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🧬 Template engine middleware for Fiber

Home Page: https://docs.gofiber.io/guide/templates

License: MIT License

Go 98.47% HTML 0.50% Handlebars 0.32% Pug 0.34% Slim 0.16% Mustache 0.21%

middleware fiber template-engine template

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template's Issues

Unescape specific bits of output

How do I output specific sections or variable without them being HTML encoded for safety? I understand the implications of doing this and how I'm exposing myself to XSS etc but I have this one specific bit of code that absolutely needs to be outputted untouched. I checked the article linked to in the read me and tried using template.HTML but it doesn't seem to be working.

I appreciate any pointers. Thank you.

html Engine cheet-sheet link doesn't work

https://github.com/gofiber/template/tree/master/html

Specifically, where it says "click here to preview", it returns a 404 error

How to use the method of pongo2 registerfilter?

`
import (
"github.com/flosch/pongo2"
)

pongo2.RegisterFilter("nl2br", Nl2brHtml)

func Nl2brHtml(in *pongo2.Value, param *pongo2.Value) (out *pongo2.Value, err *pongo2.Error) {
if !in.IsString() {
	s3 := " "
	return pongo2.AsValue(s3), nil
} else {
	s1 := in.String()
	s2 := strings.Replace(s1, "\n", "<br />", -1)
	return pongo2.AsValue(s2), nil
}

html/template: cannot Clone "layout" after it has executed

applicaiton.go

package main

import (
	"log"

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

func main() {
	engine := html.New("./views", ".html")
	app := fiber.New(fiber.Config{
		Views: engine,
	})

	app.Get("/", func(c *fiber.Ctx) error {

		return c.Render("index", fiber.Map{
			"Title": "Hello, World!",
		}, "layout")

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

layout.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>{{.Title}}</title>
</head>
<body>
    {{ embed }}
</body>
</html>

index.html

<h1>{{.Title}}</h1>

go.mod


module fiber.2

go 1.15

require (
	github.com/fasthttp/session/v2 v2.2.3 // indirect
	github.com/gofiber/fiber/v2 v2.0.1
	github.com/gofiber/session/v2 v2.0.0
	github.com/gofiber/template v1.6.0
	golang.org/x/sys v0.0.0-20200915084602-288bc346aa39 // indirect
)

first run it show "Hello World" if I reload page some thing happen and show error "html/template: cannot Clone "layout" after it has executed"

Why call pongo2 style template django?

Why call pongo2 style template django?
The readme for pongo2 says..

pongo2 is a Django-syntax LIKE templating-language.

(emphasis mine)
Since the syntax is not 100% alike I would rather not have to look for what libraries that is actually used for the django like syntax.
Just calling it pongo2 would be much more descriptive but I might have missed something.

How to get fiber.Ctx in add django function ?

Hello, How to get fiber.Ctx in add template(django) function ?

Update dependent package `logrus` to the latest `1.8.1`

Some package still uses old logrus (1.2.0, 1.6.0), might be a good idea to update logrus to the latest 1.8.1.

Wrong project homepage URL

Currently, this project homepage URL is https://docs.gofiber.io/middleware#template but it should be https://docs.gofiber.io/guide/templates

"wrong number of args" when using AddFunc

is there an example how to use functions passed with AddFunc in html templates?

this works only when the function is passed in via c.Render("", fiber.Map{"Static": ... but not with AddFunc

{{ call Static "bla" }}

 | template: layout:8:45: executing "layout" at <Static>: wrong number of args for Static: want 1 got 0

"malformed record data" when install gogo/[email protected]

Sample code:

package main

import (
    "strconv"
    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/template/jet"
)

func CustomRoute() *fiber.App {
    engine := jet.New("./views", ".jet")
    route := fiber.New(fiber.Config{
		Views: engine,
	})
    
    route.Get("/sample", func (c *fiber.Ctx) error {
        return c.Render("main", fiber.Map{
			"Title": "Hello, World!",
		})
    })
    return route
}

And compile code or use go mod tidy will get result:

go: github.com/gofiber/[email protected] requires
        github.com/cbroglie/[email protected] requires
        github.com/golangci/[email protected] requires
        github.com/spf13/[email protected] requires
        github.com/gogo/[email protected]/go.mod: verifying module: github.com/gogo/[email protected]/go.mod: malformed record data

Is anybody have same issue to me?

Ace layouts are rendered as text

The inner "embed" template is correct, but the layout is shown as text in browser.
Demo repository at: https://github.com/jorgefuertes/fiber-tests

Thanks.

