Formatter for: "content-type: application/json"

[nowackipawel]

I am trying to use CI4 for an API and I am sure that thing was working in some of previous versions.

My request header is:
content-type:
application/json

I am getting error:

<br /> <b>Fatal error</b>: Uncaught InvalidArgumentException: No Formatter defined for mime type: in /home/.../site/application/Config/Format.php:56 Stack trace: #0 /home/.../site/system/API/ResponseTrait.php(358): Config\Format-&gt;getFormatter('') #1 /home/.../site/system/API/ResponseTrait.php(120): CodeIgniter\Debug\Exceptions-&gt;format(Array) #2 /home/.../site/system/Debug/Exceptions.php(149): CodeIgniter\Debug\Exceptions-&gt;respond(Array, 500) #3 [internal function]: CodeIgniter\Debug\Exceptions-&gt;exceptionHandler(Object(Error)) #4 {main} thrown in <b>/home/.../site/application/Config/Format.php</b> on line <b>56</b><br /> <br /> <b>Fatal error</b>: Uncaught InvalidArgumentException: No Formatter defined for mime type: in /home/.../site/application/Config/Format.php:56 Stack trace: #0 /home/.../site/system/API/ResponseTrait.php(358): Config\Format-&gt;getFormatter('') #1 /home/.../site/system/API/ResponseTrait.php(120): CodeIgniter\Debug\Exceptions-&gt;format(Array) #2 /home/.../site/system/Debug/Exceptions.php(149): CodeIgniter\Debug\Exceptions-&gt;respond(Array, 500) #3 /home/.../site/system/Debug/Exceptions.php(201): CodeIgniter\Debug\Exceptions-&gt;exceptionHandler(Object(ErrorException)) #4 [internal function]: CodeIgniter\Debug\Exceptions-&gt;shutdownHandler() #5 {main} thrown in <b>/home/.../site/application/Config/Format.php</b> on line <b>56</b><br />

When I add an print $mime in this function it prints : undefined

[natanfelles]

Hi @nowackipawel

I think that you have an error and the Exception is not getting the Accept Header.

You could try send it or, please, debug for this lines: https://github.com/bcit-ci/CodeIgniter4/blob/41f90ecae7fc3f8d9740c47a78a441f57d61dbd3/system/Debug/Exceptions.php#L147-L152

[nowackipawel]

I add

'content-type:
application/json
accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8'

and post that json again, it was my fault with routes. Thx for hint, sorry for that, everything is working gr8.

[natanfelles]

Oh, that's good you can solve.

Even so, it looks like we should do something to respond a generic format without the Accept Header. Checking the Content-Type also, maybe.

[nowackipawel]

I think you could just look for other the most popular content types provided by 'accept' header and return stack trace as JSON or XML or just return simple preformated text. I think it will be the simplest improvement for that, I am not sure if it can be treated as issue.

May I help you with that case somehow?

[lonnieezell]

@nowackipawel Could you provide steps to reproduce this from a new install? I just tried a GET request to the home page with no headers at all and it worked as expected.

[nowackipawel]

I've checked it now and it seams to work good.
I was using random rest client and defined: content-type and accept as application/json.
When I created this issue there was an Fatal Error now CI returns json :).

{ "title": "CodeIgniter\Exceptions\PageNotFoundException", "type": "CodeIgniter\Exceptions\PageNotFoundException", "code": 404, "message": "Page Not Found", "file": "/home/zdamy/site/system/Exceptions/PageNotFoundException.php", "line": 13, "trace": [ { "file": "/home/zdamy/site/system/CodeIgniter.php", "line": 818, "function": "forPageNotFound", "class": "CodeIgniter\Exceptions\PageNotFoundException", "type": "::", "args": [], }, { "file": "/home/zdamy/site/system/CodeIgniter.php", "line": 222, "function": "display404errors", "class": "CodeIgniter\CodeIgniter", "type": "->", "args": [ {} ], }, { "file": "/home/zdamy/site/public/index.php", "line": 37, "function": "run", "class": "CodeIgniter\CodeIgniter", "type": "->", "args": [], } ], }
gr8 job.

accept: application/xml works good as well :).
thank you.

[lonnieezell]

Glad to hear it's working now! Closing.