* First batch of changes for the refactor Added the support of gin in routes and other services/utils Begining implementation of JetHTML * Remove os folder * Move scrapers to own repo * Second batch of changes All .jet.html are the working templates. You can now test this PR, the index Page and upload works. If you want to complete the other html templates, you're welcome * Move captcha to util * Move uploadService to utils * Use govalidator instead of regex * Third batch of changes All the front end should as previously. I also fixed some minor things unrelated to the refactor (mostly style issues on static pages) Now errors can be accessed by importing the "errors" helpers and using the `yield errors(name="xxx")` command in templates. Same for infos. Templates are now more hierarchized with a base template "base.jet.html" which is extended depending on the context in "index_site" or "index_admin" layouts. Those layouts are extended than in every pages. Other helpers are captcha to render a captcha `yield captcha(captchaid="xxx")` And also csrf, with the command `yield csrf_field()` To translate, you don't have anymore to do `call $.T "xxx"`, you just have to do `T("xxx")`. Pages for the website part are in folders in the folder "templates/site". Pages for the admin part are in "templates/admin". Layouts are separated in "templates/layouts". Helpers and menu are in "templates/layouts/helpers" and "templates/layouts/menu". Error pages should be put in "templates/errors" * Added test on templates When adding a new template, you have to tell to template_test.go, the context of the new template (if it doesn't use the common context) * Panel admin works Now the templating part should work. The PR can now be fully tested. I think we should push the templating PR and do the routes/controllers/removal of services in another branch. So we know that this one is functional * Updated dependencies * Fixed test for modelhelper * Fix testing for commentlist * Fix travis :') * Just renamed router and removed network * Applying same SEO fix * Update form_validator.go * Added back regexp package
18 Kio
Gin Web Framework
![](https://raw.githubusercontent.com/gin-gonic/gin/master/logo.jpg)
Gin is a web framework written in Go (Golang). It features a martini-like API with much better performance, up to 40 times faster thanks to httprouter. If you need performance and good productivity, you will love Gin.
$ cat test.go
package main
import "gopkg.in/gin-gonic/gin.v1"
func main() {
r := gin.Default()
r.GET("/ping", func(c *gin.Context) {
c.JSON(200, gin.H{
"message": "pong",
})
})
r.Run() // listen and serve on 0.0.0.0:8080
}
Benchmarks
Gin uses a custom version of HttpRouter
Benchmark name | (1) | (2) | (3) | (4) |
---|---|---|---|---|
BenchmarkAce_GithubAll | 10000 | 109482 | 13792 | 167 |
BenchmarkBear_GithubAll | 10000 | 287490 | 79952 | 943 |
BenchmarkBeego_GithubAll | 3000 | 562184 | 146272 | 2092 |
BenchmarkBone_GithubAll | 500 | 2578716 | 648016 | 8119 |
BenchmarkDenco_GithubAll | 20000 | 94955 | 20224 | 167 |
BenchmarkEcho_GithubAll | 30000 | 58705 | 0 | 0 |
BenchmarkGin_GithubAll | 30000 | 50991 | 0 | 0 |
BenchmarkGocraftWeb_GithubAll | 5000 | 449648 | 133280 | 1889 |
BenchmarkGoji_GithubAll | 2000 | 689748 | 56113 | 334 |
BenchmarkGoJsonRest_GithubAll | 5000 | 537769 | 135995 | 2940 |
BenchmarkGoRestful_GithubAll | 100 | 18410628 | 797236 | 7725 |
BenchmarkGorillaMux_GithubAll | 200 | 8036360 | 153137 | 1791 |
BenchmarkHttpRouter_GithubAll | 20000 | 63506 | 13792 | 167 |
BenchmarkHttpTreeMux_GithubAll | 10000 | 165927 | 56112 | 334 |
BenchmarkKocha_GithubAll | 10000 | 171362 | 23304 | 843 |
BenchmarkMacaron_GithubAll | 2000 | 817008 | 224960 | 2315 |
BenchmarkMartini_GithubAll | 100 | 12609209 | 237952 | 2686 |
