我有一组具有多个属性的对象。所有这些对象都具有object.comment
属性,但在某些对象中填充了字符串('comment' : 'comment text'
),其他对象为空('comment' : ''
)。
我用ng-repeat列出结果,如下所示:
<div class="row msf-row"
ng-repeat="record in filteredRecords = (recordlist | filter:dateFilter | filter: search )"
>
我要完成的是添加一个复选框过滤器,以便仅在选中复选框时显示object.comment
属性填充的结果,以及未选中时的所有结果。
以下是我的过滤器到目前为止的显示方式:
<form role="form">
<div class="form-group col-md-3">
<input type='daterange'
placeholder="Date range"
class="form-control"
format="DD/MM/YYYY"
ng-model="dates"
ranges="ranges" />
</div>
<div class="form-group col-md-1">
<input class="form-control" placeholder="Time" ng-model="search.time">
</div>
<div class="form-group col-md-1">
<input class="form-control" placeholder="Car" ng-model="search.car">
</div>
<div class="form-group col-md-2">
<input class="form-control" placeholder="Driver" ng-model="search.driver">
</div>
<div class="form-group col-md-2">
<input class="form-control" placeholder="From" ng-model="search.from">
</div>
<div class="form-group col-md-2">
<input class="form-control" placeholder="Destination" ng-model="search.destination">
</div>
<div class="form-group col-md-1">
<input class="form-control" placeholder="Pax" ng-model="search.pax">
</div>
<div class="col-md-1">
<div class="checkbox">
<label>
<input type="checkbox"
ng-model="search.cancelled"
ng-change="search.cancelled = search.cancelled ? true : undefined"
> Cancelled
</label>
</div>
</div>
<div class="col-md-2">
<div class="checkbox">
<label>
<input type="checkbox"
ng-model="search.comment"
ng-change="search.comment = search.comment ? true : undefined"
> Commented records
</label>
</div>
</div>
</form>
正如您所看到的,我已经有一个过滤器可以处理object.cancelled
是真还是假,但是当object.comment
为空或有空时,我无法做同样的事情一个字符串。
任何指针?
答案 0 :(得分:2)
您可以创建自定义过滤器,请参阅下面的演示
app.filter('emptyString', [
function() {
return function(input, param) {
if (!param) return input
var ret = [];
if (!angular.isDefined(param)) param = true;
if (param) {
angular.forEach(input, function(v) {
if (angular.isDefined(v.comment) && v.comment) {
v.comment = v.comment.replace(/^\s*/g, '');
ret.push(v);
}
});
}
return ret;
};
}
])
var app = angular.module('app', []);
app.controller('homeCtrl', function($scope) {
$scope.recordlist = [{
time: "10/11/2014",
comment: "super"
}, {
time: "10/11/20004",
comment: ""
}, {
time: "10/11/2005",
comment: ""
}, {
time: "11/1/2014",
comment: "that was ok"
}
];
});
app.filter('emptyString', [
function() {
return function(input, param) {
if (!param) return input
var ret = [];
if (!angular.isDefined(param)) param = true;
if (param) {
angular.forEach(input, function(v) {
if (angular.isDefined(v.comment) && v.comment) {
v.comment = v.comment.replace(/^\s*/g, '');
ret.push(v);
}
});
}
return ret;
};
}
])
&#13;
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.14/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="homeCtrl">
<form role="form">
<div class="form-group col-md-3">
<input type='daterange' placeholder="Date range" class="form-control" format="DD/MM/YYYY" ng-model="dates" ranges="ranges" />
</div>
<div class="form-group col-md-1">
<input class="form-control" placeholder="Time" ng-model="search.time">
</div>
<div class="form-group col-md-1">
<input class="form-control" placeholder="Car" ng-model="search.car">
</div>
<div class="form-group col-md-2">
<input class="form-control" placeholder="Driver" ng-model="search.driver">
</div>
<div class="form-group col-md-2">
<input class="form-control" placeholder="From" ng-model="search.from">
</div>
<div class="form-group col-md-2">
<input class="form-control" placeholder="Destination" ng-model="search.destination">
</div>
<div class="form-group col-md-1">
<input class="form-control" placeholder="Pax" ng-model="search.pax">
</div>
<div class="col-md-1">
<div class="checkbox">
<label>
<input type="checkbox" ng-model="search.cancelled" ng-change="search.cancelled = search.cancelled ? true : undefined">Cancelled
</label>
</div>
</div>
<div class="col-md-2">
<div class="checkbox">
<label>
<input type="checkbox" ng-model="search.comment">Commented records
</label>
</div>
</div>
</form>
<div class="container">
<div class="row " ng-repeat="record in filteredRecords = (recordlist | emptyString : search.comment )">
<div class="col-xs-12" <span class="label">{{record.time}} <span> <strong>{{record.comment}}</strong></p> </div>
</div>
</div>
</div>
&#13;
答案 1 :(得分:1)
一个简单的解决方案是使用ng-hide
指令:
<div class="row"
ng-repeat="record in filteredRecords"
ng-hide="search.comment && (!record.comment || record.comment === '')">
</div>
它的含义是:如果选中search.comment
并且record.comment
未定义或为空,则隐藏此元素。
查看这个plunker:http://plnkr.co/edit/m8rA0rVxqgWS0NWukJdf?p=preview
这是预期的行为吗?