I have created a custom grid and collection. Now, I am saving the filters to session for future use using:


and retrieving this in another controller. How am I going to apply these parameters upon loading the collection?

I can retrieve the parameters/filters using:

$filters = Mage::getSingleton('adminhtml/session')->getData('custom_block_gridfilter');
$filters = Mage::helper('adminhtml')->prepareFilterString($filters);

Now, how am I going to apply it to?


Or perhaps how am I going to retrieve the grid collection with the filters applied to it?

1 Answer 1


Theoretically \Mage_Adminhtml_Block_Widget_Grid::_prepareCollection should take care of this.

So if you have overwritten this method, maybe the problem is only, that you don't call parent::_prepareCollection

  • So this isn't possible to be retrieved using some custom model that doesn't inherit Mage_Adminhtml_Block_Widget_Grid? Commented Nov 18, 2015 at 23:04
  • Why would one do that?! :D And to answer the question: Sure it is doable. At least by copying all the code... Commented Nov 18, 2015 at 23:07
  • 1
    Assuming you have millions of items in a collection, then in a custom grid which has been filtered already into a smaller set, then you have another page let's say mass edit for the items that have been filtered/selected, then you might wanna retrieve those items to some other custom controller/model. Commented Nov 19, 2015 at 2:19

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