text: var mongoose = require('mongoose');
  var Schema = mongoose.Schema;
  
  var schemaOptions = {
  	toObject: {
  		virtuals: true
  	},
  	toJSON: {
  		virtuals: true
  	}
  };
  
  var schema = new Schema({
  
  	proposition: {
  		type: Schema.Types.ObjectId,
  		ref: 'Proposition'
  	},
  	geo: Schema.Types.Mixed
  
  }, schemaOptions);
  
  schema.virtual('id').get(function () {
  	return this._id.toHexString();
  });
  
  module.exports = mongoose.model('GeoData', schema);