Pug template is not working with Pug official examples

I'm struggled with PUG template using official PUG example like this one:

- var user = {description: 'foo bar baz'}
- var authorised = false
#user
  if user.description
    h2.green Description
    p.description= user.description
  else if authorised
    h2.blue Description
    p.description.
      User has no description,
      why not add one...
  else
    h2.red Description
    p.description User has no description

I'm getting this error:

template:5: template:9: Error lex: lexClass: expect class name line: 9

Also comparison with == operator:

if .someVar== "someValue"
    div someVar has someValue

leads to:

template: index:131: unexpected "=" in operand

How to call my css files from different directory?

I have structure of my project:

-public
--static
----resources
------css
-------*css files
----templates
-------*html files

don't know how to call my css files like what I do in mux.

Layout. Extending layout with includes in it breaks

I have 3 files: index.html, layout.html, and a partial/header.html

Using the django engine:

The index.html file extends the layout.html

{% extends "./views/layout.html" %}

{% block content %}
CONTENT
{% endblock %}

The layout.html includes the partials/header.html file

<!DOCTYPE html>
<html>
  <body>
          {% include "./views/partials/header.html" %}
          {% block content %}{% endblock %}
   </body>
</html>

The engine fails with the following error

18:10:17 app         | views: [Error (where: fromfile) in views\views\partials\header.html | Line 24 Col 32 near './views/partials/header.html'] unable to resolve template

Looks like it doubles the "views" folder path, and cannot find the partial exists

Race Condition in GoFiber HTML/Template render

Hello Gofiber team,

First of all, thank you all for making a great product.

I have encountered a problem that I believe is very serious with gofiber's html package.

I use the sample of the package at https://github.com/gofiber/template, no problem happens. But when I added the layout path to the first router handle, race conditions occurred.

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

I use the package https://github.com/tsliwowicz/go-wrk to test. The result is as follows:

==================
WARNING: DATA RACE
Read at 0x00c0003ae000 by goroutine 16:
  github.com/gofiber/fiber/v2/internal/bytebufferpool.(*ByteBuffer).Write()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/internal/bytebufferpool/bytebuffer.go:73 +0x45
  text/template.(*state).walk()
      C:/Program Files/Go/src/text/template/exec.go:271 +0x763
  text/template.(*state).walk()
      C:/Program Files/Go/src/text/template/exec.go:264 +0x1ad
  text/template.(*Template).execute()
      C:/Program Files/Go/src/text/template/exec.go:220 +0x2fe
  text/template.(*Template).Execute()
      C:/Program Files/Go/src/text/template/exec.go:203 +0xda
  html/template.(*Template).Execute()
      C:/Program Files/Go/src/html/template/template.go:124 +0x8a
  github.com/gofiber/template/html.(*Engine).Render.func1()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/[email protected]/html/html.go:208 +0x70
  runtime.call16()
      C:/Program Files/Go/src/runtime/asm_amd64.s:550 +0x44
  reflect.Value.Call()
      C:/Program Files/Go/src/reflect/value.go:337 +0xe4
  text/template.safeCall()
      C:/Program Files/Go/src/text/template/funcs.go:365 +0xf9
  text/template.(*state).evalCall()
      C:/Program Files/Go/src/text/template/exec.go:725 +0x6ee
  text/template.(*state).evalFunction()
      C:/Program Files/Go/src/text/template/exec.go:580 +0x1de
  text/template.(*state).evalCommand()
      C:/Program Files/Go/src/text/template/exec.go:467 +0x1ac
  text/template.(*state).evalPipeline()
      C:/Program Files/Go/src/text/template/exec.go:436 +0x224
  text/template.(*state).walk()
      C:/Program Files/Go/src/text/template/exec.go:255 +0x571
  text/template.(*state).walk()
      C:/Program Files/Go/src/text/template/exec.go:264 +0x1ad
  text/template.(*Template).execute()
      C:/Program Files/Go/src/text/template/exec.go:220 +0x2fe
  text/template.(*Template).Execute()
      C:/Program Files/Go/src/text/template/exec.go:203 +0xda
  html/template.(*Template).Execute()
      C:/Program Files/Go/src/html/template/template.go:124 +0x8a
  github.com/gofiber/template/html.(*Engine).Render()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/[email protected]/html/html.go:211 +0x3a6
  github.com/gofiber/fiber/v2.(*Ctx).Render()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:875 +0x1cf
  main.main.func1()
      D:/WORK/SelfServe/selfserve.project/test/main.go:24 +0x14e
  github.com/gofiber/fiber/v2.(*App).next()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:127 +0x441
  github.com/gofiber/fiber/v2.(*App).handler()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:155 +0x1e4
  github.com/gofiber/fiber/v2.(*App).handler-fm()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:143 +0x64
  github.com/valyala/fasthttp.(*Server).serveConn()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/server.go:2207 +0x1db6
  github.com/valyala/fasthttp.(*Server).serveConn-fm()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/server.go:1984 +0x6a
  github.com/valyala/fasthttp.(*workerPool).workerFunc()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:223 +0x10b
  github.com/valyala/fasthttp.(*workerPool).getCh.func1()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:195 +0x49

