Is it possible to have a 2dsphere index without requiring a location field?

[Nik Macintosh]

I have a mongoose schema and model defined as follows:

var mongoose = require('mongoose')
  , Schema = new mongoose.Schema({
      email: {
        index: {
          sparse: true,
          unique: true
        },
        lowercase: true,
        required: true,
        trim: true,
        type: String
      },
      location: {
        index: { sparse: true, type: '2dsphere' },
        type: [Number]
      }
    })
  , User = module.exports = mongoose.model('User', Schema);

If I attempt:

var user = new User({ email: 'us...@example.com' });

user.save(function(err) {
  if (err) return done(err);

  should.not.exist(err);
  done();
});

I receive the error message:

MongoError: Can't extract geo keys from object, malformed geometry?:{}

Despite the location field in this schema not being required, it seems to be acting as such anyways. I have tried adding default: [0,0] which does circumvent this error, however it seems like a bit of a hack, as this is clearly not a good default, and ideally the schema would not require the user to have a location at all times.

Do geospatial indexes with MongoDB / mongoose imply that the field being indexed is required?

On StackOverflow: http://stackoverflow.com/questions/16388836/does-applying-a-2dsphere-index-on-a-mongoose-schema-force-the-location-field-to

[Aaron Heckmann]

answered on Stack Overflow

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Aaron

@aaronheckmann