jqgrid json reader for geoJson

时间:2011-10-28 18:22:51

标签: php json jqgrid geojson jsonreader

我有一个PHP脚本,可以从数据库中提取有效的GeoJSON数据。现在我想用jqgrid准备这些数据的网格视图,但我无法找出javascript代码的正确jsonReader。

这是我的GeoJSON输出:

{"type":"FeatureCollection",
"total":0, 
"page":1, 
"records":117, 
"features":[
     {"geometry":{"type":"Point","coordinates":[12.3,41.70052]},
      "type":"Feature",
      "properties":{
      "data":"2006-02-22",
      "specie":"S. coeruleoalba",
      "localita":"Ostia",
      "provincia":"Roma"
     },"id":0},
    {"geometry":{
     "type":"Point","coordinates":[15.26667,40.0502]},
     "type":"Feature",
     "properties":{
        "data":"2006-03-01",
        "specie":"S. coeruleoalba",
        "localita":"Golfo di Salerno",
        "provincia":"Salerno"
     },"id":1},
    {"geometry":{"type":"Point","coordinates":[14.88333,40.56692]},
     "type":"Feature",
     "properties":{
        "data":"2006-03-03",
        "specie":"S. coeruleoalba",
        "localita":"Battipaglia",
        "provincia":"Salerno"
    },"id":2}

]}

使用此阅读器,我的网格显示正确的行数(117)和页面,但空单元格

jsonReader : { 
    root: "features", 
    page: "page", 
    total: "total", 
    records: "records", 
    repeatitems: false, 
    cell: "properties", 
    id: "id"
}

有人可以帮我写一个有效的读者吗?提前致谢

1 个答案:

答案 0 :(得分:0)

您的主要错误是您尝试使用cell: "properties",但cell属性将被忽略,以防repeatitems: false属性使用。

你应该使用

jsonReader: {
    root: "features",
    repeatitems: false
}

然后为每列定义jsonmap属性。例如,您可以使用以下列定义:

colModel: [
    {name: 'coordX', jsonmap:'geometry.coordinates.0', width: 75, sorttype: 'number',
        formatter: 'number', formatoptions: {decimalPlaces: 5}},
    {name: 'coordY', jsonmap:'geometry.coordinates.1', width: 75, sorttype: 'number',
        formatter: 'number', formatoptions: {decimalPlaces: 5}},
    {name: 'data', jsonmap:'properties.data', width: 90, align: 'center',
        sorttype: 'date', datefmt: 'm/d/Y',
        formatter: 'date', formatoptions: {newformat: 'm/d/Y'}},
    {name: 'specie', jsonmap:'properties.specie', width: 100},
    {name: 'localita', jsonmap:'properties.localita', width: 100},
    {name: 'provincia', jsonmap:'properties.provincia', width: 80}
]

结果,您将能够将JSON数据读取到以下网格:

enter image description here

(参见演示here)。在您的JSON数据中,我仅将total值从0更改为1,因为将total值减少为page值无意义。