Show the weight of all products in the cart with the same product's SKU or TAG

Shopify Discussion
1

Hello there Shopify society,

I need an advice regarding the cart’s product’s weight.
I need to show the message to customers if the go over the limit for certain products.
I managed to show the message if each product’s weight with SKU E1 go over 1000g, but I need to show the message if the weight of all products in the cart with SKU ‘E1’ have more than 1000g.
How can I show that, I tried with {{cart.total_weight}} , but it show the weight of all products, not only total product of items with SKU ‘E1’? I would really appreciate if you could help me. I tried some apps, but they don’t work.

Thanks

{% if item.variant.sku contains ‘E1’%}

{%if item_weight_cart < 1000 %}

This item is considered to be a Dangerous good.

{%endif%} {%if item_weight_cart > 1000 %}

You have some Dangerous good items in your cart .
You have reached the limit for Dangerous good items. Please, lower the quantity.

{%if cart.total_weight > 1000 %}

The total weight of all items with E1 regulation is over the limit, please lower the quantity.

{%endif%}

{%endif%}

2

I am sure this is a bit late… But I was looking for something similar and came up with this solution:

Depending on your version of shopify theme… But on the cart page, before if displays each item: we wanted to trigger a custom quote for for items that would weigh more than UPS would allow (150 pounds)

{% for item in cart.items %}
{% capture itemUnitWeight %}{{item.grams | divided_by: 453.592}}{% endcapture %}
{% capture itemTotalWeight %}{{ itemUnitWeight | times: item.quantity }}{% endcapture %}
{% if itemTotalWeight > 149 %}
{% assign requires_quote = true %}
{% endif %}

…