How to set Routes Group in Go Fiber V2 from separated file?

Question

I want to make seperate files for each sub main routes. I am using go 1.17

main.go

package main

import (
    "rolling_glory_go/routes"

    "github.com/gofiber/fiber/v2"
)

func main() {
    app := fiber.New()

    app.Get("/", func(c *fiber.Ctx) error {
        err := c.SendString("Hello golang!")
        return err
    })

    routes.R_login(app.Group("/login"))
    routes.R_users(app.Group("/users"))

    app.Listen(":3000")
}

I want to import routes from r_login.go and r_users.go so i could manage many routes from different files and not put many routes from single file in main.go. I got an error like this.

.\main.go:17:26: cannot use app.Group("/login") (type fiber.Router) as type *fiber.Group in argument to routes.R_login: need type assertion
.\main.go:18:26: cannot use app.Group("/users") (type fiber.Router) as type *fiber.Group in argument to routes.R_users: need type assertion

My Structure Folder

r_login.go

package routes

import "github.com/gofiber/fiber/v2"

func R_login(router *fiber.Group) {
    router.Get("/", func(c *fiber.Ctx) error {
        return c.SendString("respond with a resource")
    })
}

r_users.go

package routes

import "github.com/gofiber/fiber/v2"

func R_users(router *fiber.Group) {
    router.Get("/", func(c *fiber.Ctx) error {
        return c.SendString("respond with a resource")
    })
}

How to fix this ?

hao · Accepted Answer · 2022-02-09T03:29:49.203

4

As you have app.Group("/login") which of type fiber.Router , just modify R_login to have it accept this type.

package routes

import "github.com/gofiber/fiber/v2"

func R_login(router fiber.Router) {
    router.Get("/", func(c *fiber.Ctx) error {
        return c.SendString("respond with a resource")
    })
}

edited Feb 09 '22 at 03:29

answered Feb 09 '22 at 03:15

hao

639
5
11

i got this error `routes\r_login.go:6:8: router.Get undefined (type *fiber.Router is pointer to interface, not interface)` – Gagantous Feb 09 '22 at 03:27
Just edit my answer, remove the * will do. – hao Feb 09 '22 at 03:30
but why i have to type fiber.Router while this repo https://github.com/vo9312/gofiber-starter/tree/48545ddee3b5d84d6d228e3d3dc27a3a468cec48, and see this its route said `*fiber.Group` https://github.com/vo9312/gofiber-starter/blob/48545ddee3b5d84d6d228e3d3dc27a3a468cec48/routes/users.go – Gagantous Feb 09 '22 at 03:44
1

Though the repo use fiber without v2, I believe it would not works, cause it pass an interface to an func which requires a pointer to a struct. – hao Feb 09 '22 at 03:56
thank sir, now i know and also it works – Gagantous Feb 09 '22 at 05:05
i cant find that information in fiber doc, how do u know that – Gagantous Feb 10 '22 at 06:05
1

read the code, and figure it out. – hao Feb 10 '22 at 07:25

score 1 · Answer 2 · answered Aug 04 '23 at 18:16

if anyone is still having issues I'm doing this in fiber/v2

func BookRouter(router fiber.Router) {
    router.Get("/", GetBook)
    router.Get("/all", GetBooks)
    router.Post("/", NewBook)
    router.Delete("/", DeleteBook)
}
 
    books := app.Group("/book")  //server.go
    books.Route("/", book.BookRouter)

How to set Routes Group in Go Fiber V2 from separated file?

2 Answers2