// A signed cookie (and thus limited to 4kb in size).
// Restriction: Keys may not have a colon in them.
type Session map[string]string

// Flash represents a cookie that gets overwritten on each request.
// It allows data to be stored across one page at a time.
// This is commonly used to implement success or error messages.
// e.g. the Post/Redirect/Get pattern: http://en.wikipedia.org/wiki/Post/Redirect/Get
type Flash struct {
    Data, Out map[string]string
}

// Show the Settings form
func (c App) ShowSettings() rev.Result {
    return c.Render()
}

// Process a post
func (c App) SaveSettings(setting string) rev.Result {
    c.Validation.Required(setting)
    if c.Validation.HasErrors() {
        c.Flash.Error("Settings invalid!")
        c.Validation.Keep()
        c.Params.Flash()
        return c.Redirect(App.ShowSettings)
    }

    saveSetting(setting)
    c.Flash.Success("Settings saved!")
    return c.Redirect(App.ShowSettings)
}