JSONAPI adapter content-type is being blanked over by application/vnd.api+json on POST

[Benjy1979]

Reproduction

Please provide one of the following:

• a PR linking to this issue with a failing test showing the issue
  A what?
• a Twiddle with a simplified reproduction and instructions for how to
  observe the unexpected result.
  Not familiar with it. It doesn't let me add an adapter and does not have the right version in the dropdown.
• a github repository with a simplified reproduction and instructions for how to observe the unexpected result
  Here is a repository

Check POST in the model adapters of CreateRecord call.

Description

See this for description

Versions

Run the following command and paste the output below: npm ls ember-source && npm ls ember-cli && npm ls ember-data.

[email protected] C:\inetpub\wwwroot\ember-roomviewer-bighomeshop
`-- [email protected]

[email protected] C:\inetpub\wwwroot\ember-roomviewer-bighomeshop
`-- [email protected]

[email protected] C:\inetpub\wwwroot\ember-roomviewer-bighomeshop
`-- [email protected]

P.S. If any of the packages show more than one installed version, that may be the root cause of the issue!

---

Thanks again!

The ember-data Team <3

[Benjy1979]

I've put a project showing simple program to reproduce the issue:
Here is a repository

The application route has CreateRecord in it. It will use the plan adapter (as proven by the alert("Called this"); appearing in the application route).

It makes this request in chrome. I can see the x-access-token there look, but the content-type is not set.

Accept: application/vnd.api+json
Content-Type: application/vnd.api+json
Origin: http://localhost:4200
Referer: http://localhost:4200/
User-Agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Mobile Safari/537.36
x-access-token: TOKENHERE
X-Requested-With: XMLHttpRequest

[runspired]

@Benjy1979 if you properly case to Content-Type is it set?

[Benjy1979]

No it stays the same

[runspired]

I think this will resolve it: #6169

[Benjy1979]

How do I get hold of the changes, I'm not too familiar with what I can do with that link. 1 of the tests are failing.

I normally just use ember-cli-update

[runspired]

@snewcomer was this fixed by #6341 ?

[snewcomer]

Yes it was! At least for the fetch case - https://github.com/emberjs/data/pull/6341/files#diff-ad84fbc878beedc97078e5053b8e41d7R1102

For ajax, it is relying on contentType and shouldn't be blanking over it anymore!

[Benjy1979]

Ah yes it is working now, my extended adapter for a particular model is reading the header callback and the request has the specified one in the request. Thrilled, and thanks very much.