mongo.js

const schema = new Mongo.Schema({
  ...baseFields, // baseFields includes createdAt, createdBy, updatedAt, updatedBy
  id: String,
  title: String, // "Task Created"
  description: String, // "Anthony created a task for Jessica"
  activityType: {
    // list of all possible types
    type: String,
    enum: [
      'noteAdded', // when somebody adds a note
      'projectActivity', // general catchall for when a project is created/updated
      'attachmentAdded', // when an attachment is added to something (project, business profile, contact profile, etc)
      'taskAdded', // when somebody adds a task to something (project, business profile, contact profile, etc)
    ],
  },
  parent: {
    type: String,
    enum: ['business', 'contact', 'project'], // different modules in the app have activity feeds... they're similar enough to all use this same collection
  },
  parentId: String, // the mongo ID of the business profile, project or contact this activity item relates to... used to query the activity feed
  sourceId: String, // id of the mongodb document related to this
  sourceType: String, // collection name of the source... Tasks, Attachments, Notes, etc... sourceId+sourceType helps you find the relevant record for linking etc
});