Converting an array to a collection in Magento

Question

I have an array object that is an output of a magento fetchall from DB and i want this to be converted to an object of a Collections class so that i can implement pagination

Answer 1

If you have an array of ids $product_ids, you can use:

$collection = Mage::getModel('catalog/product')->getCollection()
        ->addIdFilter($product_ids);

Answer 2

Also, populating a collection can be done with the addItem method.

Answer 3

Magento hasn't a built in conversor for that, but you can write you query using Collections, or load the Collection based on all ids from your array.

Answer 4

In order to convert an array to a collection object:
1> Create an instance of Varien_Db_Collection

$collection = new Varien_Data_Collection();

2> Create an instance of Varien_Object and set the array data

$rowObj = new Varien_Object();
$rowObj->setData($row);

3> Finally add the Varien_Object to Collection instance

$collection->addItem($rowObj);

4> Now $collection is a collection object.