我想创建切换按钮的指令,我有我想要放入指令的代码:
<div class="toggle-button" ng-class="{true: toggleTrue === true, false: toggleTrue === false}">
<button class="true" ng-click="toggleTrue = true">Y</button><button class="false" ng-click="toggleTrue = false">N</button>
</div>
(我只参与风格改变,这就是为什么我只改变课程)
我希望有类似的东西:
<toogle ng-change="SomeFunction()" ng-model="someValue" />
我如何在指令中使用ng-change?我应该只解析attr还是使用scope属性,还是像ngModel这样的代码需要与ngChange一起使用。
答案 0 :(得分:5)
通过尝试和错误,我找到了与ngModel和ngChange一起使用的代码:
return {
restrict: 'E',
require: 'ngModel',
scope: {},
template: '<div class="toggle-button" ng-class="{true: toggleValue === true, false: toggleValue === false}">'+
'<button class="true" ng-click="toggle(true)">Y</button>'+
'<button class="false" ng-click="toggle(false)">N</button>'+
'</div>',
link: function(scope, element, attrs, ngModel) {
ngModel.$viewChangeListeners.push(function() {
scope.$eval(attrs.ngChange);
});
ngModel.$render = function() {
scope.toggleValue = ngModel.$modelValue;
};
scope.toggle = function(toggle) {
scope.toggleValue = toggle;
ngModel.$setViewValue(toggle);
};
}
};
由于不明原因scope: true
不起作用(如果我将$ scope.toggle变量用作模型,它会尝试执行该布尔值而不是函数)
答案 1 :(得分:1)
尝试这种方式:
控制器:
$scope.someFunction = function(){...};
$scope.someValue = false;
视图:
<toggle change="someFunction" value="someValue"/>
指令(在someValue始终为boolean true / false的情况下):
app.directive('toggle', function(){
return{
restrict: 'E',
replace: true,
template: ''+
'<div class="toggle-button" ng-class="toggleValue">'+
'<button ng-class="toggleValue" ng-click="change()">{{toggleValue&&\'Y\'||\'N\'}}</button>'+
'</div>',
scope: {
toggleValue: '=value',
toggleChange: '=change'
},
link: function(scope){
scope.change = function(){
scope.toggleValue = !scope.toggleValue;
scope.toggleChange();
}
}
};
})