Sailsjs地理空间解决方案与水线 | Sailsjs地理空间解决方案与水线

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问题描述

似乎Sailsjs / Waterline目前不支持使用JSON的POINT类型或地理空间索引。

It seems like Sailsjs/Waterline does not currently support a POINT type or geospatial indexing with JSON.

有没有办法为某些适配器自定义架构以支持地理空间数据类型？

Are there any ways to customize a schema for certain adapters to support geospatial datatypes?

如果没有，是有没有办法将第二个ORM集成到Waterline中呢？

If not, is there a way to integrate a second ORM into Waterline that does so?

推荐答案

在Sails.js中，你需要MongoDB（npm install --save sails-mongo）用于地理空间索引，另外你需要确保在config / bootstrap.js中创建2dindex（确保根据你的特定需求替换modelname和attributename）：

In Sails.js, you need MongoDB (npm install --save sails-mongo) for geospatial indexing, plus you need to ensure the 2dindex gets created in config/bootstrap.js as such (make sure to replace modelname and attributename for your particular needs):

module.exports.bootstrap = function(cb) {

  // Ensure we have 2dsphere index on coordinates attribute of Place.
  sails.models.modelname.native(function (err, collection) {
    collection.ensureIndex({ attributename: '2dsphere' }, function () {

    // It's very important to trigger this callback method when you are finished
    // with the bootstrap!  (otherwise your server will never lift, since it's waiting on the bootstrap)
    cb();

    });
  });

};

另请注意，您必须使用本机MongoDB地理空间查询，这超出了您的问题的范围。我已经发布了一个示例实现

Also note that you have to use native MongoDB geospatial queries, which is beyond the scope of your question. I've posted an example implementation here

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