Previous write at 0x00c0003ae000 by goroutine 17:
  github.com/gofiber/fiber/v2/internal/bytebufferpool.(*ByteBuffer).Write()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/internal/bytebufferpool/bytebuffer.go:73 +0xc4
  text/template.(*state).walk()
      C:/Program Files/Go/src/text/template/exec.go:271 +0x763
  text/template.(*state).walk()
      C:/Program Files/Go/src/text/template/exec.go:264 +0x1ad
  text/template.(*Template).execute()
      C:/Program Files/Go/src/text/template/exec.go:220 +0x2fe
  text/template.(*Template).Execute()
      C:/Program Files/Go/src/text/template/exec.go:203 +0xda
  html/template.(*Template).Execute()
      C:/Program Files/Go/src/html/template/template.go:124 +0x8a
  github.com/gofiber/template/html.(*Engine).Render()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/[email protected]/html/html.go:211 +0x3a6
  github.com/gofiber/fiber/v2.(*Ctx).Render()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:875 +0x1cf
  main.main.func1()
      D:/WORK/SelfServe/selfserve.project/test/main.go:24 +0x14e
  github.com/gofiber/fiber/v2.(*App).next()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:127 +0x441
  github.com/gofiber/fiber/v2.(*App).handler()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:155 +0x1e4
  github.com/gofiber/fiber/v2.(*App).handler-fm()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:143 +0x64
  github.com/valyala/fasthttp.(*Server).serveConn()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/server.go:2207 +0x1db6
  github.com/valyala/fasthttp.(*Server).serveConn-fm()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/server.go:1984 +0x6a
  github.com/valyala/fasthttp.(*workerPool).workerFunc()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:223 +0x10b
  github.com/valyala/fasthttp.(*workerPool).getCh.func1()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:195 +0x49

Goroutine 16 (running) created at:
  github.com/valyala/fasthttp.(*workerPool).getCh()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:194 +0x1c4
  github.com/valyala/fasthttp.(*workerPool).Serve()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:147 +0x6a6
  github.com/valyala/fasthttp.(*Server).Serve()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/server.go:1737 +0x6b5
  github.com/gofiber/fiber/v2.(*App).Listen()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/app.go:602 +0x13c
  main.main()
      D:/WORK/SelfServe/selfserve.project/test/main.go:36 +0x211

Goroutine 17 (running) created at:
  github.com/valyala/fasthttp.(*workerPool).getCh()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:194 +0x1c4
  github.com/valyala/fasthttp.(*workerPool).Serve()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/workerpool.go:147 +0x6a6
  github.com/valyala/fasthttp.(*Server).Serve()
      C:/Users/TungDT/go/pkg/mod/github.com/valyala/[email protected]/server.go:1737 +0x6b5
  github.com/gofiber/fiber/v2.(*App).Listen()
      C:/Users/TungDT/go/pkg/mod/github.com/gofiber/fiber/[email protected]/app.go:602 +0x13c
  main.main()
      D:/WORK/SelfServe/selfserve.project/test/main.go:36 +0x211

How do I fix this problem?

Also, is there a way to define the layout path one time only to avoid re-define it again inside Render function?

Thanks!

mustache: partials not working with embedded filesystems

When using an embedded http.Filesystem partials don't use that filesystem, i.e. the partials are not included.

This is due to the following call:

template/mustache/mustache.go

Lines 137 to 138 in 500f0fd

 tmpl, err := mustache.ParseString(string(buf)) 

 //mustache.ParseStringPartials()

The mustache.ParseString method eventually calls
https://github.com/cbroglie/mustache/blob/2ebfd282f6d111da6e36db2ca3995abcab30dfb7/mustache.go#L717-L724
which uses the real filesystem to find partials.

v1.6.5 breaks the embeding support in django/pongo2 template engine

Hi, v1.6.5 currently breaks the embedding support. Running the application with a tool like packr fails with an error like this:

2020/12/04 23:15:03 stat /web/templates: no such file or directory
panic: stat /web/templates: no such file or directory

goroutine 1 [running]:
log.Panic(0xc0000c1ba8, 0x1, 0x1)
	/home/asrivastava/golang/go/src/log/log.go:351 +0xae
github.com/flosch/pongo2/v4.MustNewLocalFileSystemLoader(0xc0031353b0, 0xe, 0x1)
	/home/asrivastava/go/pkg/mod/github.com/flosch/pongo2/[email protected]/template_loader.go:27 +0x8a
github.com/gofiber/template/django.(*Engine).Load(0xc001c60870, 0x0, 0x0)
	/home/asrivastava/go/pkg/mod/github.com/gofiber/[email protected]/django/django.go:127 +0x11d

Recursive .html file parsing ?

