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update readme: add multipart file binding

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This commit is contained in:
Dmitry Kutakov 2019-06-18 13:42:00 +03:00
parent e8a1e2fc23
commit 1463acc1b1
1 changed files with 21 additions and 17 deletions
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36
README.md
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@ -959,32 +959,36 @@ result:
### Multipart/Urlencoded binding ### Multipart/Urlencoded binding
```go ```go
package main type ProfileForm struct {
Name string `form:"name" binding:"required"`
Avatar *multipart.FileHeader `form:"avatar" binding:"required"`
import ( // or for multiple files
"github.com/gin-gonic/gin" // Avatars []*multipart.FileHeader `form:"avatar" binding:"required"`
)
type LoginForm struct {
User string `form:"user" binding:"required"`
Password string `form:"password" binding:"required"`
} }
func main() { func main() {
router := gin.Default() router := gin.Default()
router.POST("/login", func(c *gin.Context) { router.POST("/profile", func(c *gin.Context) {
// you can bind multipart form with explicit binding declaration: // you can bind multipart form with explicit binding declaration:
// c.ShouldBindWith(&form, binding.Form) // c.ShouldBindWith(&form, binding.Form)
// or you can simply use autobinding with ShouldBind method: // or you can simply use autobinding with ShouldBind method:
var form LoginForm var form ProfileForm
// in this case proper binding will be automatically selected // in this case proper binding will be automatically selected
if c.ShouldBind(&form) == nil { if err := c.ShouldBind(&form); err != nil {
if form.User == "user" && form.Password == "password" { c.String(http.StatusBadRequest, "bad request")
c.JSON(200, gin.H{"status": "you are logged in"}) return
} else {
c.JSON(401, gin.H{"status": "unauthorized"})
} }
err := c.SaveUploadedFile(form.Avatar, form.Avatar.Filename)
if err != nil {
c.String(http.StatusInternalServerError, "unknown error")
return
} }
// db.Save(&form)
c.String(http.StatusOK, "ok")
}) })
router.Run(":8080") router.Run(":8080")
} }
@ -992,7 +996,7 @@ func main() {
Test it with: Test it with:
```sh ```sh
$ curl -v --form user=user --form password=password http://localhost:8080/login $ curl -X POST -v --form name=user --form "avatar=@./avatar.png" http://localhost:8080/profile
``` ```
### XML, JSON, YAML and ProtoBuf rendering ### XML, JSON, YAML and ProtoBuf rendering