Backend\Modules\Locale\Actions\Add::validateForm PHP Метод

    private function validateForm()
    {
        if ($this->frm->isSubmitted()) {
            $this->frm->cleanupFields();
            // redefine fields
            $txtName = $this->frm->getField('name');
            $txtValue = $this->frm->getField('value');
            // name checks
            if ($txtName->isFilled(BL::err('FieldIsRequired'))) {
                // allowed regex (a-z and 0-9)
                if ($txtName->isValidAgainstRegexp('|^([a-z0-9])+$|i', BL::err('InvalidName'))) {
                    // first letter does not seem to be a capital one
                    if (!in_array(mb_substr($txtName->getValue(), 0, 1), range('A', 'Z'))) {
                        $txtName->setError(BL::err('InvalidName'));
                    } else {
                        // this name already exists in this language
                        if (BackendLocaleModel::existsByName($txtName->getValue(), $this->frm->getField('type')->getValue(), $this->frm->getField('module')->getValue(), $this->frm->getField('language')->getValue(), $this->frm->getField('application')->getValue())) {
                            $txtName->setError(BL::err('AlreadyExists'));
                        }
                    }
                }
            }
            // value checks
            if ($txtValue->isFilled(BL::err('FieldIsRequired'))) {
                // in case this is a 'act' type, there are special rules concerning possible values
                if ($this->frm->getField('type')->getValue() == 'act') {
                    if (rawurlencode($txtValue->getValue()) != CommonUri::getUrl($txtValue->getValue())) {
                        $txtValue->addError(BL::err('InvalidValue'));
                    }
                }
            }
            // module should be 'core' for any other application than backend
            if ($this->frm->getField('application')->getValue() != 'Backend' && $this->frm->getField('module')->getValue() != 'Core') {
                $this->frm->getField('module')->setError(BL::err('ModuleHasToBeCore'));
            }
            if ($this->frm->isCorrect()) {
                // build item
                $item['user_id'] = BackendAuthentication::getUser()->getUserId();
                $item['language'] = $this->frm->getField('language')->getValue();
                $item['application'] = $this->frm->getField('application')->getValue();
                $item['module'] = $this->frm->getField('module')->getValue();
                $item['type'] = $this->frm->getField('type')->getValue();
                $item['name'] = $this->frm->getField('name')->getValue();
                $item['value'] = $this->frm->getField('value')->getValue();
                $item['edited_on'] = BackendModel::getUTCDate();
                // update item
                $item['id'] = BackendLocaleModel::insert($item);
                // trigger event
                BackendModel::triggerEvent($this->getModule(), 'after_add', array('item' => $item));
                // everything is saved, so redirect to the overview
                $this->redirect(BackendModel::createURLForAction('Index', null, null, null) . '&report=added&var=' . rawurlencode($item['name']) . '&highlight=row-' . $item['id'] . $this->filterQuery);
            }
        }
    }