Question

Is it possible to show flash messages in Symfony 2 without redirect? Or editing core files in another possible solution on google groups?

//Symfony\Component\HttpFoundation\Session 
public function setFlash($name, $value, $persist = true) 
{ 
    if (false === $this->started) { 
        $this->start(); 
    } 
    $this->flashes[$name] = $value; 
    if($persist) { 
        unset($this->oldFlashes[$name]); 
    } 
    else { 
        $this->oldFlashes[$name] = $value; 
    } 
} 

UPDATE

Oh actually I noticed if I just used a forward, flash messages will show, but it will still show on next request

Answer 1

Why using flashes if you don’t want them to be persisted until next request ?

Couldn’t you find other ways to display feedback like template parameters ?

If not, you could add this in your templates (according you are displaying flashes like below):

{% if app.session.hasFlash('notice') %}
<div class="flash-notice">
    {{ app.session.flash('notice') }}
    {{ app.session.removeFlash('notice') }}
</div>
{% endif %}

So that any template that displays these flashes before redirection will remove them from session before returning the response. I think it’s the last better solution.