Returning a JSON result from MongoDB (CodeIgniter)

gistfile1.aw

// connect
$m = new Mongo();

// select a database
$db = $m->shugah;

// select a collection (analogous to a relational database's table)
$collection = $db->entry_types;

// find everything in the collection
$cursor = $collection->find();

$return = array();
$i=0;
while( $cursor->hasNext() ) {
      $return[$i] = $cursor->getNext();
      // key() function returns the records '_id'
      $return[$i++]['_id'] = $cursor->key();
}

$this->output
     ->set_content_type('application/json')
     ->set_output(json_encode($return));