sutando/src/browser/relations/concerns/supports-default-models.js

A modern Node.js ORM. Makes it enjoyable to interact with your database. Support Mysql, MSSql, MariaDB, Sqlite.

const SupportsDefaultModels = (Relation) => {
  return class extends Relation {
    _withDefault;

    withDefault(callback = true) {
      this._withDefault = callback;

      return this;
    }

    getDefaultFor(parent) {
      if (! this._withDefault) {
        return null;
      }

      const instance = this.newRelatedInstanceFor(parent);

      if (typeof this._withDefault === 'function') {
        return this._withDefault(instance, parent) || instance;
      }

      if (typeof this._withDefault === 'object') {
        for (const key in this._withDefault) {
          instance.setAttribute(key, this._withDefault[key]);
        }
      }

      return instance;
    }
  }
}

module.exports = SupportsDefaultModels;