Snippet showing how to store location for Activity Streams in MongoDB via Mongoose

types.js

var LocationHash = {
  displayName: {type: String},
  position: {
    latitude: Number,
    longitude: Number
  }
};

var ActivityObjectHash = {
  id: {type: String},
  image: {type: MediaLinkHash, default: null},
  icon: {type: MediaLinkHash, default: null},
  displayName: {type: String},
  summary: {type: String},
  content: {type: String},
  url: {type:String},
  published: {type: Date, default: null},
  objectType: {type: String},
  updated: {type: Date, default: null},
  location: LocationHash,
  fullImage : {type: MediaLinkHash, default: null},
  thumbnail : {type: MediaLinkHash, default: null},
  author : {type: ObjectId, ref: "activityObject"},
  attachments : [{type: ObjectId, ref: 'activityObject'}],
  upstreamDuplicates : [{type: String, default: null}],
  downstreamDuplicates : [{type: String, default: null}]
};

For the complete file see https://github.com/ciberch/activity-streams-mongoose/blob/master/lib/activityMongoose.js#L15