geoJson 坐标的猫鼬模式

Mongoose Schema for geoJson coordinates

我试图为 geojson 创建一个架构,但在坐标语法方面遇到了一些问题。

这是我当前的代码:

var DataSchema = new Schema({
  properties: {
    title:       { type: String, required: true },
    description: { type: String, required: true },
    date:        { type:Date, default:Date.now }
  },
  geometry: {
       coordinates: []
  }
});

我尝试使用 [](空数组),它创建了 ''[Number,Number] 但它不起作用。

我的问题是:我必须如何构建我的模式才能得到结果

coordinates: [ 3.43434343, 5.543434343 ]

没有引号,这样可以吗?

快速路线

   app.post('/mountain_rescue',  function (req, res){

      new rescueData({properties:{title: req.body.title, description:  req.body.description},geometry:{
     coordinates:req.body.coordinates}}).save(function (e, result) {
             console.log(result);
         });
     res.redirect('/mountain_rescue');
  });

查看

<div id="AddingPanel">
  <form method="post" action="mountain_rescue" >
      Title:<input type="text" name="title">
      Description:<textarea type="text" name="description"></textarea>
      Coordinates:<input type="text" name="coordinates">
      <button type="submit">Add</button>
  </form>

试试这个:

var DataSchema = new Schema({
  properties: {
    title:       { type: String, required: true },
    description: { type: String, required: true },
    date:        { type:Date, default:Date.now }
  },
  geometry: {
       coordinates: {type: Array, required: true}
  }
});

像这样;

var DataSchema = new Schema({
  properties: {
    title:       { type: String, required: true },
    description: { type: String, required: true },
    date:        { type:Date, default:Date.now }
  },
  geometry: {
    coordinates: { type: [Number], index: '2dsphere'}
  }
});

这是您的更新路线处理程序,它将坐标字符串转换为数字数组;

app.post('/mountain_rescue',  function (req, res) {
  new rescueData({
    properties: {
      title: req.body.title, description: req.body.description
    },
    geometry: {
      coordinates:req.body.coordinates.split(',').map(Number)
    }
  }).save(function (e, result) {
    console.log(result);
  });
  res.redirect('/mountain_rescue');
});

GeoJSON 字段必须作为字符串包含在几何类型中。所以 GeoJSON 字段必须像下面这样定义;

geometry: { type: { type: String }, coordinates: [Number] }

或者如果您想定义一个默认值,您可以使用下面的行;

geometry: { type: { type: String, default:'Point' }, coordinates: [Number] }

祝你好运..