Assign sfDoctrineActAsKeyValueStorePlugin object values with forms

KeyValueStoreForm.class.php

<?php

/**
 * Allows key-value store values from objects with the ActAsKeyValueStore Doctrine
 * behavior to be populated into form value defaults and also assigned/persisted
 * to with the object using the form.
 *
 * @author John Kary <johnkary@ku.edu>
 */
abstract class KeyValueStoreForm extends sfFormDoctrine
{
    /**
     * Gets object property values and KeyValueStore values.
     *
     * @return array
     */
    protected function getObjectValues()
    {
        $values = $this->getObject()->toArray(false) + $this->getObjectKeyValueStoreValues();

        return $values;
    }

    /**
     * Gets object values for fields representing values presisted using
     * Doctrine behavior KeyValueStore.
     *
     * Customize for each form using an object with KeyValueStore behavior.
     *
     * @return array
     */
    protected function getObjectKeyValueStoreValues()
    {
        return array();
    }

    /**
     * Updates the default values of the form with the current values of the
     * current object.
     *
     * Added support for defaults that come from Doctrine behavior KeyValueStore.
     */
    protected function updateDefaultsFromObject()
    {
        $defaults = $this->getDefaults();

        // update defaults for the main object
        if ($this->isNew()) {
            $defaults = $defaults + $this->getObjectValues();
        } else {
            $defaults = $this->getObjectValues() + $defaults;
        }

        foreach ($this->embeddedForms as $name => $form) {
            if ($form instanceof sfFormDoctrine) {
                $form->updateDefaultsFromObject();
                $defaults[$name] = $form->getDefaults();
            }
        }

        $this->setDefaults($defaults);
    }

    /**
     * Updates the values of the object with the cleaned up values.
     *
     * Overrides default Doctrine implementation to add storage of KeyValueStore
     *
     * @param  array $values An array of values
     * @return mixed The current updated object
     */
    public function updateObject($values = null)
    {
        if (null === $values) {
            $values = $this->values;
        }

        $values = $this->processValues($values);

        $this->doUpdateObject($values);

        //Store form values that are not object properties as key-value store data
        $this->updateObjectKeyValueStoreValues($values);

        // embedded forms
        $this->updateObjectEmbeddedForms($values);

        return $this->getObject();
    }

    /**
     * Sets object values for fields representing values persisted using
     * Doctrine behavior KeyValueStore.
     *
     * Customize for each form using an object with KeyValueStore behavior.
     *
     * @param array $values
     */
    protected function updateObjectKeyValueStoreValues(array $values)
    {

    }
}