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add some MVC error handle examples

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This commit is contained in:
Gerasimos (Makis) Maropoulos
2020-08-18 23:14:11 +03:00
parent 35ab1de212
commit 4228dd8ea4
14 changed files with 324 additions and 3 deletions
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75
_examples/mvc/error-handler-custom-result/main.go Normal file
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package main
import (
"github.com/kataras/iris/v12"
"github.com/kataras/iris/v12/mvc"
)
func main() {
app := iris.New()
app.RegisterView(iris.HTML("./views", ".html"))
m := mvc.New(app)
m.Handle(new(controller))
app.Listen(":8080")
}
type errorResponse struct {
Code int
Message string
}
/*
// Note: if a struct implements the standard go error, so it's an error
// and its Error() is not empty, then its text will be rendered instead,
// override any Dispatch method.
func (e errorResponse) Error() string {
return e.Message
}
*/
// implements mvc.Result.
func (e errorResponse) Dispatch(ctx iris.Context) {
// If u want to use mvc.Result on any method without an output return value
// go for it:
//
view := mvc.View{Code: e.Code, Data: e} // use Code and Message as the template data.
switch e.Code {
case iris.StatusNotFound:
view.Name = "404"
default:
view.Name = "500"
}
view.Dispatch(ctx)
// Otherwise use ctx methods:
//
// ctx.StatusCode(e.Code)
// switch e.Code {
// case iris.StatusNotFound:
// // use Code and Message as the template data.
// ctx.View("404.html", e)
// default:
// ctx.View("500.html", e)
// }
}
type controller struct{}
type user struct {
ID uint64 `json:"id"`
}
func (c *controller) GetBy(userid uint64) mvc.Result {
if userid != 1 {
return errorResponse{
Code: iris.StatusNotFound,
Message: "User Not Found",
}
}
return mvc.Response{
Object: user{ID: userid},
}
}

12
_examples/mvc/error-handler-custom-result/views/404.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Client Error Page</title>
</head>
<body>
<h2>{{.Code}}</h2>
<h3>{{.Message}}</h3>
</body>
</html>

12
_examples/mvc/error-handler-custom-result/views/500.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Server Error Page</title>
</head>
<body>
<h2>{{.Code}}</h2>
<h3>{{.Message}}</h3>
</body>
</html>