如何在md-select内部指令中绑定多个 [英] How to bind to multiple in md-select inside directive
问题描述
尝试创建一个简单的指令,以显示文本框或下拉列表,具体取决于是否为范围内的model
属性传递了数组.
Trying to create a simple directive that shows a textbox or dropdown depending on whether an array is passed for a model
property on the scope.
除了在指令标记(例如multiple="false"
)中显式设置false
以外的所有内容都会导致多选下拉列表.
Anything except explicitly setting false
in the directive markup e.g., multiple="false"
, results in a multi-select dropdown.
为什么这不起作用?另外,我怀疑出于同样的原因,md-select值绑定无效(尽管文本框绑定有效).
Why is this not working? Also, md-select value binding is not working (although textbox binding is working), I suspect for the same reason.
消费者
<div ng-app='home' layout-padding layout="row">
<content-filter ng-repeat="filter in filters" flex="filter.width" model="filter.model" value="filter.value"></content-filter>
</div>
消费控制器
app.controller('MainCtrl', function($scope)
{
$scope.filters =
[
{
model:
{
multiSelect: false,
items:
[
{
label: 'All',
value: 'all'
},
{
label: 'Fail',
value: 'fail'
},
{
label: 'Success',
value: 'success'
}
]
},
value: 'all',
width: '50%'
},
{
value: '123',
width: '50%'
}
];
});
指令
app.directive('contentFilter', function()
{
return {
restrict: 'E',
replace: false,
template: '\
<md-input-container flex layout="fill" ng-if="model && model.items.length">\
<md-select ng-model="value" multiple="model.multiSelect === true">\
<md-option ng-repeat="item in model.items" ng-value="{{ item.value }}">{{ item.label }}</md-option>\
</md-select>\
</md-input-container>\
<md-input-container flex layout="fill" ng-if="!model">\
<input type="text" aria-label="{{ label }}" ng-model="value" />\
</md-input-container>',
scope:
{
value: '=',
model: '=?'
}
};
});
推荐答案
可能这不是您要寻找的答案...
Probably this is not the answer you are looking for...
我试图有条件地将多个属性设置为md-select
,但似乎没有任何效果(ng-attr-multiple
,ng-multiple
...).可能是一个有角度的材料错误.
I've tried to conditionally set multiple attribute to md-select
and nothing seems to be work (ng-attr-multiple
, ng-multiple
...). Probably it's an angular-material bug.
因此,作为一种解决方法,您可以根据属性模型有条件地添加两个md-selects.multiSelect值:一个具有多个属性,另一个具有不带属性.示例:
So, as a workaround, you could conditionally add two md-selects, depending on the atribute model.multiSelect value: one with multiple attribute and the other one without it. Example:
<md-input-container flex layout="fill" ng-if="model && !model.multiSelect && model.items.length">\
<md-select ng-model="value">\
<md-option ng-repeat="item in model.items" value="{{ item.value }}">{{ item.label }}</md-option>\
</md-select>\
</md-input-container>\
<md-input-container flex layout="fill" ng-if="model && model.multiSelect && model.items.length">\
<md-select ng-model="[value]" multiple>\
<md-option ng-repeat="item in model.items" value="{{ item.value }}">{{ item.label }}</md-option>\
</md-select>\
</md-input-container>\
重要提示:请记住,如果md-select
是多个,则绑定的值必须是一个数组,因此,您必须每个ng-model="[value]"
更改ng-model="value"
,如您在前面的代码中所见./p>
IMPORTANT: Keep in mind that if the md-select
is multiple, the value binded needs to be an array, so you will have to change ng-model="value"
per ng-model="[value]"
, as you can see in the previous code.
我为您的朋克叉了起来,您可以在此处 >
希望它会有所帮助.无论如何,我将等待其他答案.
Hope it helps. Anyway, I'll be waiting for other answers.
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