[英]How do I removed selected ng-options from other uses of same ng-options
I am trying to reuse an ng-options instance but remove the selected items from previous uses. 我正在尝试重用ng-options实例,但从以前的用途中删除了选定的项目。
I have a plunker started http://plnkr.co/edit/Fx7igqMjPsBQz1vtUlsM?p=preview 我有一个矮胖的人开始http://plnkr.co/edit/Fx7igqMjPsBQz1vtUlsM?p=preview
HTML HTML
<body ng-controller="SelectController">
<div class="form-group col-md-3">
<label for="select1">Select 1:</label>
<select ng-model="newForm.select1"
ng-options="option.name as option.name for option in options"
class="form-control">
<option value=""></option>
</select>
</div>
<div class="row"><br></div>
<div class="form-group col-md-3">
<label for="select2">Select 2:</label>
<select ng-model="newForm.select2"
ng-options="option.name as option.name for option in options"
class="form-control">
<option value=""></option>
</select>
</div>
JS JS
var app = angular.module('select', []);
app.controller('SelectController', function($scope) {
$scope.options = [
{name: 'Apple', id: '1'},
{name: 'Orange', id: '2'},
{name: 'Banana', id: '3'},
{name: 'Pear', id: '4'},
];
});
So, for example if select 1 = Apples, I want to remove Apples from the ng-options in select 2. 因此,例如,如果select 1 = Apples,我想从select 2的ng-options中删除Apples。
What's the best way to do this? 最好的方法是什么? Thanks.
谢谢。
ng-options
: ng-options
: ng-options="... in options | filter: newForm.select1 && {name: '!' + newForm.select1}"
where newForm.select1
represents the model value of the first selection. 其中
newForm.select1
代表第一个选择的模型值。
See demo fiddle 见演示小提琴
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