checking if a method exists or can be called in twig

Question

If inside a twig I have an object that I wanted to be tested if a method called getName can be called on that object, is there such case?

I tried doing the following without any success:

 {% if lastCategory.method(getName) is defined  %}

Answer 1

Yes, you can do it this way :

{{ attribute(object, method) is defined ? 'Method exists' : 'Method does not exist' }}

In your case, it will be something like

{{ attribute(lastCategory, 'getName') is defined ? 'Method exists' : 'Method does not exist' }}

See the documentation