Use-cases wanted! Adding dietary requirements to Schema.org/Person

I want Schema.org to add dietary requirements to the Person specification. And I need your help!

Background

Schema.org is a metadata standard. You can include it on webpages to create structured, machine-readable data.

Here's a sample way of representing a Person:

{
  "@context": "https://schema.org/",
  "@type": "Person",
  "name": "Albert Einstein",
  "hasOccupation": [
    {
      "@type": "Occupation",
      "name": "Professor of Physics",
      "occupationLocation": {
        "@type": "Country",
        "name": "USA",
        "sameAs": "https://www.wikidata.org/wiki/Q30"
      }
    }
  ]
}

Hopefully easy to follow. This is a Person, they have a name and an occupation. That occupation has a name and is located in a country. That country has some linked data.

There are all sorts of properties we can associate with a Person - birth and death dates, memberships, nationality, credentials, tax ID, and even weight! See Schema.org/Person for a full list.

One which I think would be useful is a person's diet.

Diet

Schema already has the concept of a RestrictedDiet type. It lists things like Vegetarian, Halal, Kosher, Low Salt etc.

But it only applies to MenuItem and Recipe types. That is, I can mark up a restaurant's menu and say that this dish is Gluten Free, and that dish is Vegan friendly.

{
    "@context": "http://schema.org",
    "@type":"MenuItem",
    "name":"Potato Skins",
    "description":"Small serving of baked potato skins.",
    "offers":{
        "@type":"Offer",
        "price":"4.49",
        "priceCurrency":"GBP"
    },
    "suitableForDiet":[
        {
            "@type": "GlutenFreeDiet"
        },
        {
            "@type": "VeganDiet"
        }
    ]
}

My Use Cases

I maintain a personal contact site. I tell people my name, address, occupation, etc. I also want to inform other people that I am vegetarian.

• On a social network, it might be nice to have an (optional) feature where people give their dietary preferences.
• My Jewish and Muslim friends might want to automatically filter out the pork casserole recipes people post.
• My address book might suggest a restaurant which caters for my guests' preferences.
• An encyclopædia can show dietary restrictions of famous people.
• An airline could - with permission - read your social profile to select your meal for a flight.

Sample

Here's how I think it could work:

{
    "@context": "https://schema.org/",
    "@type": "Person",
    "name": "Terence Eden",
    "restrictedDiet": "http://schema.org/VegetarianDiet"
}

That is, just add restrictedDiet as a valid property of Person. I suppose it could be hasDiet or dietaryPreference or similar.

Your Use Cases

If you want to add your own use cases, or just think this is a good idea, please leave a comment on GitHub.com/schemaorg/schemaorg/issues/1996