BenchmarkPat_GithubAll | 300 | 4830398 | 1504101 | 32222 |
BenchmarkPossum_GithubAll | 10000 | 301716 | 97440 | 812 |
BenchmarkR2router_GithubAll | 10000 | 270691 | 77328 | 1182 |
BenchmarkRevel_GithubAll | 1000 | 1491919 | 345553 | 5918 |
BenchmarkRivet_GithubAll | 10000 | 283860 | 84272 | 1079 |
BenchmarkTango_GithubAll | 5000 | 473821 | 87078 | 2470 |
BenchmarkTigerTonic_GithubAll | 2000 | 1120131 | 241088 | 6052 |
BenchmarkTraffic_GithubAll | 200 | 8708979 | 2664762 | 22390 |
BenchmarkVulcan_GithubAll | 5000 | 353392 | 19894 | 609 |
BenchmarkZeus_GithubAll | 2000 | 944234 | 300688 | 2648 |
(1): Total Repetitions
(2): Single Repetition Duration (ns/op)
(3): Heap Memory (B/op)
(4): Average Allocations per Repetition (allocs/op)
Gin v1. stable
- Zero allocation router.
- Still the fastest http router and framework. From routing to writing.
- Complete suite of unit tests
- Battle tested
- API frozen, new releases will not break your code.
Start using it
-
Download and install it:
$ go get gopkg.in/gin-gonic/gin.v1
-
Import it in your code:
import "gopkg.in/gin-gonic/gin.v1"
-
(Optional) Import
net/http
. This is required for example if using constants such ashttp.StatusOK
.import "net/http"
API Examples
Using GET, POST, PUT, PATCH, DELETE and OPTIONS
func main() {
// Creates a gin router with default middleware:
// logger and recovery (crash-free) middleware
router := gin.Default()
router.GET("/someGet", getting)
router.POST("/somePost", posting)
router.PUT("/somePut", putting)
router.DELETE("/someDelete", deleting)
router.PATCH("/somePatch", patching)
router.HEAD("/someHead", head)
router.OPTIONS("/someOptions", options)
// By default it serves on :8080 unless a
// PORT environment variable was defined.
router.Run()
// router.Run(":3000") for a hard coded port
}
Parameters in path
func main() {
router := gin.Default()
// This handler will match /user/john but will not match neither /user/ or /user
router.GET("/user/:name", func(c *gin.Context) {
name := c.Param("name")
c.String(http.StatusOK, "Hello %s", name)
})
// However, this one will match /user/john/ and also /user/john/send
// If no other routers match /user/john, it will redirect to /user/john/
router.GET("/user/:name/*action", func(c *gin.Context) {
name := c.Param("name")
action := c.Param("action")
message := name + " is " + action
c.String(http.StatusOK, message)
})
router.Run(":8080")
}
Querystring parameters
func main() {
router := gin.Default()
// Query string parameters are parsed using the existing underlying request object.
// The request responds to a url matching: /welcome?firstname=Jane&lastname=Doe
router.GET("/welcome", func(c *gin.Context) {
firstname := c.DefaultQuery("firstname", "Guest")
lastname := c.Query("lastname") // shortcut for c.Request.URL.Query().Get("lastname")
c.String(http.StatusOK, "Hello %s %s", firstname, lastname)
})
router.Run(":8080")
}
Multipart/Urlencoded Form
func main() {
router := gin.Default()
router.POST("/form_post", func(c *gin.Context) {
message := c.PostForm("message")
nick := c.DefaultPostForm("nick", "anonymous")
c.JSON(200, gin.H{
"status": "posted",
"message": message,
"nick": nick,
})
})
router.Run(":8080")
}
Another example: query + post form
POST /post?id=1234&page=1 HTTP/1.1
Content-Type: application/x-www-form-urlencoded
name=manu&message=this_is_great
func main() {
router := gin.Default()
router.POST("/post", func(c *gin.Context) {
id := c.Query("id")
page := c.DefaultQuery("page", "0")
name := c.PostForm("name")
message := c.PostForm("message")
fmt.Printf("id: %s; page: %s; name: %s; message: %s", id, page, name, message)
})
router.Run(":8080")
}
id: 1234; page: 1; name: manu; message: this_is_great
Another example: upload file
References issue #548.
