New get param method support for Request class: get_param_as_enum

[DeloitteYuvarajan]

falcon/falcon/request.py

Line 49 in 492087f

class Request:

Suggested:

def get_param_as_enum(self, name, enum_class, required=False, store=None, default=None):
    if value := self.get_param(name, required=required):
        try:
            value = enum_class[value]
            return value
        except KeyError:
            try:
                value = enum_class(value)
                return value
            except ValueError:
                raise HTTPInvalidParam(
                    title='Invalid', description=f'Invalid param {value}')
    if not required:
        return default

PS: I might miss store functionality, we can add it later.

[CaselIT]

Hi,

That would be fine by me, but I wonder if we could create an helper method that handles the common logic?

Cc @vytas7

[vytas7]

Hm dunno, let's maybe discuss pros and cons first?

This can be easily implemented by the user if needed, and it is probably better to use a validation library for advanced use cases rather than trying to implement every possible validator via get_param_as_*().