Is it possible to parse html files recursive ? Let's say I have this directory structure:

--templates
-------global
-----------header.html
-----------footer.html
-----------navbar.html
-------pages
-----------index.html
-----------about.html

Right now with html.New("./templates", ".html")

It will error with: render: template index does not exist

It would be nice if the html.New would have a recursive option allowing to parse all templates in all subdirectories

😄

How to get go variables for layout or partial include files.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>{{.title}}</title> <!-- layouts file how get go variables -->
</head>
<body>
    {{embed}}
</body>
</html>

django template cannot find included template?

The error: views: [Error (where: fromfile) in ./partials/desktop_sidebar.html | Line 21 Col 18 near './partials/desktop_sidebar.html'] unable to resolve template

main.html in ./public/layouts folder, the partial is inside another folder called partials in this folder(./partials/):

<html :class="{ 'theme-dark': dark }" x-data="data()" lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>{{pageTitle}}Louve Admin Area</title>
    <link
      href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap"
      rel="stylesheet"
    />
    <link rel="stylesheet" href="/assets/admin/css/tailwind.output.css" />
    <script src="/assets/admin/js/alpine.min.js" defer></script>
    <script src="/assets/admin/js/init-alpine.js"></script>
    <link rel="stylesheet" href="/assets/admin/css/Chart.min.css" />
    <script src="/assets/admin/js/Chart.min.js" defer></script>
    <script src="/assets/admin/js/charts-lines.js" defer></script>
    <script src="/assets/admin/js/charts-pie.js" defer></script>
  </head>
  <body>
    <div class="flex h-screen bg-gray-50 dark:bg-gray-900" :class="{ 'overflow-hidden': isSideMenuOpen }">
      {% include "partials/desktop_sidebar.html" %} {% include "partials/mobile_sidebar.html" %}
      <div class="flex flex-col flex-1 w-full">
        {% include "partials/header.html" %} {% block content %}{% endblock %}
      </div>
    </div>
    {% if withModal %} {% include "partials/modal.html" %} {% endif %}
  </body>
</html>

It seems that the include syntax is unsupported by pongo2 or there's something wrong with my initialization of the engine?
I did it like this:

engine := django.New("public", ".html"))

I have a public folder like this:

public 
    -- admin
          -- assets
          -- layouts
                -- partials
    -- pub
    - admin-index.html

My intention is to separate the admin area templates with actual public templates, does this setup need an embedded filesystem instead of just plain location string?

Pongo2 addfunc is apparently not getting injected during templates rendering

Hi, thank you for creating this project and especially the latest new feature with pkger etc.

I was testing with adding functions to django/pongo2 templates but seems its not working. Just for the sake of reproduction I have added a simple pull request with corresponding test here #19

django template fails to load extends tags

I am writing an app that requires templates and switched to django because handlebars and html templates do not support template inheritance. However <% extends TAG in pongo2 seems to be failing because the baseDir is set to "/" and it uses http.ioFS Open() and that goes to embed.FS Open()... validation fails:

go/src/io/fs/fs.go

// ValidPath reports whether the given path name
// is valid for use in a call to Open.
//
// Path names passed to open are UTF-8-encoded,
// unrooted, slash-separated sequences of path elements, like “x/y/z”.
// Path names must not contain an element that is “.” or “..” or the empty string,
// except for the special case that the root directory is named “.”.
// Paths must not start or end with a slash: “/x” and “x/” are invalid.
//
// Note that paths are slash-separated on all systems, even Windows.
// Paths containing other characters such as backslash and colon
// are accepted as valid, but those characters must never be
// interpreted by an FS implementation as path element separators.
func ValidPath(name string) bool {

Seems you have fixed the issue:
10138ff

However there is no official release of this fix. TAG?

Template Rendering Incorrectly

Using the "template/html" package I am having issues rendering templates that derive a base layout all located in the same directory. I have a base layout template like so:

base.html

{{define "base"}}
<!DOCTYPE html>
<html lang="en">
<body>

header...

{{block "content" .}}{{ end }}

footer...

