地図移動応用実戦:Ionic ElasticSearch検索サービス

xml 
                
                    
{{result.title}}
                    
  : {{result.body}}
                    

                        {{result.location_info}}
                    
                    

                        {{result.phone_number}}
                    
                
            

$scope.query = "";
var doSearch = ionic.debounce(function(query) {
    ESService.search(query, 0).then(function(results){
        $scope.results = results;
    });
}, 500);

$scope.search = function(query) {
    doSearch(query);
}

angular.module('starter.services', ['ngCordova', 'elasticsearch'])

.factory('ESService',
  ['$q', 'esFactory', '$location', '$localstorage', function($q, elasticsearch, $location, $localstorage){
    var client = elasticsearch({
      host: $location.host() + ":9200"
    });

    var search = function(term, offset){
      var deferred = $q.defer(), query, sort;
      if(!term){
        query = {
          "match_all": {}
        };
      } else {
        query = {
          match: { title: term }
        }
      }

      var position = $localstorage.get('position');

      if(position){
        sort = [{
          "_geo_distance": {
            "location": position,
            "unit": "km"
          }
        }];
      } else {
        sort = [];
      }

      client.search({
        "index": 'haystack',
        "body": {
          "query": query,
          "sort": sort
        }
      }).then(function(result) {
        var ii = 0, hits_in, hits_out = [];
        hits_in = (result.hits || {}).hits || [];
        for(;ii < hits_in.length; ii++){
          var data = hits_in[ii]._source;
          var distance = {};
          if(hits_in[ii].sort){
            distance = {"distance": parseFloat(hits_in[ii].sort[0]).toFixed(1)}
          }
          angular.extend(data, distance);
          hits_out.push(data);
        }
        deferred.resolve(hits_out);
      }, deferred.reject);

      return deferred.promise;
    };


    return {
      "search": search
    };
  }]
);