Method store

/**
 * Overrides Table::store to check unique fields.
 *
 * @param   boolean  $updateNulls  True to update fields even if they are null.
 *
 * @return  boolean  True on success.
 *
 * @since   2.5.0
 */
public function store($updateNulls = false)
{
    $table = Table::getInstance('Language', 'JTable', array('dbo' => $this->getDbo()));
    // Verify that the language code is unique
    if ($table->load(array('lang_code' => $this->lang_code)) && ($table->lang_id != $this->lang_id || $this->lang_id == 0)) {
        $this->setError(Text::_('JLIB_DATABASE_ERROR_LANGUAGE_UNIQUE_LANG_CODE'));
        return false;
    }
    // Verify that the sef field is unique
    if ($table->load(array('sef' => $this->sef)) && ($table->lang_id != $this->lang_id || $this->lang_id == 0)) {
        $this->setError(Text::_('JLIB_DATABASE_ERROR_LANGUAGE_UNIQUE_IMAGE'));
        return false;
    }
    // Verify that the image field is unique
    if ($this->image && $table->load(array('image' => $this->image)) && ($table->lang_id != $this->lang_id || $this->lang_id == 0)) {
        $this->setError(Text::_('JLIB_DATABASE_ERROR_LANGUAGE_UNIQUE_IMAGE'));
        return false;
    }
    return parent::store($updateNulls);
}