Form

Content-Type Requested: application/x-www-form-urlencoded

Bind

package main
import "github.com/kataras/iris/v12"
func main() {
app := iris.New()
app.RegisterView(iris.HTML("./templates", ".html"))
app.Get("/", showForm)
app.Post("/", handleForm)
app.Listen(":8080")
}
func showForm(ctx iris.Context) {
ctx.View("form.html")
}
type formExample struct {
Colors []string `form:"colors[]"` // or just "colors".
}
func handleForm(ctx iris.Context) {
var form formExample
err := ctx.ReadForm(&form)
if err != nil {
ctx.StopWithError(iris.StatusBadRequest, err)
return
}
ctx.JSON(iris.Map{"Colors": form.Colors})
}

templates/form.html

<form action="/" method="POST">
<p>Check one or more colors</p>
<label for="red">Red</label>
<!-- name can be "colors" too -->
<input type="checkbox" name="colors[]" value="red" id="red">
<label for="green">Green</label>
<input type="checkbox" name="colors[]" value="green" id="green">
<label for="blue">Blue</label>
<input type="checkbox" name="colors[]" value="blue" id="blue">
<input type="submit">
</form>

Result

{
"Colors": [
"red",
"green",
"blue"
]
}