[英]How to filter objects in array by category key in Angular ng-repeat
我正在嘗試使用Angular過濾器按類別僅顯示排序標簽
標簽 array
標簽 object
示例:
{
term: term,
id: id,
category: category
}
ng-repeat標簽:
<li ng-repeat="(k, m) in tags | filter: filterTags | orderBy:predicate:reverse"
ng-class="{'selected': m.selected}"
ng-click="selectTag(m)">
<div class="tag">{{m.term}}</div>
</li>
“按類別排序”單選按鈕:
<div class="category-selection">
<ul>
<li>
<input type="radio" ng-model="catSort" name="brand" value="brand">
Brand
</li>
<li>
<input type="radio" ng-model="catSort" name="client" value="client">
Client
</li>
在排序單選按鈕指令控制器中:
// Detect category sort
// Then apply the value to the filter function:
$scope.$watch('catSort', function(value) {
console.log(value);
tagsPanel = ScopeFactory.getScope('tagsPanel');
tagsPanel.filterTags(value);
});
我發現過濾器具有它自己的Angular模塊,所以我的問題是,如何將類別字符串放入此過濾器?
.filter('filterTags', function() {
return function(tags, category) {
return tags;
};
});
這是捕獲新類別的地方,如何將值發送到上面的過濾器中?
$scope.$watch('catSort', function(value) {
console.log(value);
});
如果我做對了。 您想按類別過濾標簽對象數組。
您可以調用范圍方法,如果它與當前選定的類別匹配,則返回true。 此方法的參數將是ng-repeat的tag
對象。 因此,您可以執行類似return tag.category == $scope.catSort;
的檢查return tag.category == $scope.catSort;
請看下面的演示,這里是jsFiddle 。
(我采用運動類別只是為了獲得一些虛擬數據。)
angular.module('myApp', []) .controller('mainCtrl', function ($scope) { $scope.catSort = "football"; $scope.tags = [{ term: 'foot1', id: 'id', category: 'football' }, { term: 'foot2', id: 'id2', category: 'football' }, { term: 'base1', id: 'id', category: 'baseball' }, { term: 'base2', id: 'id2', category: 'baseball' }, ]; $scope.filterTags = function (tag) { //console.log(tag, $scope.catSort); return tag.category == $scope.catSort; }; });
ul { list-style-type: none; }
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <div ng-app="myApp" ng-controller="mainCtrl">Filter by category: <div class="category-selection"> <ul> <li> <input type="radio" ng-model="catSort" name="football" value="football" />Football</li> <li> <input type="radio" ng-model="catSort" name="baseball" value="baseball" />Baseball</li> </ul> </div>Teams: <ul> <li ng-repeat="(index, tag) in tags | filter: filterTags" ng-class="{'selected': tag.selected}" ng-click="selectTag(tag)"> <div class="tag">{{tag.term}}</div> </li> </ul> </div>
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