What else required to calculate Nutri-Score

[sineptic]

Problem

app say that some information needed, but not say what I need to add.

Proposed solution

• add list of what else you need to add
• underline(or highlight) nutrition values that are required(when adding them)

Additional context

[teolemon]

• In the Nutri-Score knowledge panel, indicate the missing nutriments that prevent computing the Nutri-Score openfoodfacts-server#7609 should solve your issue @sineptic

[monsieurtanuki]

@teolemon Low hanging fruit suggestion: I guess that nutriscore-related nutrients don't change very often, so we could hard-code them and highlight them in the nutrition fact page, possibly with a "needed for nutriscore" subtitle.

[monsieurtanuki]

Several remarks...

Nutrition fields needed for the nutriscore computation

(as interpreted in compute_nutriscore_score_2023 @ Nutriscore.pm)

• energy
• sugars
• saturated_fat
• fat
• salt
• fiber
• proteins
• (computed from ingredients: fruits_vegetables_legumes)

=> a solution to fix the issue would be to systematically consider those fields as part of the nutrition facts edit screen.

More relevant choice of nutrients to display

For historical (good) reasons, starting from the European version of nutrient hierarchy, we decided to display a specific set of nutrients: all those with "important": true. But we could as well use "display_in_edit_form": true, which is slightly the same.
But it's not the same for Russia or Canada:

count	Europe	Russia	Canada
display_in_edit_form	11	11	16
important	10	5	4

=> a solution to fix the issue would be to consider "display_in_edit_form": true instead of "important": true:

• we would be consistent with the website regarding the initial nutrients suggested as editable
• those additional nutrients include all the nutrients needed for the nutriscore

Unfortunate discrepancies with the website

For some reason

• for some products, on the website the "alcool" is there but not editable. A matter of food category? In Smoothie we have no way to know in which case we should "disable" this or this nutrient.
• in Canada, some nutrient values are in "% DV" by default on the website (and IRL), but unfortunately
  • we don't support "% DV" in off-dart or Smoothie
  • we don't know which nutrients are "% DV"able (same with unit IU)