Question

我希望了解如何从Fusion Tables（FT）更新jqGrid表 -

目前我可以在Google地图上搜索或滚动，发送一个事件监听器来编译视口/地图的空间边界的FT查询，以获得一组新的结果。我想使用新的FT查询字符串（或者可以使用Google代码检索数据 - query.send（getData）;）以使用新值更新jqGrid表。

在我开始使用jqGrid之前，我尝试/取代了Google Visualization API，其中一些代码如下。任何人都可以建议如何从table.draw移动到加载/重新加载jqGrid表？非常感谢。

function tilesLoaded() {
        google.maps.event.clearListeners(map, 'tilesloaded');
        google.maps.event.addListener(map, 'zoom_changed', getSpatialQuery);
        google.maps.event.addListener(map, 'dragend', getSpatialQuery);
        getSpatialQuery();  
    }   

    function getSpatialQuery() {
      sw = map.getBounds().getSouthWest();
      ne = map.getBounds().getNorthEast();
      var spatialQuery = "ST_INTERSECTS(latitude, RECTANGLE(LATLNG(" + sw.lat() + "," + sw.lng() + "), LATLNG(" + ne.lat() + "," + ne.lng() + ")))";

      changeDataTable(spatialQuery);
    }

function changeDataTable(spatialQuery) {
  var whereClause = "";
  if(spatialQuery) {
    whereClause =  " WHERE " + spatialQuery;
  }
  var queryText = encodeURIComponent("SELECT 'latitude', 'longitude', 'name' FROM xxxxxxxx" + whereClause + " LIMIT 50");
  var query = new google.visualization.Query('http://www.google.com/fusiontables/gvizdata?tq='  + queryText);
  query.send(getData);
}

function getData(response) {
  var table = new google.visualization.Table(document.getElementById('visualization'));
  table.draw(response.getDataTable(), {showRowNumber: true});
}

哦，我用Oleg的代码jqGrid returns blank cells作为基础，看看我是否能得到一个简单的多选表来从我的FT中提取数据 - 这对于简单的mod

工作得很好

url：'http://www.google.com/fusiontables/api/query?sql='+

Answer 1

如果这对某人有帮助，我已经采取了一些我想出的代码并粘贴在下面：

// You can get the map bounds via then pass it via a function (below is hacked from several functions
sw = map.getBounds().getSouthWest();
ne = map.getBounds().getNorthEast();
var whereClause = "ST_INTERSECTS(latitude, RECTANGLE(LATLNG(" + sw.lat() + "," + sw.lng() + "), LATLNG(" + ne.lat() + "," + ne.lng() + ")))";

//construct the URL to get the JSON
var queryUrlHead = 'http://www.google.com/fusiontables/api/query?sql=';
var queryUrlTail = '&jsonCallback=?'; // 
var queryOrderBy = ' ORDER BY \'name\' ASC';
var queryMain = "SELECT * FROM " + tableid + whereClause + queryOrderBy + " LIMIT 100";
var queryurl = encodeURI(queryUrlHead + queryMain + queryUrlTail);

//use the constructed URL to update the jqGrid table - this is the part that I didn't know in my above question
$("#gridTable").setGridParam({url:queryurl});
$("#gridTable").jqGrid('setGridParam',{datatype:'jsonp'}).trigger('reloadGrid');

使用Google Maps v3页面中的Fusion Tables查询结果更新jqGrid表

1 个答案: