type error in view.schema.get_operation()

[sennierer]

Describe the bug
When deploying our locally working instance to production we get the following error:

File "/drf-spectacular/drf_spectacular/generators.py", line 153, in parse
    operation = view.schema.get_operation(path, path_regex, method, self.registry)
TypeError: get_operation() takes 3 positional arguments but 5 were given

As this happens only on the server it is hard to trace, but I guess the error is due to our reverse proxy setup that passes X-Headers-* on and proxies requests from http to https.

[tfranzel]

i have a different theory because that error feels way too familiar. @sennierer do you have a different config in production? i would guess your production config is missing

REST_FRAMEWORK = {
    # YOUR SETTINGS
    'DEFAULT_SCHEMA_CLASS': 'drf_spectacular.openapi.AutoSchema',
}

[sennierer]

found out just a minute after posting, on the servers we still had an old settings running ;)
sorry for that, cloding the issue!

[tfranzel]

no problem. it happened to me a couple of times. since the root cause is not that obvious i'll add an error message that points new users in the right direction.

[stefanpl]

I got the same error when calling

manage.py generateschema --file …

instead of

manage.py spectacular --file …

🙈

[tfranzel]

@stefanpl, yes that is the second way to get this error.

generateschema will start the DRF's default schema generator, which has nothing to do with us.