动态表单名称属性 <input type="text"name="{{ 变量名}}";/>在 Angularjs 中 [英] Dynamic form name attribute <input type="text" name="{{ variable-name }}" /> in Angularjs
问题描述
如果inputName"是动态创建的,那么人们将如何使用 formName.inputName.$valid ?
HTML 输入属性name"的输出将是字符串variablename",它将应用于所有重复输入.
如果我们试过这个
HTML 输入属性 'name' 的输出将是字符串{{ variable.name }}",它将应用于所有重复输入.
在这两种情况中的任何一种情况下,都不会动态创建每个重复输入元素的名称属性;所有输入将共享相同的输入名称.如果您想根据特定名称调用特定输入,那就没什么好处了.
- 需要使用动态名称值
- 需要能够调用 $scope.formName.dynamicName.$valid
- 需要能够调用 $scope.formName.$valid
- 需要将动态名称输入字段添加到嵌套表单或主表单中
看起来 Angular 1.3 修复了这个问题 (https://stackoverflow.com/a/32907176/3854385)
现在可以使用 Angular 1.3+:
</表单>
在某些情况下,如果您可以只传递信息,内部表单是一个很好的解决方案:(https://stackoverflow.com/posts/12044600/)要解决动态名称"问题您需要创建一个内部表单(请参阅ng-form):
<ng-form name="urlForm"><input type="url" name="socialUrl" ng-model="social.url"><span class="alert error" ng-show="urlForm.socialUrl.$error.url">网址错误</span><button ng-click="doSomething(urlForm.socialUrl.$valid)">测试</button></ng-form>
另一种选择是为此编写自定义指令.
这里是 jsFiddle 展示了 ngForm 的用法:http://jsfiddle.net/pkozlowski_opensource/XK2ZT/2/
How would someone use formName.inputName.$valid when the "inputName" was dynamically created?
<form name="formName">
<input ng-repeat="(variable) in variables"
type="text" name="variable.name"
ng-model="variable.name" required />
</form>
The output of the HTML input attribute 'name' would be the string "variablename", which would applied to ALL repeated inputs.
If we tried this
<form name="formName">
<input ng-repeat="(variable) in variables"
type="text" name="{{ variable.name }}"
ng-model="variable.name" required />
</form>
The output of the HTML input attribute 'name' would be the string"{{ variable.name }}", which would be applied to ALL repeated inputs.
In either of these two conditions, a name attribute for each of the repeated input elements would not be created dynamically; ALL inputs would share the same input name. Not much good if you wanted to call a specific input based on a specific name.
- need to use dynamic name values
- need to be able to call $scope.formName.dynamicName.$valid
- need to be able to call $scope.formName.$valid
- need dynamic name input fields to be added to nested form, or master form
Looks like Angular 1.3 fixed this (https://stackoverflow.com/a/32907176/3854385)
This is now possible with Angular 1.3+:
<form name="vm.myForm" novalidate>
<div ng-repeat="p in vm.persons">
<input type="text" name="person_{{$index}}" ng-model="p" required>
<span ng-show="vm.myForm['person_' + $index].$invalid">Enter a name</span>
</div>
</form>
In some cases an inner form is a good solution if you can just pass the information: (https://stackoverflow.com/posts/12044600/) To solve the 'dynamic name' problem you need to create an inner form (see ng-form):
<div ng-repeat="social in formData.socials">
<ng-form name="urlForm">
<input type="url" name="socialUrl" ng-model="social.url">
<span class="alert error" ng-show="urlForm.socialUrl.$error.url">URL error</span>
<button ng-click="doSomething(urlForm.socialUrl.$valid)">Test</button>
</ng-form>
</div>
The other alternative would be to write a custom directive for this.
Here is the jsFiddle showing the usage of the ngForm: http://jsfiddle.net/pkozlowski_opensource/XK2ZT/2/
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