Data model for storing the dashboards

let dashboardSchema = mongoose.Schema({
  _id: {
      type: ObjectId,
      auto: true,
  },
  name: {
      type: String,
      required: true,
  },
  user: {
      type: String,
      required: true,
  },
  widgets: {
      type: [WIDGET],
      required: true,
  },
  variables: {
      type: Object,
      required: false,
      default: [{}],
  },
  insertTime: {
      type: Date,
      default: Date.now,
  },
  updateTime: {
      type: Date,
      required: true,
      default: Date.now,
  },
  group: {
      type: String,
      required: false,
      default: null,
  },
  groupWriteAccess: {
      type: Boolean,
      required: false,
      default: false,
  },
  lastUpdatedBy: {
      type: String,
      required: false,
      default: null,
  },
  deleted: {
      type: Boolean,
      default: false,
  },
  tangoDB: {
      type: String,
      default: '',
  },
});

const WIDGET = {
  canvas: String,
  id: String,
  x: Number,
  y: Number,
  height: Number,
  width: Number,
  type: { type: String },
  // Necessary since `type' is a reserved word in Mongoose
  inputs: Schema.Types.Mixed,
  order: Number,
};