public function onRelationManageCreate()
    {
        $this->forceManageMode = 'form';
        $this->beforeAjax();
        $saveData = $this->manageWidget->getSaveData();
        $sessionKey = $this->deferredBinding ? $this->relationGetSessionKey(true) : null;

        if ($this->viewMode == 'multi') {
            $newModel = $this->relationModel;

            /*
             * In special cases, has one/many will require a foreign key set
             * to pass any constraints imposed by the database. This emulates
             * the "create" method on the relation object.
             */
            if (in_array($this->relationType, ['hasOne', 'hasMany'])) {
                $newModel->setAttribute(
                    $this->relationObject->getForeignKeyName(),
                    $this->relationObject->getParentKey()
                );
            }

            $modelsToSave = $this->prepareModelsToSave($newModel, $saveData);
            foreach ($modelsToSave as $modelToSave) {
                $modelToSave->save(null, $this->manageWidget->getSessionKey());
            }

            $this->relationObject->add($newModel, $sessionKey);
        }
        elseif ($this->viewMode == 'single') {
            $newModel = $this->viewModel;
            $this->viewWidget->setFormValues($saveData);

            /*
             * Has one relations will save as part of the add() call.
             */
            if ($this->deferredBinding || $this->relationType != 'hasOne') {
                $newModel->save(null, $this->manageWidget->getSessionKey());
            }

            $this->relationObject->add($newModel, $sessionKey);

            /*
             * Belongs to relations won't save when using add() so
             * it should occur if the conditions are right.
             */
            if (!$this->deferredBinding && $this->relationType == 'belongsTo') {
                $parentModel = $this->relationObject->getParent();
                if ($parentModel->exists) {
                    $parentModel->save();
                }
            }
        }

        return $this->relationRefresh();
    }