我在使用表单时遇到了一些基本问题.这就是我做的.
我从这里抓住这个看起来很酷的指令:https://github.com/TheSharpieOne/angular-input-match
它看起来像这样:
directive('match',function () { return { require: 'ngModel',restrict: 'A',scope: { match: '=' },link: function(scope,elem,attrs,ngModel) { scope.$watch(function() { return (ngModel.$pristine && angular.isUndefined(ngModel.$modelValue)) || scope.match === ngModel.$viewValue; },function(currentValue,prevIoUsValue) { ngModel.$setValidity('match',currentValue); }); } }; });
本质上,该指令监视它附加到模型值的元素,并将其与match属性中的模型值进行比较.
所以…例如,下面我们正在观察两个密码是否匹配:
Password: <input ng-model="password" type="password" /> Confirm: <input ng-model="passwordConfirm" type="password" match="password" />
该指令似乎正在起作用,因为它适当地设置了ng-valid-match和ng-invalid-match.
但是,一旦将其设置为无效,passwordConfirm模型将永远不会再次更新.我已经完成了大量的console.loggin,在指令中查看ngModel,这是两个密码匹配时的样子:
Constructor {$viewValue: "asdf",$modelValue: undefined,$validators: Object,$parsers: Array[0],$formatters: Array[0]…} $$debounceViewValueCommit: function (trigger,revalidate) { $$invalidModelValue: "asdf" $$lastCommittedViewValue: "asdf" $$runValidators: function (modelValue,viewValue) { $$validityState: ValidityState $$writeModelToScope: function () { $commitViewValue: function (revalidate) { $dirty: true $error: Object $formatters: Array[0] $invalid: false $isEmpty: function (value) { $modelValue: undefined $name: "passwordConfirmation" $parsers: Array[0] $pristine: false $render: function () { $rollbackViewValue: function () { $setPristine: function () { $setTouched: function () { $setUntouched: function () { $setValidity: function (validationErrorKey,isValid) { $setViewValue: function (value,trigger,revalidate) { $touched: true $untouched: false $valid: true $validate: function () { $validators: Object $viewChangeListeners: Array[0] $viewValue: "asdf" __proto__: Object
请注意$viewValue是正确的,但$modelValue列为undefined,$invalidModelValue仍然有值.
这两个密码匹配时,这就是html的样子:
<input type="password" class="form-control ng-isolate-scope ng-dirty ng-valid-required ng-valid ng-valid-match ng-touched" id="passwordConfirmation" name="passwordConfirmation" placeholder="Confirm your password" ng-model="passwordConfirmation" required="" match="password" style="">
我错过了某个地方的东西吗?我已经圈了几个小时.
在
recent update中,根据字段的有效性对$modelValue的填充方式进行了更改.如果该字段无效,则$modelValue将设置为undefined,并且将使用该值填充新属性$$invalidModelValue.
原文链接:https://www.f2er.com/angularjs/143656.html作为使用1.2.*和1.3.*的解决方案,我想出了这个:
.directive('match',function () { return { require: 'ngModel',scope: { match: '=' },ctrl) { scope.$watch(function() { modelValue = ctrl.$modelValue || ctrl.$$invalidModelValue; return (ctrl.$pristine && angular.isUndefined(modelValue)) || scope.match === modelValue; },function(currentValue) { ctrl.$setValidity('match',currentValue); }); } }; });
虽然此解决方案适用于两个版本,但1.3.*具有新的$validators管道,建议用于新版本.