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Passing vars into individual collection items

Hi Guys,

I have a list page that shows all items for a collection. Individually I am able to pass in a perch var, like so:

if (perch_get('product_slug')) {
    $result = perch_collection('Products', array(
        'template'          => 'shop/product',
        'filter'            => 'product_slug',
        'match'             => 'eq',
        'value'             => perch_get('product_slug'),
        'count'             => 1,
        'skip-template'     => true,
        'return-html'       => true,
    ));
PerchSystem::set_var('total_price', ($result[0]['product_price']+$result[0]['product_postage'])*100);
}

However, on the main page where all the items are listed. How can I pass/set this var individually for each collection item?

    perch_collection('Products', [
        'template'          => 'shop/_teaser',
    ]);

Thanks, Terry
Terry Upton

Terry Upton 0 points

  • 5 years ago
Drew McLellan

Drew McLellan 2638 points
Perch Support

5 years ago

Use an each callback. See the section "Specifying an item callback function"

https://docs.grabaperch.com/docs/content/perch-content-custom/
Terry Upton

Terry Upton 0 points

5 years ago

I have tried this;

perch_collection('Products', [
                'template'          => 'shop/_teaser',
                'each' => function($item) {
                    PerchSystem::set_var('total_price', ($item['product_price']+$item['product_postage'])*100);
                    return $item;
                },

But it sets the same amount for each product. Rater than each one individually. My code might be wrong, any pointers?

Thanks Drew.

Terry
Drew McLellan

Drew McLellan 2638 points
Perch Support

5 years ago

You need to modify $item and then return it, so instead of this:

PerchSystem::set_var('total_price', ($item['product_price']+$item['product_postage'])*100);

do this:

$item['total_price'] = ($item['product_price']+$item['product_postage'])*100;
Terry Upton

Terry Upton 0 points

5 years ago

Thanks Drew :-)