WP_REST_Request->parse_json_params only supports 'application/json'

[pfefferle]

The parse_json_params function only supports application/json to parse the body as JSON, that means every subtype like application/ld+json or application/activity+json will be ignored. It is also possible to add additional data like application/json; profile="https://www.w3.org/ns/activitystreams" that will be also ignored by the current implementation.

I would recomment to use a more generic check like:

preg_match( '/application\/(\w+\+)?json.*/i', $content_type )

and/or a filter to overwrite the check.

[pfefferle]

JSON Content-(Sub)Type examples:

ActivityPub ​https://www.w3.org/TR/activitypub/

• application/ld+json
• application/activity+json
• application/ld+json; profile="​https://www.w3.org/ns/activitystreams"

JF2Feed ​https://www.w3.org/TR/jf2/

• application/jf2feed+json

JSON Web Signature (JWS) ​https://tools.ietf.org/html/rfc7515

• application/jose+json

WebFinger ​https://tools.ietf.org/html/rfc7033

• application/jrd+json

Here is the complete list: ​https://www.iana.org/assignments/media-types/media-types.xhtml#application