[英]How to manipulate controller's scope from directive in angular 1.4.5+
如何覆盖指令中的myCtrl变量? 之后,控制器必须更新结果...
我听说过bindToController,但无法正常工作。
使用的ng版本1.4.5
HTML:
<form method="POST">
<div ng-app="myapp">
<div ng-controller="myCtrl">
<div ng-repeat="(field, value) in box.fields">
<div class="my-toggle" my-toggle="field" ng-bind="value['par2']"></div>
</div>
</div
</div>
</form>
JS:
//The question is, how can i overwrite the myCtrl's variable from directive?
//and after, the controller must update the results...
//I heard about bindToController, but I could not get it to work.
//used version 1.4.5
var myapp = angular.module('myapp', []);
myapp.controller('myCtrl', function ($scope){
$scope.box = {
fields : {
fieldOne:{
par1 : 10,
par2 : 12,
},
fieldTwo:{
par1 : 20,
par2 : 24,
},
fieldThree:{
par1 : 30,
par2 : 36,
}
}
};
});
myapp.directive('myToggle', [function(){
return{
restrict: 'A',
scope: {
myToggle : '=',
},
link : function(scope, element, attr){
var startX = 0, x = 0;
var elementLeft = 0;
element.on('mousedown', function(event){
//ctrlSCOPE.fields[scope.mytoggle]['par1'] + 1;
//console.log(ctrlSCOPE.fields[scope.mytoggle]['par2']);
});
},
};
}]);
您无需考虑在指令中使用controllerAs
语法时会使用的bindToController
。
我认为您应该传递ng-repeat
value
,而不是传递其键field
如my-toggle="value"
当您要通过mousedown
事件更新作用域变量时,该事件不会更新作用域变量的值。 事件被认为是脱离角度的上下文,因此在这种情况下角度不会运行摘要循环。 您可以通过执行scope.$apply()
运行该摘要循环。 最好使用$timeout
来避免digest
循环冲突。
标记
<div ng-repeat="(field, value) in box.fields">
<div class="my-toggle" my-toggle="value" ng-bind="value['par2']"></div>
</div>
指示
myapp.directive('myToggle', [function(){
return{
restrict: 'A',
scope: {
myToggle : '='
},
link : function(scope, element, attr){
var startX = 0, x = 0;
var elementLeft = 0;
element.on('mousedown', function(event){
scope.$apply(function(){
scope.myToggle['par1'] = scope.myToggle['par1'] + 1;
scope.myToggle['par2'] = scope.myToggle['par2'] + 1;
console.log(scope.myToggle['par2']);
});
});
},
};
}]);
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.