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I use a computed field, to calculate and store a floating value for a node. Now I want to work with this value in a twig template. When I access the field value via {{ content.computed_field.0 }}it outputs the correct value, say 0.22. When I try to calculate with this value, i.e. {% set newvalue = content.computed_field.0 * 100 %} the page breaks (just pre-calculation twig content is outputted).

My first guess was that, for some reason, the field value is stored or read as a string (or another type?!). My DB says its a float and I don't know how to check a variable type in twig.

I tried to to use twigs number_format()-function : {{ content.computed_field.0|number_format(2) }}. This transforms the computed field to 1. I have no clue why this happens.
What am I doing wrong? Any tips or a workaround?

I use Drupal 8, Twig 1.25, and Computed Field 8.x-2.0-alpha3

Thank you in advance

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    Why can't you make a math in field preprocess function?
    – David
    Commented Mar 25, 2020 at 15:04

1 Answer 1

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You could try this, if your using a node template: {{ node.computed_field.value * 100 }}

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