Method _invokeCustomValidator

lib/instance-validator.js:248–281

* Prepare and invoke a custom validator. * * @private * * @param {Function} validator The custom validator. * @param {string} validatorType the custom validator type (name). * @param {boolean} optAttrDefined Set to true if custom validator was defined from the attribute * @param

(validator, validatorType, optAttrDefined, optValue, optField)

   * @returns {Promise} A promise.
   */
  async _invokeCustomValidator(validator, validatorType, optAttrDefined, optValue, optField) {
    let isAsync = false;

    const validatorArity = validator.length;
    class="cm">// check if validator is async and requires a callback
    let asyncArity = 1;
    let errorKey = validatorType;
    let invokeArgs;
    if (optAttrDefined) {
      asyncArity = 2;
      invokeArgs = optValue;
      errorKey = optField;
    }
    if (validatorArity === asyncArity) {
      isAsync = true;
    }

    if (isAsync) {
      try {
        if (optAttrDefined) {
          return await promisify(validator.bind(this.modelInstance, invokeArgs))();
        }
        return await promisify(validator.bind(this.modelInstance))();
      } catch (e) {
        return this._pushError(false, errorKey, e, optValue, validatorType);
      }
    }

    try {
      return await validator.call(this.modelInstance, invokeArgs);
    } catch (e) {
      return this._pushError(false, errorKey, e, optValue, validatorType);
    }
  }

  /**
   * Prepare and invoke a build-in validator.