func main() {
router := gin.Default()
router.POST("/upload", func(c *gin.Context) {
file, header , err := c.Request.FormFile("upload")
filename := header.Filename
fmt.Println(header.Filename)
out, err := os.Create("./tmp/"+filename+".png")
if err != nil {
log.Fatal(err)
}
defer out.Close()
_, err = io.Copy(out, file)
if err != nil {
log.Fatal(err)
}
})
router.Run(":8080")
}
Grouping routes
func main() {
router := gin.Default()
// Simple group: v1
v1 := router.Group("/v1")
{
v1.POST("/login", loginEndpoint)
v1.POST("/submit", submitEndpoint)
v1.POST("/read", readEndpoint)
}
// Simple group: v2
v2 := router.Group("/v2")
{
v2.POST("/login", loginEndpoint)
v2.POST("/submit", submitEndpoint)
v2.POST("/read", readEndpoint)
}
router.Run(":8080")
}
Blank Gin without middleware by default
Use
r := gin.New()
instead of
r := gin.Default()
Using middleware
func main() {
// Creates a router without any middleware by default
r := gin.New()
// Global middleware
r.Use(gin.Logger())
r.Use(gin.Recovery())
// Per route middleware, you can add as many as you desire.
r.GET("/benchmark", MyBenchLogger(), benchEndpoint)
// Authorization group
// authorized := r.Group("/", AuthRequired())
// exactly the same as:
authorized := r.Group("/")
// per group middleware! in this case we use the custom created
// AuthRequired() middleware just in the "authorized" group.
authorized.Use(AuthRequired())
{
authorized.POST("/login", loginEndpoint)
authorized.POST("/submit", submitEndpoint)
authorized.POST("/read", readEndpoint)
// nested group
testing := authorized.Group("testing")
testing.GET("/analytics", analyticsEndpoint)
}
// Listen and serve on 0.0.0.0:8080
r.Run(":8080")
}
Model binding and validation
To bind a request body into a type, use model binding. We currently support binding of JSON, XML and standard form values (foo=bar&boo=baz).
Note that you need to set the corresponding binding tag on all fields you want to bind. For example, when binding from JSON, set json:"fieldname"
.
When using the Bind-method, Gin tries to infer the binder depending on the Content-Type header. If you are sure what you are binding, you can use BindWith.
You can also specify that specific fields are required. If a field is decorated with binding:"required"
and has a empty value when binding, the current request will fail with an error.
// Binding from JSON
type Login struct {
User string `form:"user" json:"user" binding:"required"`
Password string `form:"password" json:"password" binding:"required"`
}
func main() {
router := gin.Default()
// Example for binding JSON ({"user": "manu", "password": "123"})
router.POST("/loginJSON", func(c *gin.Context) {
var json Login
if c.BindJSON(&json) == nil {
if json.User == "manu" && json.Password == "123" {
c.JSON(http.StatusOK, gin.H{"status": "you are logged in"})
} else {
c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
}
}
})
// Example for binding a HTML form (user=manu&password=123)
router.POST("/loginForm", func(c *gin.Context) {
var form Login
// This will infer what binder to use depending on the content-type header.
