在geonetwork 3.6主页中,我想选择显示哪些元数据类别。 Geonetwork使用AngularJs(我不熟悉)的分面搜索来选择显示的类别。默认情况下,会显示所有可用类别。
代码如下:
<div class="row">
<span data-ng-repeat="(key, facet) in searchInfo.facet['category']"
class="col-xs-12 col-sm-6 col-md-4 chips-card">
<a href="#/search?facet.q=category%2F{{facet['@name']}}">
<img class="pull-left img-thumbnail" src="http://localhost:8080/geonetwork/images/harvesting/odnature.png" alt="thumbnail image"></img>
</a>
<a class="pull-left clearfix"
title="{{facet['@label']}}">
<span class="badge-text pull-left">
<span class="gn-icon-label">{{facet['@label']}}</span>
</span>
</a>
</span>
</div>
我不需要选择所有类别,而只需选择其中的几个类别。我尝试通过更改ng-repeat元素进行过滤,如:
<span data-ng-repeat="(key, facet) in searchInfo.facet['category'] == 'some_category'"
但没有结果。有没有办法轻松选择显示哪些元素?
AngularJS有filter的ngRepeat
语法:
<span data-ng-repeat="(key, facet) in searchInfo.facet['category'] | filter:'some_category'" ...>
如果要按多个字符串进行过滤,最好使用谓词函数:
<span data-ng-repeat="(key, facet) in searchInfo.facet['category'] | filter:catSubset" ...>
在控制器中定义谓词函数:
$scope.catSubset = function(value, index, array) {
if(value == "some_category" || value == "some_other_category") {
return true;
}
}
Internet Explorer(不使用polyfill)不支持此功能,但更易于读/写:
var selectedCategories = [
"some_category",
"some_other_category"
];
$scope.catSubset = function(value, index, array) {
if(selectedCategories.includes(value)) {
return true;
}
}
由于我需要的类别数量非常有限,我改变了策略并对其进行了编码,而不是使用过滤器选项。如果需要许多类别,这不是一个有效的解决方案,但对我而言,它是可以接受的。我用这种方式编码:
<div class="col-sm-12 col-md-12" data-ng-show="browse !== ''"> <!-- set width of facet box on main page -->
<h3>
<div class="row"> <!-- box containing the different topics -->
<!-- First category -->
<div class="col-xs-12 col-sm-6 col-md-4 chips-card text-center">
<a href="#/search?facet.q=keyword%2FMarine Spatial Plan%26type%2Fdataset&resultType=details">
<img class="img-thumbnail" src="http://localhost:8080/geonetwork/images/harvesting/belgica-image.jpeg" alt="thumbnail image"></img>
<p>Marine Spatial Plan</p>
</a>
</div>
<!-- Second category -->
<div
class="col-xs-12 col-sm-6 col-md-4 chips-card text-center">
<a href="#/search?facet.q=keyword%2FMarine Strategy Framework Directive%26type%2Fdataset&resultType=details">
<img class="img-thumbnail" src="http://localhost:8080/geonetwork/images/harvesting/MSFD-logo.jpeg" alt="thumbnail image"></img>
<p class="text-center">Marine Strategy Framework Directive</p>
</a>
</div>
等等。