如何从自定义验证指令设置ng模型变量 如何从angularjs指令外部链接函数调用控制器作用域
如何从自定义验证指令设置ng模型变量 如何从angularjs指令外部链接函数调用控制器作用域,angularjs,angularjs-directive,angularjs-scope,angularjs-ng-model,Angularjs,Angularjs Directive,Angularjs Scope,Angularjs Ng Model,$scope是此处未知的提供程序: app.directive('checkId', function($parse,$scope, $http){//here $scope is unknown provider return{ restrict:'A', link: function(scope, element, attrs){ element.bind('change', function(){ var filteredLength
$scope
是此处未知的提供程序:
app.directive('checkId', function($parse,$scope, $http){//here $scope is unknown provider
return{
restrict:'A',
link: function(scope, element, attrs){
element.bind('change', function(){
var filteredLength = $parse(attrs.filtered)(scope);
console.log(filteredLength);
var newFilteredArray = scope.stateList.filter(function(values){
return values.toUpperCase() == scope.TRDetail.memberNo.toUpperCase();
});
if(filteredLength == 0){
console.log("if called");
scope.TRDetail.memberNo = "";
}else if(newFilteredArray.length == 0){
scope.TRDetail.memberNo = "";
};
scope.$apply();
thisIsCalled(scope.TRDetail.memberNo);
});
}
};
function thisIsCalled(someData){
if(someData == ""){
alert("NOT doing some $http srvices");
}else{
$http.post("SomeURL", someData).then(function(response, error){
if(error){
alert("sorry no data found" + error.message);
}else{
$scope.TRDetail.memberName = response.data;
}
});
};
};
});
HTML:
成员编号:(未找到任何内容)
{{x}
成员名称
我无法更新TRDetail.memberName
外部链接功能。
有什么帮助,怎么办?你的函数
这被称为(某些数据)
只是不存在于你的angular应用程序中。您应该通过指令的控制器访问$scope元素:
angular.directive('checkId', function($parse, $scope, $http) {
return {
restrict: 'A',
link: //your link stuff
controller: myController
};
});
function myController($scope) {
//here you can access the scope
}
tl;博士强> 使用
ngModel.$setViewValue
当自定义指令与
ng model
指令组合时,该指令应使用ngModelController
API:
app.directive('checkId', function($parse,$http){
return{
require: 'ngModel',
restrict:'A',
link: function(scope, element, attrs, ngModel){
̶e̶l̶e̶m̶e̶n̶t̶.̶b̶i̶n̶d̶(̶'̶c̶h̶a̶n̶g̶e̶'̶,̶ ̶f̶u̶n̶c̶t̶i̶o̶n̶(̶)̶{̶
ngModel.$viewChangeListeners.push(onChange);
function onChange(){
if (!ngModel.$modelValue) return;
var filteredLength = $parse(attrs.filtered)(scope);
console.log(filteredLength);
var newFilteredArray = scope.stateList.filter(function(values){
̶r̶e̶t̶u̶r̶n̶ ̶v̶a̶l̶u̶e̶s̶.̶t̶o̶U̶p̶p̶e̶r̶C̶a̶s̶e̶(̶)̶ ̶=̶=̶ ̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶.̶t̶o̶U̶p̶p̶e̶r̶C̶a̶s̶e̶(̶)̶;̶
return values.toUpperCase() == ngModel.$modelValue.toUpperCase();
});
if(filteredLength == 0){
console.log("if called");
̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶ ̶=̶ ̶"̶"̶;̶
ngModel.$setViewValue("");
}else if(newFilteredArray.length == 0){
̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶ ̶=̶ ̶"̶"̶;̶
ngModel.$setViewValue("");
};
̶s̶c̶o̶p̶e̶.̶$̶a̶p̶p̶l̶y̶(̶)̶;̶
̶t̶h̶i̶s̶I̶s̶C̶a̶l̶l̶e̶d̶(̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶)̶;̶
thisIsCalled(ngModel.$modelValue);
}
有关详细信息,请参阅
myController
为thisalled
,如您所愿。我仍然无法通过传递一些变量来调用函数并更新主控制器范围,因为一个变量将从链接函数中传递,thisalled
函数并将更新父范围。@georgeawg,我想使用调用的从link函数传递一个变量;然后此函数将更新html中的父作用域。@GuillaumeGeorges建议的重复项在这种情况下不适用。
app.directive('checkId', function($parse,$http){
return{
require: 'ngModel',
restrict:'A',
link: function(scope, element, attrs, ngModel){
̶e̶l̶e̶m̶e̶n̶t̶.̶b̶i̶n̶d̶(̶'̶c̶h̶a̶n̶g̶e̶'̶,̶ ̶f̶u̶n̶c̶t̶i̶o̶n̶(̶)̶{̶
ngModel.$viewChangeListeners.push(onChange);
function onChange(){
if (!ngModel.$modelValue) return;
var filteredLength = $parse(attrs.filtered)(scope);
console.log(filteredLength);
var newFilteredArray = scope.stateList.filter(function(values){
̶r̶e̶t̶u̶r̶n̶ ̶v̶a̶l̶u̶e̶s̶.̶t̶o̶U̶p̶p̶e̶r̶C̶a̶s̶e̶(̶)̶ ̶=̶=̶ ̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶.̶t̶o̶U̶p̶p̶e̶r̶C̶a̶s̶e̶(̶)̶;̶
return values.toUpperCase() == ngModel.$modelValue.toUpperCase();
});
if(filteredLength == 0){
console.log("if called");
̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶ ̶=̶ ̶"̶"̶;̶
ngModel.$setViewValue("");
}else if(newFilteredArray.length == 0){
̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶ ̶=̶ ̶"̶"̶;̶
ngModel.$setViewValue("");
};
̶s̶c̶o̶p̶e̶.̶$̶a̶p̶p̶l̶y̶(̶)̶;̶
̶t̶h̶i̶s̶I̶s̶C̶a̶l̶l̶e̶d̶(̶s̶c̶o̶p̶e̶.̶T̶R̶D̶e̶t̶a̶i̶l̶.̶m̶e̶m̶b̶e̶r̶N̶o̶)̶;̶
thisIsCalled(ngModel.$modelValue);
}
function thisIsCalled(someData){
if(someData == ""){
alert("NOT doing some $http srvices");
}else{
$http.post("SomeURL", someData)
.then(function(response){
ngModel.$setViewValue(response.data);
})
.catch(function(error) {
alert("sorry no data found" + error.status);
});
};
}
}
};