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Custom Global properties (variables)

#1
[eluser]alexdemers[/eluser]
Hey, I want to have properties (or variables) globally accessible throughout every class I use in the CI framework. Basically, I get my options from the database (locale, timezone, number of results per page for pagination) and I want them available in models, controllers and function (using global $var). i do not want to use a config file since it's stored in the database and I do some processing on those settings before having them available to the developer. Also, if possible, to have access to them very early in the script execution.

Am I missing something in the docs that can help me? If not, how can it be done efficiently?

Thanks.

#2
[eluser]umefarooq[/eluser]
for this create a library name what every you like, libraries can be access any where in CI, in controller, helpers, model, you can use variables as global variable and can populate through database.

#3
[eluser]WanWizard[/eluser]
I just load them from my configuration table and add them to the config class, so I can access them the CI standard way, as if they were loaded from a config file.

Code:
/**
* loads the configuration from the configuration table
*
* @param void
* @return void
*/
function load_config()
{
    // retrieve all configuration items
    $query = $this->db->get('configuration');

    // loop through the results
    foreach ($query->result_array() as $row)
    {
        if ( $row['config_module'] == 'exitecms' )
        {
            // store internal items directly
            $this->config->config['exitecms'][$row['config_name']] = $row['config_value'];

            // config values that need to be copied to the CI config
            switch($row['config_name'])
            {
                case 'locale':
                    // set the CI language to the locale defined in the configuration
                    $this->config->config['language'] = $row['config_value'];
                    break;
                case 'login_expire':
                    // set the CI session timeout to the login expire value defined in the configuration
                    $this->config->config['sess_expiration'] = $row['config_value'];
                    break;
                case 'log_threshold':
                    // do we need to enable xdebug?
                    if ( $row['config_value'] == 5 && function_exists('xdebug_start_trace') )
                    {
                        xdebug_start_trace($this->config->config['log_path'].date('YmdHis').'.trace.log');
                        $row['config_value'] = 4;

                    }
                    // we need to inform the Log library of a modified threshold
                    if ( $row['config_value'] != $this->config->config[$row['config_name']] )
                    {
                        // need the fetch the object, the class is not available via the superobject
                        $LOG =& load_class('Log');
                        // logging disabled?
                        if ( $row['config_value'] == 0 )
                        {
                            $LOG->_enabled = FALSE;
                        }
                        else
                        {
                            $LOG->_threshold = $row['config_value'];
                        }
                    }
                case 'country':
                case 'timezone':
                case 'url_suffix':
                case 'encryption_key':
                case 'uri_protocol':
                    // copy these values to their CI equivalent
                    $this->config->config[$row['config_name']] = $row['config_value'];
                    break;
                case 'compress_output':
                    // the output library requires a boolean here
                    $this->config->config[$row['config_name']] = (bool) $row['config_value'];
                    break;
                default:
                    // skip the rest
                    break;
            }

        }
        else
        {
            // store module items in a module per array
            if ( ! isset($this->config->config['exitecms'][$row['config_module']]) )
            {
                $this->config->config['exitecms'][$row['config_module']] = array();
            }
            $this->config->config['exitecms'][$row['config_module']][$row['config_name']] = $row['config_value'];
        }
    }

    // create the email configuration array
    $config = array(
        'useragent' => 'ExiteCMS v' . $this->config->item('version', 'exitecms') . '.' . $this->config->item('revision', 'exitecms'),
        'protocol' => 'mail',
        'smtp_host' => $this->config->item('smtp_host', 'exitecms'),
        'smtp_port' => 25,
        'smtp_timeout' => 15,
        'wordwrap' => FALSE,
        'wrapchars' => 76,
        'mailtype' => 'html',
        'charset' => 'utf-8',
        'validate' => TRUE,
        'priority' => 3,
        'crlf' => "\r\n",
        'newline' => "\r\n",
        'bcc_batch_mode' => FALSE,
        'bcc_batch_size' => 200
        );

        // use SMTP instead of the internal mailer?
        if ( ! empty($config['smtp_host']) )
        {
            $config['protocol'] = 'smtp';
            $config['smtp_user'] = $this->config->item('smtp_username', 'exitecms');
            $config['smtp_pass'] = $this->config->item('smtp_password', 'exitecms');
        }

    log_message('debug', 'ExiteCMS configuration loaded');

    // load the email library
    $this->load->library('email');

    // and initialize it
    $this->email->useragent = $config['useragent'];
    $this->email->initialize($config);

}

My configuration table:
Code:
CREATE TABLE IF NOT EXISTS `cms_configuration` (
  `config_id` int(9) unsigned NOT NULL AUTO_INCREMENT,
  `config_module` varchar(50) NOT NULL DEFAULT '',
  `config_name` varchar(50) NOT NULL DEFAULT '',
  `config_value` tinytext NOT NULL,
  `config_timestamp` int(10) NOT NULL DEFAULT '0',
  PRIMARY KEY (`config_id`),
  KEY `config_module_config_name` (`config_module`,`config_name`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 ;

#4
[eluser]SitesByJoe[/eluser]
@WanWizard - I've been looking to make a solution just like this for some time. Is this being called from a custom library or when are you calling this function?

#5
[eluser]WanWizard[/eluser]
I have a bit of an odd situation, and I don't use routes. All requests are routed to a single controller, that does the routing based on database information. I have this code in a library, which is called in the index method of this controller.

In a "normal" CI environment, you could call this from the constructor of a MY_Controller controller.


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