How to have default values for properties? [Question]

[ali-habibzadeh]

Let's assume in the model below i don't want to have to set ttl everytime I do a put operation, so I want this set automatically always by default. I did try to make it optional and set it on the mode like below, but that doesn't actually write it to the db.

Is there a current workaround for this?

@Model({ tableName: appConfig.urlsTableName })
export class CrawlUrl {
  @PartitionKey()
  public url!: string;
  public level: number = 0; // <--- This won't be used
  private ttl? = moment().add(1, "days").unix().toString(); // <--- This won't be used
}

[davehensley]

I think you would need to use a constructor:

  constructor(props: { level?: number; ttl?: string }) {
    this.level = props.level || 0;
    this.ttl = props.ttl || moment().add(1, "days").unix().toString();
  }

[davehensley]

Update: there seems to be a new defaultValueProvider feature that was just added: #244

[michaelwittwer]

@ali-habibzadeh I hope that the PR #268 solves your issue, closing this for now.