Get product collection from a category id

I am trying to get a collection of products from a category id. A few things I have tried are in the block :

 $category = Mage::getModel('catalog/category')->load(123)


    $category = Mage::getModel('catalog/category')->load(123);
    $products = $category->getProductCollection()->addCategoryFilter($category)
                         ->addAttributeToFilter('type_id', 'simple')

also tried just doing it from the phtml

$oCatId = Mage::getModel('catalog/category')->load(769); 

None of this works but I am not seeing any errors either. I saw another post that seems like the same question : Magento - Get Products from Specific Category but that method did not work for me either. Thanks for any help!


How to load a product collection with all data that you usually need for product lists in the frontend:

$_categoryId = 123;
$category = Mage::getModel('catalog/category')->load($_categoryId );
$productCollection = $category->getProductCollection();

This prepares the product collection to load the necessary data to display prices, the product link and any attributes configured as "used in product listing", but not more.

Try this:

$products = Mage::getModel('catalog/category')->load($category_id)
 ->addAttributeToSelect('*') // add all attributes - optional
 ->addAttributeToFilter('status', 1) // enabled
 ->addAttributeToFilter('visibility', 4) //visibility in catalog,search
 ->setOrder('price', 'ASC'); //sets the order by price


This should work because it adds the category filter for you by virtue of already having the category loaded:


public function getProductCollection()
    $collection = Mage::getResourceModel('catalog/product_collection')
    return $collection;

Wait, it still doesn't work!

Ok, so you may have larger issues, presumably something overwriting getProductCollection. So let's try circumventing that convenience method:

$category = Mage::getModel('catalog/category')->load($category_id);
$products = Mage::getResourceModel('catalog/product_collection')

This below code will give you product collection from category id 10.

$categoryId = 10;    
$products = Mage::getSingleton('catalog/category')->load($categoryId)

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