[FEATURE] When using iris and gRPC, if a struct contains a parent struct, the parent struct will be handled and parsed.

[AliangCoder]

Describe the bug
When using iris and gRPC, if a struct contains a parent struct, the parent struct will be handled and parsed.
To Reproduce
Steps to reproduce the behavior:

type myController struct {
	// Ctx iris.Context
	BaseController
	SingletonDependency service
}

When I use it

ctrl := &myController{}
// Register gRPC server.
grpcServer := grpc.NewServer()
pb.RegisterGreeterServer(grpcServer, ctrl)
mvc.New(app).
	Register(new(myService)).
	Handle(ctrl, mvc.GRPC{
		Server:      grpcServer,           // Required.
		ServiceName: "helloworld.Greeter", // Required.
		Strict:      false,
	})

BaseController

package main

import (
	"github.com/kataras/iris/v12"
	"github.com/kataras/iris/v12/mvc"
)

type BaseController struct {
	Ctx iris.Context
}

func (c *BaseController) ReadJSON(i interface{}) error {

	return nil
}

func (c *BaseController) MessageResp(success bool, message string) *mvc.Response {

	return nil
}

func (c *BaseController) ErrParamsResp() *mvc.Response {

	return nil
}

stdout

POST: /helloworld.Greeter/ErrParamsResp gRPC myController (./mvc/grpc.go:46)
      • myController.ErrParamsResp (./_examples/mvc/grpc-compatible/base.go:22)
POST: /helloworld.Greeter/MessageResp gRPC myController (./mvc/grpc.go:46)
      • myController.MessageResp (./_examples/mvc/grpc-compatible/base.go:17)
POST: /helloworld.Greeter/ReadJSON gRPC myController (./mvc/grpc.go:46)
      • myController.ReadJSON (./_examples/mvc/grpc-compatible/base.go:12)
POST: /helloworld.Greeter/SayHello gRPC myController (./mvc/grpc.go:46)
      • myController.SayHello (./_examples/mvc/grpc-compatible/main.go:89)

Expected behavior
A clear and concise description of what you expected to happen.
stdout should be

POST: /helloworld.Greeter/SayHello gRPC myController (./mvc/grpc.go:46)
      • myController.SayHello (./_examples/mvc/grpc-compatible/main.go:89)

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: mac m1
  iris.Version
• v12.2.0

[kataras]

Hello @AliangCoder, this is expected, it's a good feature actually. All embedded structs and the controller struct it self are parsed as one request controller. This gives you the ability to make generic base controllers that can be used on any other controller. I don't know why is this a problem but if it makes your life harder, we could provide an option/setting to skip this feature.

[kataras]

Hello @AliangCoder, I am back with a solution for you. I've just pushed a commit to the master branch (go get github.com/kataras/iris/v12@master) which gives you two options to ignore embedded struct's methods:

1. Global

mvc.IgnoreEmbeddedControllers = true

2. Per Controller using mvc.IgnoreEmbedded option on .Handle method:

mvc.New(app).
	Register(new(myService)).
	Handle(ctrl, mvc.IgnoreEmbedded, mvc.GRPC{
		Server:      grpcServer,           // Required.
		ServiceName: "helloworld.Greeter", // Required.
		Strict:      false,
	})

[AliangCoder]

Thanks