Only Show Gift Messages on Shopify’s Packing Slip Template If They Are Present

Adding a check to your Shopify Packing Slip template to only show gift message if they are added can be accomplished with the following code:

{% for line_item in line_items_in_shipment %}
  {% for p in line_item.properties %}

    {% if 
        p.first == "gift" or 

        p.first == "To" or 

        p.first == "From" or

        p.first == "Message"​
        %}

    <p>{{ p.first }}: {{ p.last }}</p>

    {% endif %}

  {% endfor %}

{% endfor %}

Please note: This tutorial is for gift messages that are added on the product page, and passed through to the order as line items.