如何在离子无线电元件上使用ngModel？ [英] How can I use a ngModel on an ion-radio element?

问题描述

我正在尝试在离子无线电元素上实现ngModel但不知何故它不起作用。这是我的代码：

I'm trying to implement a ngModel on a ion-radio element but somehow it doesn't work. This is my code:

HTML

<ion-list radio-group>
    <ion-list-header>
        Unit
    </ion-list-header>

    <ion-item>
        <ion-label>Metric (kg)</ion-label>
        <ion-radio value="1" [(ngModel)]="unit"></ion-radio>
    </ion-item>

    <ion-item>
        <ion-label>Imperial (lbs)</ion-label>
        <ion-radio value="2" [(ngModel)]="unit"></ion-radio>
    </ion-item>
</ion-list>

Javascript

import {Page} from 'ionic-angular';

@Page({
    templateUrl: 'build/pages/settings/settings.html'
})

export class Settings {
    constructor() {
        this.unit = 2;
    }
}

我尝试在离子输入上实现它和离子选择，这只是工作正常。我还尝试将指令：[FORM_DIRECTIVES] 添加到我的@Page并添加相应的导入，但这不能解决问题。

I've tried implementing it on a ion-input and ion-select and that just works fine. I also tried adding directives: [FORM_DIRECTIVES] to my @Page and added the corresponding import but that doesn't fix the problem.

任何想法？

推荐答案

现在已经改写了语法， ngModel 应该放在 ion-list & radio-group 只有一次。不需要在每个 ion-radio 元素上都有它们。

Syntax has been changed rewritten now, ngModel should be place with ion-list & radio-group only once. No need to have them there on each ion-radio element.

<ion-list radio-group [(ngModel)]="unit">
    <ion-list-header>
        Unit
    </ion-list-header>

    <ion-item>
        <ion-label>Metric (kg)</ion-label>
        <ion-radio value="1"></ion-radio>
    </ion-item>

    <ion-item>
        <ion-label>Imperial (lbs)</ion-label>
        <ion-radio value="2" ></ion-radio>
    </ion-item>
</ion-list>

有关更多信息，请访问ionic2 framework 论坛链接

For more information you could visit ionic2 framework forum link

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