</body>
</html>
{{end}}

a first page like so which renders fine:

first.html

{{ template "base" .}}

{{define "content"}}
Some content
{{end}}

and a second page like so:

second.html

{{ template "base" .}}

{{define "content"}}
Some more content
{{end}}

My template configuration looks as follows:

    engine := html.New("./views", ".html")
    engine.Reload(true)

    app := fiber.New(fiber.Config{
        Views: engine,
    })

    app.Get("/first", func(c *fiber.Ctx) error {
        return c.Render("first", fiber.Map{})
    })

    app.Get("/second", func(c *fiber.Ctx) error {
        return c.Render("second", fiber.Map{})
    })

The issue I am encountering is that the second page renders the content of the first. Is this expected behavior in this situation? Normally with "template/html" I would call template.ParseFiles("first.html", "base.html") for the first template and template.ParseFiles("second.html", "base.html") for the second template. How exactly does Fiber determine which templates to parse based on the single template name? Thanks!

Cannot install Jet driver

Attempting to get the Jet driver produces the following error:

~: go get -u -v github.com/gofiber/template/jet
github.com/gofiber/template (download)
github.com/CloudyKit/jet (download)
cannot find package "github.com/CloudyKit/jet/v3" in any of:
	/usr/local/Cellar/go/1.15/libexec/src/github.com/CloudyKit/jet/v3 (from $GOROOT)
	$HOME/go/src/github.com/CloudyKit/jet/v3 (from $GOPATH)
github.com/gofiber/fiber (download)
github.com/gofiber/utils (download)
github.com/gorilla/schema (download)
github.com/mattn/go-colorable (download)
github.com/mattn/go-isatty (download)
get "golang.org/x/sys/unix": found meta tag get.metaImport{Prefix:"golang.org/x/sys", VCS:"git", RepoRoot:"https://go.googlesource.com/sys"} at //golang.org/x/sys/unix?go-get=1
get "golang.org/x/sys/unix": verifying non-authoritative meta tag
golang.org/x/sys (download)
get "golang.org/x/sys/internal/unsafeheader": found meta tag get.metaImport{Prefix:"golang.org/x/sys", VCS:"git", RepoRoot:"https://go.googlesource.com/sys"} at //golang.org/x/sys/internal/unsafeheader?go-get=1
get "golang.org/x/sys/internal/unsafeheader": verifying non-authoritative meta tag
github.com/valyala/bytebufferpool (download)
github.com/valyala/fasthttp (download)
github.com/andybalholm/brotli (download)
github.com/klauspost/compress (download)
github.com/valyala/tcplisten (download)

Go mod checksum failed

I am getting these error when running go mod download.
I didn't install template directly. It could be comes with gofiber

Have tried

rm go.sum
go clean -modcache
go mod tidy

Still doesn't work

github.com/gofiber/[email protected]: verifying module: checksum mismatch
	downloaded: h1:4lp4wn3pVr0JVbCrlQl3W5Pi4KBdmO8UUexucx/frtQ=
	sum.golang.org: h1:Vf4Fby9zUWVQyY2y69KKyRHsEYlIE+Pxb25M+jiaEL0=

SECURITY ERROR
This download does NOT match the one reported by the checksum server.
The bits may have been replaced on the origin server, or an attacker may
have intercepted the download attempt.

For more information, see 'go help module-auth'.

Support for EJS templating engine

Hello,

Do you have any plans for supporting EJS?

Thanks.

Loading Assets from manifest.json

I'm in the hunt of a best approach to add assets from build tools like webpack or Vite into the templates.

Most assets are bundled with assets tagged with version e.g index.12345678890.js and is mapped from within the manifest.json file .

And I would like to reference an asset like {{ asset eq "index.js" }} or {{ asset eq "main.css" }} which reads the manifest.json and adds the correct asset to the template .

What is the easiest way to make ajax-like call from web page to fiber api

Generaly speaking, I want to retrieve data from a server without reloading a page. I guess I can write a javascript code with something like get('fiber_api_route/get_data') and include it in html template. Is there a better way to do is without a need to write js code? The desired way of doing this is to add to html template something like <button onClick=golang_fiber_function!_name>.
Have a great day
Jacek

Function after render

is there a function that is executed after template rendering?, for example to minify html

Render not pass variable if set fiber.Map

I am use Jet template

This not work:

		err := c.Render("index", fiber.Map{
			"qwe": "Hello, World 👋!",
		})

This work:

		err := c.Render("index", map[string]interface{}{
			"qwe": "Hello, World 👋!",
		})

script tag Json support bug

Script data injection seems to be broken:

Go code:

		StreetNumber int
		StreetName   string
	}

	type User struct {
		Name    string
		Address Address
	}

	app.Get("/hello", func(c *fiber.Ctx) error {
		return c.Render("views/layouts/index", fiber.Map{
			"user": User{
				Name: "Tom",
				Address: Address{
					StreetNumber: 10,
					StreetName:   "Oaks st",
				},
			},
		})
	})

Template code:

<script>
    var d = {{{ user }}}
    console.log(d);
</script>

template output:

<script>
    var d = {Tom {%!s(int=10) Oaks st}}
    console.log(d);
</script>

Notice how the json is displayed with internal template codes?
Shouldn't this be the json representation of the data?

