You have been working hard on getting comments being added (POST) through REST in Drupal 8. However, now you are seeing the following Assigning the wrong user against a new comment - and most likely the new comment is being assigned to the site admin.
The error here is related to the _embedded uuid.
What to do
You need to check that you have the correct uuid for both the entity_id and the uid
- entity_id - "http://example.local/rest/relation/comment/comment/entity_id";
- uid - "http://example.local/rest/relation/comment/comment/uid"
Where...
{
...
"_embedded": {
"http://example.local/rest/relation/comment/comment/entity_id": [{
"uuid": [{"value": "8795cd5d-d223-4cad-9373-605c8ffac10f"}]
}],
"http://example.local/rest/relation/comment/comment/uid": [{
"uuid": [{"value": "a8c95c05-4546-4c7b-def5-fed7a4c5beca"}]
}]
}
}
Want to see the request body in full - go to Drupal 8 REST POST comments
Testing this, I found that you can change the entity_id value (in this example 2) then the line becomes
"http://example.local/relation/comment/comment/entity_id":{"href":"http://example.local/node/2?_format=hal_json"}so the entity_id is set to the correct node.nid value that you want to comment posted too. If the uuid points to a different entity_id then the comment will be assigned to entity of the uuid in the _embedded area.
This also applies to the "http://example.local/rest/relation/comment/comment/uid"