How do we change the weight value in the cart?

I have the same problem. Did you find a solution ?

This sounds like a support request, the quantity * weight should already work.

Are you saying this doesn't work, then maybe steps to reproduce would be helpful?

If I add to the cart :
1 product of 0.15 kg and 1 product of 0.20 kg, the sum is well of 0.35 kg.
If I add to the cart :
1 product of 0.15 kg and 5 products of 0.20 kg, the sum is not corect is always displays 0.35 kg.

The quantity column does not work with this module.

See screenshots.

Thanks @zenimagine, screenshots are always helpful. How are you getting the value being grabbed to show on the cart in your screenshots at the top.

"Le poids de votre panier est de 0.35 kg", where does that come from?

I used a mathematical formula in the view.

My question is, how to display on the cart total weight of the order ?

For the calculation of the shipping costs it works but to display the total weight to my customers it does not work.

You need to multiply the (line item quantity * weight) in your formula.

That's what I did.

Product1: 1kg; 3€; x2; Total 2kg
Product2: 1.5kg; 12€; x3; Total 4,5kg

With the formula I have the total weight of each product. My question is how to get the tatal weight of the order ? In my example ca should be 6.5kg

Double check the code you wrote, there may be something missing. Feel free to post the custom logic here

My question is, how to display the total weight of a command in a block ?
I want my customers to see the weight of their order on the cart and shipping page.
With a view it is not possible.
http://drupal.stackexchange.com/questions/225621/can-not-aggregate-a-glo...

I got an answer here :

https://www.drupal.org/node/2844407#comment-11878345

How to create a token with the total weight of the current user's command ?