QuickTemplate support?

Hello,
Do you plan to include QuickTemplate ?

https://github.com/valyala/quicktemplate

Thanks.

Django views not rendering

I have a file like this in side of my project root views/index.html. No matter what I try for a path to render the template I get the error template views/index does not exist, or something of that nature depending on the path I try passing. I tried the same setup with mustache, and it worked fine.

package main

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

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

//go:embed views/*
var viewsfs embed.FS

func main() {
	engine := django.NewFileSystem(http.FS(viewsfs), ".html")

	app := fiber.New(fiber.Config{
		Views: engine,
	})

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

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

Handlebars: Helper already exists

Hello everyone.

I am trying to add a helper function via AddFunc to the handlebars template engine, but it crashes whenever I use this helper (when loading the page from the browser). I am using GO1.17.2 and the lastest packages (just downloaded them to test).

This is a minimal example case where it still crashes:

package main

import (
	"github.com/gofiber/template/handlebars"
	"github.com/gofiber/fiber/v2"
  "math"
  "log"
)

func main() {
	templateEngine := handlebars.New("./templates", ".html")
	templateEngine.Reload(true)
	templateEngine.Debug(true) // prints template names when parsed
	templateEngine.AddFunc("getLevelFromXP", func(xp uint) uint {
		return uint((-87.5+math.Sqrt(87.5*87.5+50.0*float64(xp)))/25)
	})

	app := fiber.New(fiber.Config {
		Views: templateEngine,
	})

  app.Get("/", func(c *fiber.Ctx) error {
    return c.Render("index", nil)
  })

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

The template simply contains {{getLevelFromXP 1200}} but it is not parsed because even when the index template is missing I still get the crash.

panic: Helper already registered: getLevelFromXP

goroutine 34 [running]:
github.com/aymerick/raymond.RegisterHelper({0xf84a9f, 0xe}, {0xef9b80, 0xfa9d00})
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/aymerick/[email protected]+incompatible/helper.go:43 +0x2a5
github.com/aymerick/raymond.RegisterHelpers(0xf90322)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/aymerick/[email protected]+incompatible/helper.go:55 +0x85
github.com/gofiber/template/handlebars.(*Engine).Load(0xc0003a36c0)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/[email protected]/handlebars/handlebars.go:112 +0xce
github.com/gofiber/template/handlebars.(*Engine).Render(0xc0003a36c0, {0x104f7c0, 0xc0000b5248}, {0xf828be, 0xa}, {0xf167c0, 0xc0004a0840}, {0x0, 0x0, 0x0})
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/[email protected]/handlebars/handlebars.go:184 +0x77
github.com/gofiber/fiber/v2.(*Ctx).Render(0xc0004b6000, {0xf828be, 0xa}, {0xf167c0, 0xc0004a0840}, {0x0, 0x0, 0x0})
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:1004 +0x1af
main.main.func1(0xf0c260)
	D:/projects/minimal/main.go:53 +0x245
github.com/gofiber/fiber/v2.(*App).next(0xc0002d6b60, 0xc0004b6000)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:127 +0x1d8
github.com/gofiber/fiber/v2.(*Ctx).Next(0x0)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/fiber/[email protected]/ctx.go:747 +0x53
github.com/gofiber/fiber/v2/middleware/logger.New.func2(0xc0004b6000)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/fiber/[email protected]/middleware/logger/logger.go:159 +0x1f7
github.com/gofiber/fiber/v2.(*App).next(0xc0002d6b60, 0xc0004b6000)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:127 +0x1d8
github.com/gofiber/fiber/v2.(*App).handler(0xc0002d6b60, 0x8ea577)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/gofiber/fiber/[email protected]/router.go:155 +0xe5
github.com/valyala/fasthttp.(*Server).serveConn(0xc0000c4000, {0x1062350, 0xc000408008})
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/valyala/[email protected]/server.go:2278 +0x122d
github.com/valyala/fasthttp.(*workerPool).workerFunc(0xc0000dc3c0, 0xc00040e060)
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/valyala/[email protected]/workerpool.go:223 +0xa9
github.com/valyala/fasthttp.(*workerPool).getCh.func1()
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/valyala/[email protected]/workerpool.go:195 +0x38
created by github.com/valyala/fasthttp.(*workerPool).getCh
	D:/coding/gosdk/go1.17.2/bin/pkg/mod/github.com/valyala/[email protected]/workerpool.go:194 +0x1b5

Any help is appreciated.

