Enable or disable DebugKit depending on user setting

I am developing a cms (content management system) using cakephp 3, and would like the user of the cms to be able to enable and disable the debugkit through an administrator form.

I store this choice in database. Problem is, DebugKit is initiated in bootstrap.php, before the value are read from database. I read the value in AppController::initialize(), way too late in the cakephp page load ride.

Is there a better way to let the user enable/disable debugging than letting them edit app.php?

Thank’s for any tips or heads-ups!

Just to clarify:

For some reason I cannot use the TableRegistry in bootstrap.php. I get the following exception:
Fatal error: Uncaught Cake\Datasource\Exception\MissingDatasourceConfigException: The datasource configuration “default” was not found.

I have the following line:

use Cake\ORM\TableRegistry;

Further down in code:

$kitchenSink = TableRegistry::get(‘KitchenSink’);

And it is this line of code where the exception happens.

You should put the code at the bottom of the bootstrap, after all the calls to Configure are made

Hi raul338,
that is what I have done, it is at the very bottom of the file bootstrap.php.

I never checked in the code with the kitchensink, but the it was at line 256 here at github:
(sorry for the incomplete url, I am not allowed to put full links)

I have done this using ConfigEngineInterface
Read key/values from database and set with Configure::load()


namespace App\Configure\Engine;

use Cake\Core\Configure\ConfigEngineInterface;
use Cake\ORM\TableRegistry;

class DataBaseConfig implements ConfigEngineInterface
    public function __construct($configureClass = null)
        if (!$configureClass) {
            $configureClass = 'ConfigDB';
        $this->_configureClass = $configureClass;

    public function read($key)
        $configArray = [];
        $configureDB = TableRegistry::get($this->_configureClass);
        $configArray = $configureDB->getDbConfig();
          Muffin plugin fix - https://github.com/UseMuffin/Footprint#warning
        return $configArray;


namespace App\Model\Table;

use Cake\ORM\Table;
use Cake\Validation\Validator;

class ConfigDBTable extends Table
    public function initialize(array $config)
        //  id | key | value | type_id | enabled | description 
        // key should be the configure() array key ex: AppConfig.DebugKit.enable
        // value example: true/false
        $this->addBehavior('Timestamp', [
            'events' => [
                'Model.beforeSave' => [
                    'created' => 'new',
                    'modified' => 'always'

    public function validationDefault(Validator $validator)
        return $validator;

    public function parseVar($var, $type)
        $parsedVar = $var;
        switch ($type) {
            case 1:
                $parsedVar = strval($var);
            case 2:
                $parsedVar = intval($var);
            case 3:
                $parsedVar = floatval($var);
            case 4:
                $parsedVar = boolval($var);
                $parsedVar = $var;
        return $parsedVar;

    public function getDbConfig()
        $configVars = $this->find()
            ->select(['key', 'value', 'type_id'])
            ->where(['enabled' => 1]);
        if (empty($configVars )) {
        foreach ($configVars as $configVar) {
            $configArray[$configVar->key] = $this->parseVar($configVar->value, $configVar->type_id);
        return $configArray;


try {
    Configure::config('db', new DataBaseConfig());
    Configure::load('db-setup', 'db', false);
} catch (\Exception $e) {
    exit($e->getMessage() . "\n");

use in debugkit or email config etc

'debug' => filter_var(env('DEBUG', \Cake\Core\ConfigureConfigure::read('AppConfig.DebugKit.enable')), FILTER_VALIDATE_BOOLEAN),

'EmailTransport' => [
        'default' => [
            'className' => 'Cake\Mailer\Transport\SmtpTransport',
            // The following keys are used in SMTP transports
            'host' => Configure::read('Email.Contact.host'),
            'port' => Configure::read('Email.Contact.port'),