Calculate Field Values in Panel

Kirby 3
1

Hello.

Can you please tell me if it is possible to have following scenario:

There are 4 fields in the blueprint, A, B, C and D, each populated with the number.

The fifth field Sum should take the values from above fields and do some calculations with it, for example: A + B + C / D and of course show the result in the same blueprint.

Thank you very much.

2

On the fly this won’t be possible out of the box, because the fields don’t know anything of each other. You could populate such a sum field on save.

3

Yeah, that is the idea.
Any pointers?

4

a page model and an info field or section?

/site/models/alphabet.php

AlphabetPage extends Kirby\Cms\Page {
  public function sum() {
    $a = $this->a()->toFloat();
    $b = $this->b()->toFloat();
    $c = $this->c()->toFloat();
    $d = $this->d()->toFloat();

    return $a + $b + $c / $d;
  }
}

/site/blueprints/pages/alphabet.yml

title: Alphabet page
fields:
  a: 
    type: number
  b: 
    type: number
  c: 
    type: number
  d: 
    type: number
    validate:
      different: 0
  infofield:
    type: info
    text: "The result is: {{ page.sum }}"
5

@rasteiner Thank you. This works like a charm.