Using custom line item properties

When a subscription product is added to the cart, line item properties that define the subscription product and subscription interval are sent with the product data. You can specify custom line item properties using custom code.

This guide provides an overview of line item properties and solutions for specifying custom line item properties.

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Platform:

Recharge Checkout on Shopify

Before you start

This solution requires advanced HTML, Shopify Liquid, and JavaScript knowledge. This type of customization is not supported by Recharge Support as per our design and integration policy. If you require further assistance, please visit the Recharge Agency Partner Directory.

Line item property variables

Variable	Allowed value
`shipping_interval_frequency` (required)	Numeric value (eg. 1, 2, 3, etc.)
`shipping_interval_unit_type` (required)	Day Week Month
`charge_interval_frequency`	Numeric value (eg. 1, 2, 3, etc.)
`charge_interval_unit_type`	Day Week Month
`first_recurring_charge_delay` Note: The `first_recurring_charge_delay` property affects the time period between the first charge and the subsequent second charge. It does not impact the timing of the first charge. The first charge always occurs at the time of checkout.	Numeric value (eg. 1, 2, 3, etc.)
`number_charges_until_expiration`	Numeric value (eg. 1, 2, 3, etc.)
`charge_on_day_of_month`	Numeric value (eg. 1, 2, 3, etc.)
`charge_on_day_of_week`	0 - Monday 1 - Tuesday 2 - Wednesday 3 - Thursday 4 - Friday 5 - Saturday 6 - Sunday

Pass the properties as a form submit

The following code block is an incomplete form for adding an item to the cart to demonstrate how the properties must be passed.

<form action="/cart/add" method="post">
<input name="properties[shipping_interval_frequency]" type="hidden" value="1" />
<input name="properties[shipping_interval_unit_type]" type="hidden" value="Month" />
</form>

Pass properties via AJAX

For more information on using AJAX to add a product to the cart, visit Adding an item to the cart with AJAX. This guide is a starting point for adding additional parameters to the cart.

Updated 11 days ago