Order Printer - SKU displaying, but sort is not working

Shopify Discussion

Topic summary

A user is attempting to create a packing slip template that displays and sorts line items by SKU, but the sorting functionality isn’t working despite the SKU values displaying correctly.

The Problem:

  • SKU column displays properly in the invoice/packing slip
  • Sort by SKU parameter (sort: "sku") fails to reorder items
  • Code uses {% assign lineitems = unfulfilled_line_items | sort: "sku" %} but iterates over line_items instead

Proposed Solution:

  • The variable name mismatch is identified as the likely cause
  • The assign statement creates lineitems (or unfulfilled_line_items) but the for-loop references line_items
  • Fix: Either remove underscores to match variable names, or ensure the for-loop iterates over the correctly assigned variable
  • Alternative approach: Use {% assign sorted_line_items = line_items | sort: 'sku' %} then loop through sorted_line_items

Status: A solution was provided several months after the original post, suggesting the variable naming inconsistency needs correction for the sort filter to function properly.

Summarized with AI on November 11. AI used: claude-sonnet-4-5-20250929.
1

I am editing an invoice to make a packing slip with order details. It is all working except, I cannot get it to sort by SKU. Any ideas what I am doing wrong?

{% assign lineitems = unfulfilled_line_items | sort: "sku" %} {% for line_item in line_items %} {% endfor %}
Quantity SKU Item
{{ line_item.quantity }} {{ line_item.sku }} {{ line_item.title }}
2 Likes
2

This may be a few months late:

If you want to adjust your code, remove the _ from the {% for line_item in line_items %} so it matches the assign tag you gave it {% assign lineitems = unfulfilled_line_items | sort: “sku” %}

Below is my code:

{% assign sorted_line_items = line_items | sort: ‘sku’ %}

{% for line_item in sorted_line_items %}

Very similar to yours, but basically I dropped the unfulfilled part.. hope it helps!