Codeigniter - Using Multiple Databases

Question

database.php:

$db['default']['hostname'] = "192.168.2.104"; $db['default']['username'] = "webuser"; $db['default']['password'] = "----"; $db['default']['database'] = "vad"; $db['default']['dbdriver'] = "mysql"; $db['default']['dbprefix'] = ""; $db['default']['pconnect'] = TRUE; $db['default']['db_debug'] = TRUE; $db['default']['cache_on'] = FALSE; $db['default']['cachedir'] = ""; $db['default']['char_set'] = "utf8"; $db['default']['dbcollat'] = "utf8_general_ci";  $db['stats']['hostname'] = "192.168.2.104"; $db['stats']['username'] = "webuser"; $db['stats']['password'] = "---"; $db['stats']['database'] = "vad_stats"; $db['stats']['dbdriver'] = "mysql"; $db['stats']['dbprefix'] = ""; $db['stats']['pconnect'] = TRUE; $db['stats']['db_debug'] = TRUE; $db['stats']['cache_on'] = FALSE; $db['stats']['cachedir'] = ""; $db['stats']['char_set'] = "utf8"; $db['stats']['dbcollat'] = "utf8_general_ci"; 

The issue is I can only define in the configuration one $active_group, default, or stats. I followed the CodeIgniter documentation and I added the following:

$DB2 = $this->load->database('stats', TRUE); 

This way I connect to the second database, but I lose the connection to the first one. Does anyone have any ideas on how can I load the two database without having to do the following in all models constructors?

$database1 = $this->load->database('database1', TRUE); $database2 = $this->load->database('database2', TRUE);  

Regards,

Pedro

Answer 1

There is a bug in codeigniter. Inserting one line into a class will fix the whole thing. Here is the original source: http://koorb.wordpress.com/2007/11/16/codeigniter-connect-to-multiple-databases/

** This fix does not apply to PostgreSQL

Here is a copy just in case that site goes down.

The line number has changed. Here is the bug fix from codeigniter:

start bugfix

Description

all of the database calls go to the same database (last one initialized)

To fix the problem change the simple_query function in /system/database/DB_driver.php:

function simple_query($sql) {     if ( ! $this->conn_id)     {         $this->initialize();     }         $this->db_select(); //<-----------------  Added this line     return $this->_execute($sql); } 

This completely fixes the problem, so you can do stuff like this in a model

$this->legacy_db = $this->load->database('legacy', true); 

Answer 2

Instead of applying the hack as mentioned by Camacho you can also set the 'pconnect'-flag in the database.php file to FALSE for all connections.