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我使用角度1.0.7,如果它是重要的.
我正在使用transclude:true,以及isolate范围,以便同时允许多个不同字段的错误,并仍然保持对外部$scope的ng-model引用.
问题:
当我在input元素上使用this指令时,input元素不会克隆(‘Transclude’)到指令模板中.
因此,我在DOM中获得了一个空的div元素,并带有ng-transclude属性.
普拉克:
http://plnkr.co/edit/vFB9ih6x2NBmwhAes3Qh?p=preview
码:
<input data-my-validate-input data-value-required="true" type="password" class="loginItem" placeholder="password" name="password" data-ng-model="formData.password" data-display-name="password">
但是当我将这个输入元素包装在span或div中时,子输入元素被超越了,但是我没有在指令处获得对正确的外部ng-model(ctrl)的引用.
<span data-my-validate-input data-value-required="true" data-display-name="password"> <input type="password" class="loginItem" placeholder="password" name="password" data-ng-model="formData.password" > </span>
完整代码(链接函数内部的逻辑与问题无关,但我更喜欢发布我的完整代码)
directive('myValidateInput',function() { return { require: 'ngModel',reStrict: 'A',transclude: true,scope: { displayName: '@',valuerequired: '@',maxLength: '@',minLength: '@',minLetters: '@',minnumbers: '@' },template: '<div class="validationContainer">\ <div ng-transclude></div>\ <div class="input-Help">\ <h4>{{fieldErrorDisplay}}</h4>\ <ul>\ <li data-ng-repeat="rule in requirementSpec" ng-class="rule.class">\ {{rule.msg}}\ </li>\ </ul>\ </div>\ </div>',replace: true,link: function(scope,elm,attrs,ctrl) { var validator = function(viewvalue){ if(scope.valuerequired && viewValue.length == 0 && (!scope.maxLength && !scope.minLength && !scope.minLetters && !scope.minnumbers)){ scope.valid = false; scope.fieldErrorDisplay = scope.fieldName + ' is required'; } else{ scope.fieldErrorDisplay = scope.fieldName + ' must meet the following requirements: '; scope.requirementSpec = []; if(scope.minLength){ var itemValidity = viewValue.length >= scope.minLength; scope.valid = !itemValidity ? false : scope.valid; var item = { 'msg' : 'Must be at least ' + scope.minLength + ' characters long','class' : itemValidity ? 'valid' : undefined }; scope.requirementSpec[nameStr].push(item); } else if(scope.valuerequired){ var itemValidity = viewValue && viewValue.length >= 1; scope.valid = !itemValidity ? false : scope.valid; var item = { 'msg' : 'This field must be filled','class' : itemValidity ? 'valid' : undefined }; scope.requirementSpec[nameStr].push(item); } if(scope.maxLength){ var itemValidity = viewValue.length <= scope.maxLength; scope.valid = !itemValidity ? false : scope.valid; var item = { 'msg' : 'Must be ' + scope.maxLength + ' characters long at most ','class' : itemValidity ? 'valid' : undefined }; scope.requirementSpec[nameStr].push(item); } if(scope.minLetters){ var itemValidity = (viewValue && /[A-z]/.test(viewvalue)); scope.valid = !itemValidity ? false : scope.valid; var item = { 'msg' : 'Must contain at least ' + scope.minLetters + ' letters','class' : itemValidity ? 'valid' : undefined }; scope.requirementSpec[nameStr].push(item); } if(attrs.minnumbers){ var itemValidity = (viewValue && /\d/.test(viewvalue)); scope.valid = !itemValidity ? false : scope.valid; var item = { 'msg' : 'Must contain at least' + attrs.minnumbers + ' numbers','class' : itemValidity ? 'valid' : undefined }; scope.requirementSpec[nameStr].push(item); } } if(scope.valid) { ctrl.$SETVALidity(nameStr,truE); return viewValue; } else { ctrl.$SETVALidity(nameStr,falsE); return undefined; } } scope.requirementSpec = {}; ctrl.$parserS.Unshift(function(viewvalue) { return validator(viewvalue); }); ctrl.$formatterS.Unshift(function(viewvalue) { // var before = scope.$eval(attrs.validateBeforE); if(viewValue && viewValue != "" && viewValue.length > 0) return validator(viewvalue); }); }); } });
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