Fix incorrect baseDir for django with embed support

[iredmail]

fixes #94

[ReneWerner87]

with the pull request we remove the functionality to specify the start folder

we should solve the basic problem you have locally

because before this change the code worked fine for me, so unless we can find a reproducible example where it is obvious that there is a problem with the code (and preferably on every machine), I wouldn't want to make any changes here.

[ReneWerner87]

okay, i think i misunderstood, unfortunately my test with the test code does not work with the variant, i will do some more tests

[ReneWerner87]

package main

import (
	"embed"
	"log"
	"net/http"

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

//go:embed views/*
var embedDirViews embed.FS
func main() {

	// Create a new engine
	// engine := django.New("./views", ".html")
	engine := django.NewFileSystem(http.FS(embedDirViews), ".html")

	// Or from an embedded system
	// See github.com/gofiber/embed for examples
	// engine := html.NewFileSystem(http.Dir("./views", ".django"))

	// Pass the engine to the Views
	app := fiber.New(fiber.Config{
		Views: engine,
	})

	app.Get("/", func(c *fiber.Ctx) error {
		// Render with and extends
		return c.Render("views/index", fiber.Map{
			"Title": "Hello, World!",
		})
	})

	app.Get("/embed", func(c *fiber.Ctx) error {
		// Render index within layouts/main
		return c.Render("views/embed", fiber.Map{
			"Title": "Hello, World!",
		}, "views/layouts/main2")
	})

	log.Fatal(app.Listen(":3000"))
}

and in the templates
without the "./"

thats working

root cause is this line
https://github.com/flosch/pongo2/blob/master/template_loader.go#L204-L209
when baseDir is "/" then the fullPath looks like "//views/......."

good found, @iredmail

but i have to test it with the other filesystem packages https://docs.gofiber.io/api/middleware/filesystem
If this is also positive, I will approve and merge it.

[ReneWerner87]

also work with rice:

but without the views start dir everywhere

also work with statik:

but different pfads, here everything is in the absolute path

also work with fileb0x

but with the start directory "views"

looks good i will approve it and ask fenny for a second look