func (form *CommentAdminForm) Valid(v *validation.Validation) {
user := models.User{Id: form.User}
if user.Read() != nil {
v.SetError("User", "admin.not_found_by_id")
}
post := models.Post{Id: form.Post}
if post.Read() != nil {
v.SetError("Post", "admin.not_found_by_id")
}
}