How to change layout Title

I want my layout to be a template for all my pages. However the

c.Render("index", fiber.Map{
            "Title": "Hello, World!",
        })

Can only change the content within body.

I need to change the HTML Title in the header as well.
Any way to do that? thx.

fiber.wiki link does no longer work

On the about section atleast on this middleware there is still a link to the old fiber.wiki page which is not in use anymore.
The fiber.wiki links should be changed with links to the new documentation site (docs.gofiber.io).

Html engine is always rendering the wrong file

I don't quite understand where I went wrong, but it seems quite logical to me. I made a simple copy for you to see, I am sharing the link below. Can someone help me with where I went wrong?

Example Repo

License issue: one GPL licensed dependent package is involved

Dear all,

According to go.sum (line 66), gofiber/template (indirectly) uses few GPL licensed packages, do I understand correctly that if my program uses gofiber/template, then my program must be open sourced under GPL?

gofiber/template (MIT)
     |
    \|/
github.com/cbroglie/mustache (MIT)
     |
    \|/
github.com/golangci/golangci-lint (GPL)
     |
    \|/
github.com/denis-tingajkin/go-header (GPL)

Compare the graph of dependent packages with and without github.com/cbroglie/mustache:

with mustache.pdf
without mustache.pdf

Unable to include partial from file

Hi, I am trying to include partial from a file but seem to have no success.

app := fiber.New()
app.Settings.TemplateEngine = template.Handlebars()
app.Settings.TemplateFolder = "./views"

And in the route I do the following

func consoleDefault(c *fiber.Ctx) {
	bind := fiber.Map{
		"name": "John",
		"age":  35,
	}
	if err := c.Render("index.hbs", bind); err != nil {
		c.Status(500).Send(err.Error())
	}
}

My index.hbs includes and renders the name variable currently. But the partial is not working. I have tried with relative paths, with and without extensions and no luck.

{{> header.hbs }}
{{ name }}

I keep getting this error.

I have looked into the Raymond repo and there are no clear examples of how to use it.

Thanks in advance.

HTML template error, but dubug does not output the wrong file name, unable to find what file it is

views: [Error (where: parser) in <string> | Line 70 Col 62 near '('] '}}' expected

django: unable to resolve template

Django engine (pongo2) can not resolve the layout template file with the sample code in this repo. Here's how to reproduce it.

Tested environments

Ubuntu 18.04 (x86_64), Go 1.16
macOS 11.2.2, Go 1.16

$ git clone --depth=1 [email protected]:gofiber/recipes.git
$ cd recipes/template/
$ go mod vendor && go mod download && go mod tidy
$ cd django/
$ go run main.go 
views: [Error (where: fromfile) in ./layouts/main1.html] unable to resolve template

 ┌───────────────────────────────────────────────────┐
 │                    Fiber v2.0.1                   │
 │               http://127.0.0.1:3000               │
 │                                                   │
 │ Handlers ............. 4  Threads ............. 1 │
 │ Prefork ....... Disabled  PID .............. 3073 │
 └───────────────────────────────────────────────────┘

If i changed the first in views/index.html from {% extends "./layouts/main1.html" %} to {% extends "./views/layouts/main1.html" %}, then it works. But since we have django.New("./views", ".html") in main.go, isn't it expected that pongo2 looks for files under views/ directory and no need to write this directory name in the extends tag?

Also, with the modified working template file ({% extends "./views/layouts/main1.html" %}), it failed with embed package. Sample code below:

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("index", fiber.Map{
                        "Title": "Hello, World!",
                })

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

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

No matter how i changed the path in extends tag, always error like this:

views: [Error (where: fromfile) in ./views/layouts/main1.html] unable to resolve template

close

if use engine.Reload(false) , Addfunc cannot be displayed normally

engine.Reload(true)

engine.Reload(false) , My custom function doesn't display properly

When calling Render with a layout and a nil binding: panic: assignment to entry in nil map

The issue is that in jetVarMap it assumes that a nil binding should result in a nil jet.VarMap.

template/jet/jet.go

Lines 233 to 237 in c4b2c7e

 func jetVarMap(binding interface{}) jet.VarMap { 

 var bind jet.VarMap 

 if binding == nil { 

 return bind 

 }

But if a layout is specified, it is then used to set a function and panics:

template/jet/jet.go

Lines 219 to 229 in c4b2c7e

 bind := jetVarMap(binding) 

 if len(layout) > 0 { 

 lay, err := e.Templates.GetTemplate(layout[0]) 

 if err != nil { 

 return err 

 } 

 bind.Set(e.layout, func() { 

 _ = tmpl.Execute(out, bind, nil) 

 }) 

 return lay.Execute(out, bind, nil) 

 }

This could be solved either by replacing var bind jet.VarMap with bind := make(jet.VarMap) or by checking if bind is nil (and makeing it if not) in Render right after if len(layout) > 0 {.

