How can I use MongoDB to find documents that match with custom field?

Question

I am trying to find all documents that match with custom field in node.js.

node.js code:

req.app.db.models.Property.find({
  user: {
    id: req.params.id
  }
}).exec(function(err, user) {
  if (err) {
    return next(err);
  }
  console.log("id:" + req.params.id);
  console.log("user:" + user);
  res.status(200).json(user);
});

But, console shows like this

id:5941cfc42df14b2fe811d531
user:

And the schema is like below

user: {
      id: { type: mongoose.Schema.Types.ObjectId, ref: 'User' },
      name: { type: String, default: '' },
      email: { type: String, defaul: ''}
    },
propertyType: { type: String, default: '' },
    ..........
    }

It seems that it can't find documents. What's wrong with this? Several documents exist on Property Collection.

Answer 1

The problem is in your query, its finding a user having an object id only. So what you are actually equating is "user" with "{ id: req.params.id }" which return only id parameter. So for your solution do following:

var query = {'user.id':req.params.id}
Property.find(query).exec(function(err, user) {
  if (err) {
    return next(err);
  }

if you want to specify the type of object returned, if found. You can mention it as follows:

Property.find(query,'user.id user.name').exec(...)

this will return an object with user id and email only and not the name.