Method save

src/model.js:3986–4242

* Validates this instance, and if the validation passes, persists it to the database. * * Returns a Promise that resolves to the saved instance (or rejects with a `Sequelize.ValidationError`, which will have a property for each of the fields for which the validation failed, with the error mess

(options)

   * @returns {Promise<Model>}
   */
  async save(options) {
    if (arguments.length > 1) {
      throw new Error('The second argument was removed in favor of the options object.');
    }

    options = Utils.cloneDeep(options);

    // Add CLS transaction
    if (options.transaction === undefined && this.sequelize.constructor._cls) {
      const t = this.sequelize.constructor._cls.get('transaction');
      if (t) {
        options.transaction = t;
      }
    }

    options = _.defaults(options, {
      hooks: true,
      validate: true
    });

    if (!options.fields) {
      if (this.isNewRecord) {
        options.fields = Object.keys(this.constructor.rawAttributes);
      } else {
        options.fields = _.intersection(this.changed(), Object.keys(this.constructor.rawAttributes));
      }

      options.defaultFields = options.fields;
    }

    if (options.returning === undefined) {
      if (options.association) {
        options.returning = false;
      } else if (this.isNewRecord) {
        options.returning = true;
      }
    }

    const primaryKeyName = this.constructor.primaryKeyAttribute;
    const primaryKeyAttribute = primaryKeyName && this.constructor.rawAttributes[primaryKeyName];
    const createdAtAttr = this.constructor._timestampAttributes.createdAt;
    const versionAttr = this.constructor._versionAttribute;
    const hook = this.isNewRecord ? 'Create' : 'Update';
    const wasNewRecord = this.isNewRecord;
    const now = Utils.now(this.sequelize.options.dialect);
    let updatedAtAttr = this.constructor._timestampAttributes.updatedAt;

    if (updatedAtAttr && options.fields.length > 0 && !options.fields.includes(updatedAtAttr)) {
      options.fields.push(updatedAtAttr);
    }
    if (versionAttr && options.fields.length > 0 && !options.fields.includes(versionAttr)) {
      options.fields.push(versionAttr);
    }

    if (options.silent === true && !(this.isNewRecord && this.get(updatedAtAttr, { raw: true }))) {
      // UpdateAtAttr might have been added as a result of Object.keys(Model.rawAttributes). In that case we have to remove it again
      _.remove(options.fields, val => val === updatedAtAttr);
      updatedAtAttr = false;