if c.Bind(&form) == nil {
if form.User == "manu" && form.Password == "123" {
c.JSON(http.StatusOK, gin.H{"status": "you are logged in"})
} else {
c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"})
}
}
})
// Listen and serve on 0.0.0.0:8080
router.Run(":8080")
}
###Multipart/Urlencoded binding
package main
import (
"gopkg.in/gin-gonic/gin.v1"
)
type LoginForm struct {
User string `form:"user" binding:"required"`
Password string `form:"password" binding:"required"`
}
func main() {
router := gin.Default()
router.POST("/login", func(c *gin.Context) {
// you can bind multipart form with explicit binding declaration:
// c.BindWith(&form, binding.Form)
// or you can simply use autobinding with Bind method:
var form LoginForm
// in this case proper binding will be automatically selected
if c.Bind(&form) == nil {
if form.User == "user" && form.Password == "password" {
c.JSON(200, gin.H{"status": "you are logged in"})
} else {
c.JSON(401, gin.H{"status": "unauthorized"})
}
}
})
router.Run(":8080")
}
Test it with:
$ curl -v --form user=user --form password=password http://localhost:8080/login
XML, JSON and YAML rendering
func main() {
r := gin.Default()
// gin.H is a shortcut for map[string]interface{}
r.GET("/someJSON", func(c *gin.Context) {
c.JSON(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
})
r.GET("/moreJSON", func(c *gin.Context) {
// You also can use a struct
var msg struct {
Name string `json:"user"`
Message string
Number int
}
msg.Name = "Lena"
msg.Message = "hey"
msg.Number = 123
// Note that msg.Name becomes "user" in the JSON
// Will output : {"user": "Lena", "Message": "hey", "Number": 123}
c.JSON(http.StatusOK, msg)
})
r.GET("/someXML", func(c *gin.Context) {
c.XML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
})
r.GET("/someYAML", func(c *gin.Context) {
c.YAML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
})
// Listen and serve on 0.0.0.0:8080
r.Run(":8080")
}
####Serving static files
func main() {
router := gin.Default()
router.Static("/assets", "./assets")
router.StaticFS("/more_static", http.Dir("my_file_system"))
router.StaticFile("/favicon.ico", "./resources/favicon.ico")
// Listen and serve on 0.0.0.0:8080
router.Run(":8080")
}
####HTML rendering
Using LoadHTMLTemplates()
func main() {
router := gin.Default()
router.LoadHTMLGlob("templates/*")
//router.LoadHTMLFiles("templates/template1.html", "templates/template2.html")
router.GET("/index", func(c *gin.Context) {
c.HTML(http.StatusOK, "index.tmpl", gin.H{
"title": "Main website",
})
})
router.Run(":8080")
}
templates/index.tmpl
<html>
<h1>
{{ .title }}
</h1>
</html>
Using templates with same name in different directories
func main() {
router := gin.Default()
router.LoadHTMLGlob("templates/**/*")
router.GET("/posts/index", func(c *gin.Context) {
c.HTML(http.StatusOK, "posts/index.tmpl", gin.H{
"title": "Posts",
})
})
router.GET("/users/index", func(c *gin.Context) {
c.HTML(http.StatusOK, "users/index.tmpl", gin.H{
"title": "Users",
})
})
router.Run(":8080")
}
templates/posts/index.tmpl
{{ define "posts/index.tmpl" }}
<html><h1>
{{ .title }}
</h1>
<p>Using posts/index.tmpl</p>
</html>
{{ end }}
templates/users/index.tmpl
{{ define "users/index.tmpl" }}
<html><h1>
{{ .title }}
</h1>
<p>Using users/index.tmpl</p>
</html>
{{ end }}
You can also use your own html template render
import "html/template"
func main() {
router := gin.Default()
html := template.Must(template.ParseFiles("file1", "file2"))
router.SetHTMLTemplate(html)
router.Run(":8080")
}
Redirects
Issuing a HTTP redirect is easy:
r.GET("/test", func(c *gin.Context) {
c.Redirect(http.StatusMovedPermanently, "http://www.google.com/")
})
Both internal and external locations are supported.
