Add new method `req.get_param_as_media()`

[vytas7]

Add new method req.get_param_as_media() (or req.get_param_as_content() more in line with OpenAPI spec, but I think get_param_as_media() is more consistent with the rest of the framework).

This new method would be similar to req.get_param_as_json(), however it would also accept a content_type (str) argument instead of just defaulting to JSON.

req.get_param_as_json() could then become a thin wrapper around the new method.

TBD whether the content_type argument would be required, or could be None, and default to the application's default content type.

[NicoTinhas]

Hey, I'm new to git and would like to help solve this issue.

Can I be assigned?

[vytas7]

Hi @NicoTinhas, sure!
We don't assign per se, your comment here is enough to let us and others know you're working on this.

How new are you to Python etc? I you want a gentle start we also have #2547 which is even easier 🙂

[NicoTinhas]

I don't mind,

I'll give this issue a shot and if it seems too confusing I'll comment on the other one. 🙏🏼

[NicoTinhas]

Hey, finished the task.. hope it is good - it was quite hard for my level but still tried continuing while learning.
Thanks in advance!

[vytas7]

We are looking for new contributors for this issue!

[CaselIT]

TBD whether the content_type argument would be required, or could be None, and default to the application's default content type.

in #2548 the implementation made it optional falling back to the default content type, so I think we should do the same for this one