Updating object properties in twig

Question

Is there a way to update an object's property in twig?

An object like the following is passed to twig:

object    property1    property2 

I would like to update property1 like this:

{% set object.property1 = 'somenewvalue' %} 

The above code does not work, but is it possible to do something like this in twig? If not, is there a way to write an extension or macro to do this?

Answer 1

You can do it by merging objects:

{% set object = object|merge({'property1': 'somenewvalue'}) %}