How does the negative (not) conditional work in Twig?

Question

If I write:

{% if entry.section not 'Homepage' %}Blabla {% endif %}

this results in the error:

Unexpected token "operator" of value "not" ("end of statement block" expected)

But if I write:

{% if entry.section != 'Homepage' %}Blabla {% endif %}

It works.

In the twig docs there is no mentioning of != as an operator but it seems to be working just fine. Is != a craft specific operator?

So whats the difference between not and != ?

Answer 1

Twig != is a comparison operator.

The following comparison operators are supported in any expression: ==, !=, <, >, >=, and <=

You can use != to compare any two things that php lets you compare, and what you get back is a boolean.

Twig not is a logic operator. (so are and and or)

not: Negates a statement.

Answer 2

You could write {% if not entry.section == 'Homepage' %}

Use not to perform a negative test, not a string comparison.

Answer 3

This should be what you're looking for:

{% if entry.section not same as('Homepage') %}Blabla {% endif %}