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Refactoring + added undocumented properties (to be continued)
== Generalities ==
== Generalities ==
=== Languages ===
=== Taxonomy term ===
A taxonomy term is the main object of a taxonomy. Its simple form is the term itself with its language as a prefix. Example: <code>en:Authentic Trappist Product</code> is a term in the labels' taxonomy.
==== Languages ====
Each language has a 2-letter prefix. e.g. "en" for English and "fr" for French.
Each language has a 2-letter prefix. e.g. "en" for English and "fr" for French.
Whenever possible, the canonical language for each field value should be English. e.g. en:soups is the canonical value for the Soups category.
Whenever possible, the canonical language for each field value should be English. e.g. en:soups is the canonical value for the Soups category.
A value can be defined in another language (which becomes the canonical language), e.g. fr:soupes-a-l-oignon could be the canonical value for "Onion Soups" if we don't have an English translation yet.
A value can be defined in another language (which becomes the canonical language), e.g. <code>fr:soupes-a-l-oignon</code> could be the canonical value for "Onion Soups" if we don't have an English translation yet.
New values (e.g. categories that do not exist yet) should have an English canonical value.
New values (e.g. categories that do not exist yet) should have an English canonical value.
When a field value needs to be translated to a target language, if the translation does not exist yet, English is shown (or the canonical language if the English translation does not exist either).
When a field value needs to be translated to a target language, if the translation does not exist yet, English is shown (or the canonical language if the English translation does not exist either).
==== Remarks ====
===== Remarks =====
* Which standard is used for the codes? It can be the [https://en.wikipedia.org/wiki/ISO_639-1 ISO-639-1] standard, eventually this can be extended the 3-letter codes.
* Which standard is used for the codes? It can be the [https://en.wikipedia.org/wiki/ISO_639-1 ISO-639-1] standard, eventually this can be extended the 3-letter codes.
=== Singular or plural? ===
===== Singular or plural? =====
Generally, we use the plural for categories but some of them are in singular. We don't put the plural form when it has a different meaning. For example Beef and Beefs. We are talking of the meat and not the animal, so there is no "s". But "Rillettes" in french (and others languages) doesn't have a singular form.
Generally, we use the plural for categories but some of them are in singular. We don't put the plural form when it has a different meaning. For example Beef and Beefs. We are talking of the meat and not the animal, so there is no "s". But "Rillettes" in french (and others languages) doesn't have a singular form.
Simple synonyms (simple singular) are done automatically when possible.
Simple synonyms (simple singular) are done automatically when possible.
Synonyms are recursive: if en:yoghurt is a synonym of en:yogurt, then en:banana_yoghurt will automatically be added as a synonym of en:banana_yogurt
Synonyms are recursive: if <code>en:yoghurt</code> is a synonym of <code>en:yogurt</code>, then <code>en:banana_yoghurt</code> will automatically be added as a synonym of <code>en:banana_yogurt</code>.
=== Remarks ===
==== Remarks ====
* What are the simple synonym rules? How does translate to other languages?
* What are the simple synonym rules? How does translate to other languages?
* Not that recursion does not work for languages, where the adjectives changes based on gender.
* Not that recursion does not work for languages, where the adjectives change based on gender.
=== Stopwords ===
=== Stopwords ===
In the ingredients taxonomy, stopwords are also words that can be ignored. For instance ''contains'' is not an ingredient.
In the ingredients taxonomy, stopwords are also words that can be ignored. For instance ''contains'' is not an ingredient.
=== Description ===
The <code>description:</code> prefix allows to describe the term. Example:
en:Fair trade
description:en:Fair trade is an arrangement designed to help producers in developing countries achieve sustainable and equitable trade relationships. Members of the fair trade movement add the payment of higher prices to exporters, as well as improved social and environmental standards.
The description is reused on Open Food Facts website. Example: https://world.openfoodfacts.org/label/fair-trade
=== Image (logo) ===
The <code>image:</code> prefix allows to add an image/logo related to the term.
<en:Organic
en:Bio Austria
de:Bio Austria
country:en:Austria
image:en:bio-austria.67x90.svg
The description is reused on Open Food Facts website. Example: https://world.openfoodfacts.org/label/bio-austria
=== Wikidata ===
The <code>wikidata:</code> prefix allows to link the term with its equivalent on Wikidata database. Example:
fr:Label Rouge
xx:Label Rouge
wikidata:en:Q3214309
The description is reused on Open Food Facts website. Example: https://world.openfoodfacts.org/label/label-rouge
=== Opposite ===
"we use "opposite" for imports (e.g. when there is a column "Organic" with values like "No")
en:Non-fair trade, Not fair trade
fr:Non issu du commerce équitable
opposite:en: en:fair-trade"
=== Wikipedia ===
The <code>wikipedia:</code> prefix allows to link the term with its equivalent on Wikipedia. Example:
<en:Fair trade
en:Fairtrade USA
xx:Fairtrade USA
wikipedia:en:<nowiki>https://en.wikipedia.org/wiki/Fair_Trade_USA</nowiki>
The wikipedia: property is not reused on Open Food Facts website.
=== Unused properties ===
Some people have added more properties in the different taxonomies. They are not used for the moment, but they can lead to interesting usages:
* give more information for the contributor who is editing the taxonomy
* prepare new usages or features
Here is a list of properties already used in the taxonomies:
* wikipedia:
* country:
* label_categories:
* eu_groups:
* auth_name:
* auth_address:
* auth_url:
* exceptions:
=== Taxonomy architecture ===
=== Taxonomy architecture ===