Method findCreateFind

src/model.js:2479–2513

* A more performant findOrCreate that may not work under a transaction (working in postgres) * Will execute a find call, if empty then attempt to create, if unique constraint then attempt to find again * * @see * Model.findAll for a full specification of find and options *

(options)

   * @returns {Promise<Model,boolean>}
   */
  static async findCreateFind(options) {
    if (!options || !options.where) {
      throw new Error(
        'Missing where attribute in the options parameter passed to findCreateFind.'
      );
    }

    let values = { ...options.defaults };
    if (_.isPlainObject(options.where)) {
      values = Utils.defaults(values, options.where);
    }


    const found = await this.findOne(options);
    if (found) return [found, false];

    try {
      const createOptions = { ...options };

      // To avoid breaking a postgres transaction, run the create with `ignoreDuplicates`.
      if (this.sequelize.options.dialect === 'postgres' && options.transaction) {
        createOptions.ignoreDuplicates = true;
      }

      const created = await this.create(values, createOptions);
      return [created, true];
    } catch (err) {
      if (!(err instanceof sequelizeErrors.UniqueConstraintError || err instanceof sequelizeErrors.EmptyResultError)) {
        throw err;
      }

      const foundAgain = await this.findOne(options);
      return [foundAgain, false];
    }
  }

  /**
   * Insert or update a single row. An update will be executed if a row which matches the supplied values on either the primary key or a unique key is found. Note that the unique index must be defined in your sequelize model and not just in the table. Otherwise you may experience a unique constraint violation, because sequelize fails to identify the row that should be updated.