我想通过自定义指令将“ng-pattern”指令添加到输入元素。我不想直接在模板中执行它,但看起来我陷入了无限循环。Angular指令编译:“RangeError:超出最大调用堆栈大小”
我试着先设置'html'并编译后的元素(Angular compile in directive seems to go into infinite loop),但范围未定义。我不知道它是否与替换元素的内容有关。
我应该创建一个新的范围?我错过了什么吗?
在此先感谢!
var myHtml = iElem[0].outerHTML;
iElem.replaceWith(myHtml);
var compiledElement = $compile(iElem)(iElem.scope());
HTML:
<input type="text" ng-model="personal.testNumber_string" my-model="personal.testNumber" dot-to-comma>
指令:
function dotToCommaConverter($compile) {
return {
require: 'ngModel',
restrict: 'A',
scope: {
myModel: '='
},
controllerAs: 'dot2Comma',
controller: function($scope) {
this.myModel = $scope.myModel;
},
compile: function(tElem, tAttrs) {
return {
pre: function(scope, iElem, iAttrs) {
},
post: function(scope, iElem, iAttrs, modelCtrl) {
iElem.attr('ng-pattern', '/^-?[0-9]+(?:\,[0-9]+)?$/');
var compiledElement = $compile(iElem)(iElem.scope());
iElem.replaceWith(compiledElement);
modelCtrl.$setViewValue(String(scope.dot2Comma.myModel).replace('.', ','));
modelCtrl.$render();
modelCtrl.$parsers.push(function(inputValue) {
var transformedInput = inputValue.replace(/[^0-9,.-]/g, '');
transformedInput = transformedInput.replace('.', ',');
transformedInput = transformedInput.replace(' ', '');
if (transformedInput !== inputValue) {
modelCtrl.$setViewValue(transformedInput);
modelCtrl.$render();
}
if (!isNaN(Number(transformedInput.replace(',', '.')))) {
scope.myModel = Number(transformedInput.replace(',', '.'));
} else {
scope.myModel = undefined;
}
return transformedInput;
});
}
};
}
};
}