enable zfdebug through resource registration

application.ini

[production]
phpSettings.display_startup_errors = 0
phpSettings.display_errors = 0
phpSettings.date.time_zone = "Europe/Vilnius"
includePaths.library = APPLICATION_PATH "/../library"
bootstrap.path = APPLICATION_PATH "/Bootstrap.php"
bootstrap.class = "Bootstrap"
appnamespace = "Application"
resources.view[] =
resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"
resources.frontController.params.displayExceptions = 0
resources.layout.layoutPath = APPLICATION_PATH "/views/layouts"

autoloaderNamespaces[] = "Core"
autoloaderNamespaces[] = "Doctrine"

doctrine.dsn = "mysql://username:password@host/db_name"
doctrine.models_path = APPLICATION_PATH "/models"
doctrine.data_fixtures_path = APPLICATION_PATH "/configs/data/fixtures"
doctrine.sql_path = APPLICATION_PATH "/configs/data/sql"
doctrine.migrations_path = APPLICATION_PATH "/configs/migrations"
doctrine.yaml_schema_path = APPLICATION_PATH "/configs/schema.yml"
doctrine.model_autoloading = 2

[staging : production]

[testing : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1

doctrine.model_autoloading = 1

[development : production]
resources.Core_Application_Resource_ZFDebug.enabled = true
resources.Core_Application_Resource_ZFDebug.params.plugins[] = "Variables"
resources.Core_Application_Resource_ZFDebug.params.plugins.File.base_path = APPLICATION_PATH "/../"
resources.Core_Application_Resource_ZFDebug.params.plugins[] = "Memory"
resources.Core_Application_Resource_ZFDebug.params.plugins[] = "Time"
resources.Core_Application_Resource_ZFDebug.params.plugins[] = "Registry"
resources.Core_Application_Resource_ZFDebug.params.plugins[] = "Exception"

phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1
resources.frontController.params.displayExceptions = 1

doctrine.model_autoloading = 1

ZFDebug.php

<?php

/**
 * This class provides a resource that setup the ZFDebug plugin
 *
 * @see http://code.google.com/p/zfdebug/
 *
 */
class Core_Application_Resource_ZFDebug extends Zend_Application_Resource_ResourceAbstract {

    /**
     * @var boolean
     */
    protected $_init = false;

    /**
     * @var boolean
     */
    protected $_enabled = false;

    /**
     * @var array
     */
    protected $_params = array ();

    /**
     * Set plugin options
     *
     * @param array $params
     */
    public function setParams(array $params) {
        $this->_params = $params;
    }

    /**
     * Return plugin options
     *
     * @return array
     */
    public function getParams() {
        return $this->_params;
    }

    /**
     * Activate plugin
     *
     * @param boolean $enabled
     */
    public function setEnabled($enabled) {
        $this->_enabled = (boolean) $enabled;
    }

    /**
     * Return true iff plugin should be enabled
     *
     * @return boolean
     */
    public function getEnabled() {
        return $this->_enabled;
    }

    /**
     * Defined by Zend_Application_Resource_Resource
     */
    public function init() {
        $this->initDebugPlugin();
    }

    /**
     * Initialize ZFDebug plugin
     */
    public function initDebugPlugin() {
        if (!$this->_init && $this->getEnabled()) {
            // execute once
            $this->_init = true;
            // plugin options
            $options = $this->getParams();
            // bootstrap database
            if (isset($options['plugins']['Database'])) {
                if ($this->getBootstrap()->hasPluginResource('db')) {
                    $this->getBootstrap()->bootstrap('db');
                }
            }
            // normalize base_path with realpath
            if (isset($options['plugins']['File']['base_path'])) {
                $options['plugins']['File']['base_path'] = realpath(
                        $options['plugins']['File']['base_path']);
            }
            // register namespace
            $autoloader = Zend_Loader_Autoloader::getInstance();
            $autoloader->registerNamespace('ZFDebug');
            // ensure frontcontroller is initializated
            $this->getBootstrap()->bootstrap('frontController');
            // instantiate plugin
            $debug = new ZFDebug_Controller_Plugin_Debug(
                    $options);
            // add plugin to front controller
            $frontController = $this->getBootstrap()->getResource(
                    'frontController');
            $frontController->registerPlugin($debug);
        }
    }
}