Sails.JS findOne不返回Association

我有一个函数可以根据地理坐标查找资源，但是findOne方法不会返回模型中的注释集合。 如果我使用蓝图路线根据ID查找，我会收到评论。

find：ID JSON

{ "comments": [ { "text": "Some Text", "nomination": "551865064a5ccf41274be682", "createdAt": "2015-03-29T21:02:10.586Z", "updatedAt": "2015-03-29T21:02:10.586Z", "id": "55186852d21850a627292db3" } ], "name": "Karma Bird House", "address": "47 Maple Street Burlington, VT 05401", "geo": "44.473231,-73.217882", "lat": 44.473231, "lon": -73.217882, "streetImg": "http://maps.googleapis.com/maps/api/streetview?size=800x300&location=44.473231,-73.217882", "votes": 1, "createdAt": "2015-03-29T20:48:06.109Z", "updatedAt": "2015-03-29T21:02:48.817Z", "id": "551865064a5ccf41274be682" } 

findGeo：id JSON

 { "nom": { "name": "Karma Bird House", "address": "47 Maple Street Burlington, VT 05401", "geo": "44.473231,-73.217882", "lat": 44.473231, "lon": -73.217882, "streetImg": "http://maps.googleapis.com/maps/api/streetview?size=800x300&location=44.473231,-73.217882", "votes": 1, "createdAt": "2015-03-29T20:48:06.109Z", "updatedAt": "2015-03-29T21:02:48.817Z", "id": "551865064a5ccf41274be682" } } 

findGeo方法

 findGeo: function (req, res, next) { Nomination.findOne({geo: req.param('id')}, function foundNomination(err, nom) { if(err) return next(err); if(!nom) return next(); return res.json({ nom: nom }); }) } 

模型：

 module.exports = { attributes: { id:{ type:"int", primaryKey: true, autoIncrement: true }, // Location's name name: { type: 'string', required: true }, // Locations Lat and lon lat: 'float', lon: 'float', // lat,lon geo: { type: 'string', unique: true }, // Location's Address address: { type: 'string', required: true }, // Number of Votes votes: { type: 'integer', defaultsTo: '0' }, // Street View Image streetImg: 'string', // Association of comments comments: { collection: 'comment', via: 'nomination' } } }; 

Answer 1

你需要使用如下的“填充”方法：

 findGeo: function (req, res, next) { Nomination .findOne({geo: req.param('id')}) .populate('comments') .exec(function (nom) { if(!nom) return next(); return res.json({ nom: nom }); }); }