function() {
return {
template: '<div class="modal fade">' +
'<div class="modal-dialog">' +
'<div class="modal-content">' +
'<div class="modal-header">' +
'<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>' +
'<h4 class="modal-title">{{ title }}</h4>' +
'</div>' +
'<div class="modal-body" ng-transclude> {{ body }} </div>' +
'</div>' +
'</div>' +
'</div>',
restrict: 'E',
transclude: true,
replace: true,
scope: true,
link: function postLink(scope, element, attrs) {
scope.title = attrs.title;
scope.body = attrs.body;
scope.$watch(attrs.visible, function(value) {
if (value == true)
$(element).modal('show');
else
$(element).modal('hide');
});
$(element).on('shown.bs.modal', function() {
scope.$apply(function() {
scope.$parent[attrs.visible] = true;
});
});
$(element).on('hidden.bs.modal', function() {
scope.$apply(function() {
scope.$parent[attrs.visible] = false;
});
});
}
};
});
<body ng-app='ClientLogger' ng-controller='global'>
<a class="btn btn-default" ng-click="toggleModal(sampletext)"> sample </a>
<modal title="Message Details" body="{{text}}" visible="showModal"></modal>
</body>
如您所见,在我点击链接之后,它将改变变量$scope。文本,它将反映到模态。但我做不到。因为我是Angular的新手,所以我在理解它的机制方面仍然有困难,所以任何具体的细节都会对我很有帮助。你有什么推荐吗? 当您检索attrs.body
时,您正在检索未定义的数据。
多亏了这个,你可以很容易地在你的控制器和你的指令之间共享数据。
所以当你在你的控制器中触发一个动作时,你会将你的数据设置到你的工厂中,然后你可以将你的数据检索到你的指令中。
控制器
(function(){
function Controller($scope, Service) {
$scope.myText = 'sample';
$scope.showModal = false;
$scope.toggleModal = function() {
//Set the myText value by using our Service.set() method
Service.set($scope.myText);
$scope.showModal = !$scope.showModal;
};
}
angular
.module('app', [])
.controller('ctrl', Controller);
})();
服务strong>
(function(){
function Service(){
var data;
function set(value){
data = value;
}
function get(){
return data;
}
return {
get: get,
set: set
};
}
angular
.module('app')
.factory('Service', Service);
})();
指令
(function(){
function modal(Service) {
return {
template: '<div class="modal fade">' +
'<div class="modal-dialog">' +
'<div class="modal-content">' +
'<div class="modal-header">' +
'<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>' +
'<h4 class="modal-title">{{ title }}</h4>' +
'</div>' +
'<div class="modal-body"> {{ body }} </div>' +
'</div>' +
'</div>' +
'</div>',
restrict: 'E',
transclude: true,
replace: true,
scope: true,
link: function (scope, element, attrs) {
scope.title = attrs.title;
scope.$watch(attrs.visible, function(value) {
value
//Retrieve your data by using Service.get() method, and show our modal
? ( scope.body = Service.get(), $(element).modal('show') )
: $(element).modal('hide')
});
$(element).on('shown.bs.modal', function() {
scope.$apply(function() {
scope.$parent[attrs.visible] = true;
});
});
$(element).on('hidden.bs.modal', function() {
scope.$apply(function() {
scope.$parent[attrs.visible] = false;
});
});
}
};
}
angular
.module('app')
.directive('modal', modal);
})();
然后,你可以在你的HTML中调用你的指令。