使用查询AngularFire检索记录

我有一些建议可能会有所帮助:

查看Firebase查询文档.特别,

.orderByChild()

.equalTo()

您可以结合使用查询.$ref()来获取所需的记录.

例

看看这个有效的PLNKR示例.

我在我的一个公开Firebase实例中复制了您的数据.

您正在寻找的查询是 seriesCollectionRef.orderByChild("name").equalTo(seriesName)

如果在输入中输入' Avatar: The Last Airbender'并单击"查找",您将获得匹配的系列对象.

在我的示例中,我扩展了$firebaseArray服务以包括按名称查找特定系列的方法.

请参阅有关扩展AngularFire服务的文档.

您可以在不扩展服务的情况下完成相同的操作,请参阅最后一个代码段.

工厂

app.factory('SeriesFactory', function(SeriesArrayFactory, fbUrl){
  return function(){
    var ref = new Firebase(fbUrl+'/series');
    return new SeriesArrayFactory(ref);
  }
});

app.factory('SeriesArrayFactory', function($firebaseArray, $q){
  return $firebaseArray.$extend({
    findSeries:function(seriesName){
      var deferred = $q.defer();
      // query by 'name'
      this.$ref().orderByChild("name").equalTo(seriesName).once("value", function(dataSnapshot){
        if(dataSnapshot.exists()){
          deferred.resolve(dataSnapshot.val());
        } else {
          deferred.reject("Not found.");
        }
      });
      return deferred.promise;
    }
  });
});

app.controller('HomeController',function($scope, SeriesFactory, fbUrl) {

  $scope.seriesName = '';

  $scope.findSeries = function() {
    console.log("Finding series with name:'",$scope.seriesName,"'");
    var seriesCollection = new SeriesFactory();
    seriesCollection.findSeries($scope.seriesName).then(function(data){
      console.log("Found",data);
      $scope.series = data;
    }).catch(function(error){
      console.warn(error);
    });
  };

});

  $scope.findSeriesWithoutFactory = function() {
    var seriesRef = new Firebase(fbUrl+'/series');
    var seriesCollection = $firebaseArray(seriesRef);
    seriesCollection.$ref().orderByChild("name").equalTo($scope.seriesName).once("value", function(dataSnapshot){
        var series = dataSnapshot.val();
        if(dataSnapshot.exists()){
          console.log("Found", series);
          $scope.series = series;
        } else {
          console.warn("Not found.");
        }
    });
  };

  "yourfirebaseapp": {
    ".read": "...",
    ".write": "...",
    "series": {
      ".indexOn": "name"
    }
  }