// GetFlashes retieves all flash messages found in a cookie session associated with ctx..
//
// name is the session name which is used to store the flash messages. The flash
// messages can be stored in any session, but it is a good idea to separate
// session for flash messages from other sessions.
//
// key is the key that is used to identiry which flash messages are of interest.
func GetFlashes(ctx *base.Context, name, key string) (Flashes, error) {
ss, err := ctx.GetSession(name)
if err != nil {
return nil, err
}
if v, ok := ss.Values[key]; ok {
delete(ss.Values, key)
serr := ss.Save(ctx.Request(), ctx.Response())
if serr != nil {
return nil, serr
}
return v.(Flashes), nil
}
return nil, errors.New("no flashes found")
}
// Save saves flash messages to context
func (f *Flasher) Save(ctx *base.Context, name, key string) error {
ss, err := ctx.GetSession(name)
if err != nil {
return err
}
var flashes Flashes
if v, ok := ss.Values[key]; ok {
flashes = v.(Flashes)
}
ss.Values[key] = append(flashes, f.f...)
err = ss.Save(ctx.Request(), ctx.Response())
if err != nil {
return err
}
return nil
}