// var bind jet.VarMap
bind := make(jet.VarMap)

Or in Render

bind := jetVarMap(binding) 
 if len(layout) > 0 { 
        if bind == nil {
                bind = make(jet.VarMap)
        }
 	lay, err := e.Templates.GetTemplate(layout[0]) 
 	if err != nil { 
 		return err 
 	} 
 	bind.Set(e.layout, func() { 
 		_ = tmpl.Execute(out, bind, nil) 
 	}) 
 	return lay.Execute(out, bind, nil) 
 }

I would send a pull request, but I'm not sure if it matters to you which way it is fixed. I would think it would be much clearer to put it in jetVarMap and get rid of the other calls to make there, but I guess there was a reason to not do that in the first place.

The work around is for the caller of Render to just specify an empty jet.VarMap or fiber.Map but that is not obvious and panicing from forgetting is not great.

Django engine Built-in date pipe didn't work

hi good day.
I was tring to use date format
{{ value|date:"D d M Y" }}

but rendered html is
D d M Y

if remove date pipe

Is anyway to fix this?
thanks

Template engine can only load template files ending in .html

The Jet template engine should support .html.jett, .jet.html and .jet as shown here and here but can only load files ending with .html because of the code here

The associated log.Fatal method calls are also missing a ' on the left side of .jet.html

How to include template from variable value or function call result?

Hi! I couldn't find an answer on google or documentation. I want pass template file via variable or function like this:

{% include "./Lumia/partials/primitives/{{Value.GetType()}}.html" with Value=Value only %}

but get error:

views: [Error (where: fromfile) in partials\primitives\{{Value.GetType()}}.html | Line 1 Col 12 near 'partials/primitives/{{Value.GetType()}}.html'] unable to resolve template

Is there any workaround?

rendering template multiple times fails

When html engine has Reload(true), then rendering multiple times, it fails with 'html/template: cannot Parse after Execute'.

func Test_HTML_Render_Twice(t *testing.T) {
	engine := New("./views", ".html")
	engine.Reload(true)

	engine.AddFunc("isAdmin", func(user string) bool {
		return user == "admin"
	})
	if err := engine.Load(); err != nil {
		t.Fatalf("load: %v\n", err)
	}

	var buf, buf2 bytes.Buffer
	engine.Render(&buf, "index", map[string]interface{}{
		"Title": "Hello, World!",
	}, "layouts/main")

	err := engine.Render(&buf2, "index", map[string]interface{}{
		"Title": "Hello, World!",
	}, "layouts/main")

	if err != nil {
		fmt.Println(err.Error())
	}

	expect := `<!DOCTYPE html><html><head><title>Main</title></head><body><h2>Header</h2><h1>Hello, World!</h1><h2>Footer</h2></body></html>`
	result := trim(buf2.String())
	if expect != result {
		t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
	}
}

Question: How to parse Html Tag from string?

Example:

package main

import (
	"log"

	"github.com/gofiber/fiber"
	"github.com/gofiber/template/html"
)

func Greeting(greeting string) string {
	// set default values -- the proper way
	if greeting == "" {
		greeting = "<p><b>Rocks!</b></p>"
	}

	return greeting
}

func main() {
	// Initialize standard Go html template engine
	engine := html.New("./views", ".html")

	app := fiber.New(&fiber.Settings{
		Views: engine,
	})

	app.Get("/", func(c *fiber.Ctx) {
		// Render index template
		_ = c.Render("index", fiber.Map{
			"Greetings": Greeting(""),
		})
	})

	// 404 Handler
	app.Use(func(c *fiber.Ctx) {
		c.SendStatus(404) // => 404 "Not Found"
	})

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

index.html

<!DOCTYPE html>
<body>
    <b>{{.Greetings}}</b>
</body>
</html>

mustache: variables can be used in template but not layout

Due to a small typo-bug the binding interface{} passed to the Render funtion is not used when rendering the layout.
I submitted #85 to fix this.

	tmpl, err := mustache.ParseString(string(buf))
	//mustache.ParseStringPartials()

	func jetVarMap(binding interface{}) jet.VarMap {
	var bind jet.VarMap
	if binding == nil {
	return bind
	}

	bind := jetVarMap(binding)
	if len(layout) > 0 {
	lay, err := e.Templates.GetTemplate(layout[0])
	if err != nil {
	return err
	}
	bind.Set(e.layout, func() {
	_ = tmpl.Execute(out, bind, nil)
	})
	return lay.Execute(out, bind, nil)
	}

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