javascript - angularjs根据其他下拉列表中的选定值过滤下拉列表

Question

我想实现以下功能:

假设您有 1 个输入字段和 2 个下拉列表。在输入字段中，您可以填写您的电子邮件地址，然后您可以在旁边选择此电子邮件的类型(个人、专业、其他或无)。

现在，在第三个下拉列表中，您将看到一个电子邮件列表，您可以从中选择您喜欢的电子邮件地址。

那么应该发生什么:

1) 如果输入字段中没有任何内容，则首选电子邮件下拉列表为空(这已经是这种情况)。

2) 当填写了电子邮件和类型时，首选电子邮件下拉列表应包含此值:例如test@test.com(个人)。

3) 当填写了电子邮件但没有填写 TYPE 时，首选电子邮件下拉列表应包含此值:test@test.com 例如没有类型.

HTML:

<div ng-repeat="email in contactInfo.emails">
    <input id="email" type="text" ng-model="email.email"/>
    <select id="emailType" ng-model="email.emailTypeId" ng-options="emailType.id as emailType.name for emailType in emailTypes">
        <option value="">Choose...</option>
    </select>
</div>

<br/><br/>

<label>Preferred e-mail:</label>
<select style="margin-left: 20px; width: 50%;" id="preferred-email" ng-model="contactInfo.preferredEmail" ng-options="email.email for email in (contactInfo.emails | filter:filterEmail) track by email.id">
    <option value="">Choose...</option>
</select>

脚本:

function MyCtrl($scope){
    $scope.contactInfo = {};
    $scope.emailTypes = [{"label":"Personal","id":1,"name":"Personal","rank":2},{"label":"Professional","id":2,"name":"Professional","rank":2},{"label":"Other","id":3,"name":"Other","rank":4}];

    $scope.contactInfo.emails = [{"id":1100, "emailTypeId":2,"email":"member@test.com"}, {"id":1200, "emailTypeId":1,"email":"member2@test.com"}];
    $scope.contactInfo.prefferedEmail = {};

    $scope.filterEmail = function(email){
        return (email.email);
    }
}

JSFIDDLE:

HERE是 fiddle ，但只有第一个在工作。

我没有 Ant 线索，所以如果有人能帮助我，那就太好了。感谢您的宝贵时间。

斯文。

Answer 1

这是一个示例实现 - http://jsfiddle.net/iamgururaj/T7fkH/5/

代码:

<select style="margin-left: 20px; width: 50%;" id="preferred-email" ng-model="contactInfo.preferredEmail" ng-options="getEmail(email) for email in (contactInfo.emails | filter:filterEmail) track by email.id">
    <option value="">Choose...</option>
</select>

JS:

$scope.contactInfo = {
        emails: [{
            "id": 1100,
                "emailTypeId": "2",
                "email": "1@test.com"
        }, {
            "id": 1200,
                "emailTypeId": "1",
                "email": "2@test.com"
        }]
    };
    $scope.emailTypes = {
        "1": "Personal",
            "2": "Professional",
            "3": "Other"
    };
    $scope.filterEmail = function (email) {
        return (email.email);
    }

    $scope.getEmail = function (email) {
        if (email.emailTypeId) {
            return email.email + ' (' + $scope.emailTypes[email.emailTypeId] + ')';
        }
        return email.email;
    }