Do you want to know how to add a node alias in a twig file?  Rather than do the set up in a custom module or using your theme file. To be able to create a node alias in a twig file you need to know the node.nid value.  Obviously without it you have nothing to reference from.  In this example, the node.nid value is extracted during a loop.  A fairly standard loop such as {% for row in rows %} // ... script doing some magic ... // {% endfor %}Begin by setting the nid value...

Working in Twig, I had to add classes to a pre-existing array.  Whilst I've grown used to the patterns in PHP, these cannot be applied in Twig.  Instead I had to merge the new array elements. Non associative arrays Working from a base level, I'll begin as if the original array hasn't been set.  The merge filter expects as first argument an array whose content will be merged with the assigned variable: {% set myArray = [] %} {% set myArray = myArray|merge(['tw-flex-inline'])...