errors/middleware.go
func SetErrorHandler(status int, handler ErrorHandler) scaffold.Middleware {
	return scaffold.Middleware(func(next scaffold.Handler) scaffold.Handler {
		return scaffold.HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) {
			key := fmt.Sprintf("error_handler_%d", status)
			ctx = context.WithValue(ctx, key, handler)

			next.CtxServeHTTP(ctx, w, r)
		})
	})
}
func SetErrorHandler(status int, handler ErrorHandler) scaffold.Middleware {
	return scaffold.Middleware(func(next scaffold.Handler) scaffold.Handler {
		return scaffold.HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) {
			key := fmt.Sprintf("error_handler_%d", status)
			ctx = context.WithValue(ctx, key, handler)

			next.CtxServeHTTP(ctx, w, r)
		})
	})
}
func SetErrorHandler ( status int , handler ErrorHandler ) scaffold . Middleware { return scaffold . Middleware ( func ( next scaffold . Handler ) scaffold . Handler { return scaffold . HandlerFunc ( func ( ctx context . Context , w http . ResponseWriter , r * http . Request ) { key := fmt . Sprintf ( " " , status ) ctx = context . WithValue ( ctx , key , handler ) next . CtxServeHTTP ( ctx , w , r ) } ) } ) }
// SetErrorHandler returns Middleware that can be used to set the error handler
SetErrorHandler returns Middleware that can be used to set the error handler