Symfony2 Twig Get Total Count for Child Entity

Question

The following entities exist, Farm, Barn and Animals. A Farm can have many Barns and a Barn many Animals.

When displaying a Farm in a TWIG template the number of Animals

Answer 1

You are looking for the length filter

When used with an array, length will give you the number of items. So, if your array is farm.barns, you can just use {{ farm.barns|length }}