Question

I am using Kohana MVC framework. I want to add a module that will work with PHPCassa object (Cassandra NoSQL).

Problem is that when I create the object I have all it’s properties and I can interact with it in construct, but when I create it from different place it’s returning as empty object.

I’m sure that I am missing something since I’m relatevely new to OOP. Please help me out here.

Module file

<?php

// Loading cassandra libraries, tried to load them here, did not help
//require 'application/modules/cassandra/lib/connection.php';
//require 'application/modules/cassandra/lib/columnfamily.php';

class Cassandra {

    function __construct($columnFamily) {
        // Loading cassandra libraries
        require 'application/modules/cassandra/lib/connection.php';
        require 'application/modules/cassandra/lib/columnfamily.php';

        $pool = new ConnectionPool('localhost');
        $cf = new ColumnFamily($pool, $columnFamily);

        // print_r($cf); // This will print object with all the proporties that I can use

        return $cf;
    }

Class that will load the module and will create empty object

<?php

class Controller_Main extends Controller {

    public function action_index() {
        $a = new Cassandra('timeline');
        echo '<pre>';
        print_r($a); // This will print out empty Cassandra object
        die();

        //$this->response->body('hello, world!');
    }

}

Answer 1

Doing it wrong way , you are creating two object in constructor , one the Cassandra object and the other is ColumnFamily and obviously the new Cassandra('timeline'); will return the Cassandra object.

Try this way :

class Cassandra {

    static function LoadCassandra($columnFamily) {
        // Loading cassandra libraries
        require 'application/modules/cassandra/lib/connection.php';
        require 'application/modules/cassandra/lib/columnfamily.php';

        $pool = new ConnectionPool('localhost');
        $cf = new ColumnFamily($pool, $columnFamily);

        return $cf;
    }

And use it :

class Controller_Main extends Controller {

    public function action_index() {
        $a =  Cassandra::LoadCassandra('timeline');
        echo '<pre>';
        print_r($a); // This will print out empty Cassandra object
        die();

        //$this->response->body('hello, world!');
    }

}