Support Enum Types in Path

[johanbrandhorst]

Having merged Enum support into the query parameters, would it be possible to now support Enum Types in the path as well? Currently this appears to be limited by

grpc-gateway/protoc-gen-grpc-gateway/descriptor/types.go

Line 293 in fdcb7ea

// TODO(yugui) Handle Enum

not being implemented for Enum types.

[patrickwmcgee]

Hello wonderful grpc-gateway maintainers! I was wondering what the state of this issue is. Currently the Readme.md has the line

Enum fields in path parameter (including repeated enum fields).

This made me think I could use Enum fields in the request path via options like

rpc Echo(MyMessage) returns (SimpleMessage) {
	option (google.api.http) = {
		post: "/v1/example/echo/{my_enum}"
	};
}

Where my_enum is an Enum that is used in MyMessage.

If this is not the case, perhaps the Readme.md could be updated?

[johanbrandhorst]

The wording might not be great, enums are supported in query parameters of the URL, not the path.