Twig math with variables

Question

I want to do some math in twig. I've got 2 variables, price and quantity and i want to multiply them. But when I do it like this:

{{ {{ carts.price }} * {{ carts.quantity }} }}

It returns an error

A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "punctuation" of value "{".

How can i do this

Answer 1

It's because you duplicate {}, try something like this : {{ carts.price * carts.quantity }}

some docs https://twig.symfony.com/doc/2.x/templates.html#math