code: function(value, attr, minLength, model) {
          if (!_.isString(value) || value.length < minLength) {
            return this.format(getMessageKey(this.msgKey, defaultMessages.minLength), this.formatLabel(attr, model), minLength);
          }
        }
docs: Min length validator Validates that the value has to be a string with length equal to or greater than the min length value specified