Custom Middleware
func Logger() gin.HandlerFunc {
return func(c *gin.Context) {
t := time.Now()
// Set example variable
c.Set("example", "12345")
// before request
c.Next()
// after request
latency := time.Since(t)
log.Print(latency)
// access the status we are sending
status := c.Writer.Status()
log.Println(status)
}
}
func main() {
r := gin.New()
r.Use(Logger())
r.GET("/test", func(c *gin.Context) {
example := c.MustGet("example").(string)
// it would print: "12345"
log.Println(example)
})
// Listen and serve on 0.0.0.0:8080
r.Run(":8080")
}
Using BasicAuth() middleware
// simulate some private data
var secrets = gin.H{
"foo": gin.H{"email": "foo@bar.com", "phone": "123433"},
"austin": gin.H{"email": "austin@example.com", "phone": "666"},
"lena": gin.H{"email": "lena@guapa.com", "phone": "523443"},
}
func main() {
r := gin.Default()
// Group using gin.BasicAuth() middleware
// gin.Accounts is a shortcut for map[string]string
authorized := r.Group("/admin", gin.BasicAuth(gin.Accounts{
"foo": "bar",
"austin": "1234",
"lena": "hello2",
"manu": "4321",
}))
// /admin/secrets endpoint
// hit "localhost:8080/admin/secrets
authorized.GET("/secrets", func(c *gin.Context) {
// get user, it was set by the BasicAuth middleware
user := c.MustGet(gin.AuthUserKey).(string)
if secret, ok := secrets[user]; ok {
c.JSON(http.StatusOK, gin.H{"user": user, "secret": secret})
} else {
c.JSON(http.StatusOK, gin.H{"user": user, "secret": "NO SECRET :("})
}
})
// Listen and serve on 0.0.0.0:8080
r.Run(":8080")
}
Goroutines inside a middleware
When starting inside a middleware or handler, you SHOULD NOT use the original context inside it, you have to use a read-only copy.
func main() {
r := gin.Default()
r.GET("/long_async", func(c *gin.Context) {
// create copy to be used inside the goroutine
cCp := c.Copy()
go func() {
// simulate a long task with time.Sleep(). 5 seconds
time.Sleep(5 * time.Second)
// note that you are using the copied context "cCp", IMPORTANT
log.Println("Done! in path " + cCp.Request.URL.Path)
}()
})
r.GET("/long_sync", func(c *gin.Context) {
// simulate a long task with time.Sleep(). 5 seconds
time.Sleep(5 * time.Second)
// since we are NOT using a goroutine, we do not have to copy the context
log.Println("Done! in path " + c.Request.URL.Path)
})
// Listen and serve on 0.0.0.0:8080
r.Run(":8080")
}
Custom HTTP configuration
Use http.ListenAndServe()
directly, like this:
func main() {
router := gin.Default()
http.ListenAndServe(":8080", router)
}
or
func main() {
router := gin.Default()
s := &http.Server{
Addr: ":8080",
Handler: router,
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
MaxHeaderBytes: 1 << 20,
}
s.ListenAndServe()
}
Graceful restart or stop
Do you want to graceful restart or stop your web server? There are some ways this can be done.
We can use fvbock/endless to replace the default ListenAndServe
. Refer issue #296 for more details.
router := gin.Default()
router.GET("/", handler)
// [...]
endless.ListenAndServe(":4242", router)
An alternative to endless:
- manners: A polite Go HTTP server that shuts down gracefully.
Contributing
- With issues:
- Use the search tool before opening a new issue.
- Please provide source code and commit sha if you found a bug.
- Review existing issues and provide feedback or react to them.
- With pull requests:
- Open your pull request against develop
- Your pull request should have no more than two commits, if not you should squash them.
- It should pass all tests in the available continuous integrations systems such as TravisCI.
- You should add/modify tests to cover your proposed code changes.
- If your pull request contains a new feature, please document it on the README.
Example
Awesome project lists using Gin web framework.