func UserGateKeeper() (gk *govalidations.GateKeeper) {
gk = govalidations.NewGateKeeper()
gk.Add(govalidations.Regexp(func(object interface{}) interface{} {
return object.(*User).Email
}, regexp.MustCompile(`^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$`), "Email", "Must be a valid email"))
gk.Add(govalidations.Presence(func(object interface{}) interface{} {
return object.(*User).Username
}, "Username", "Username can not be blank"))
gk.Add(govalidations.Limitation(func(object interface{}) interface{} {
return object.(*User).Username
}, 0, 10, "Username", "Username can not be too long"))
gk.Add(govalidations.Prohibition(func(object interface{}) interface{} {
return object.(*User).Username
}, 10, 20, "Username", "Username must less than 10 or more than 20"))
gk.Add(govalidations.AvoidScriptTag(func(object interface{}) interface{} {
return object.(*User).Username
}, "Username", "Username can contains html script tag"))
gk.Add(govalidations.Custom(func(object interface{}) bool {
age := object.(*User).Age
if age < 18 {
return false
}
return true
}, "Age", "You must be a grown man"))
return
}
func MessageSwitcherGateKeeper() (gk *govalidations.GateKeeper) {
gk = govalidations.NewGateKeeper()
gk.Add(govalidations.MessageSwitcher(func(object interface{}) string {
name := object.(*User).Username
if name == "Kioshi" {
return BlackListMessage
}
if name == "Roku" {
return WhiteListMessage
}
return ""
}, "Username"))
return
}