404 page for each module

If route does not exist, router can't handle request and then overwrites with notFound parameters. Dispatcher does not know which module must be loaded. Try to use dispacher EventManager

This is my router

<?php

/*============================= API ====================================*/
$router->add("/api", array(
    'module' => 'api'
))->setName('api');

$apiRoutes = [
    '/' => 'Index',
    '/users' => 'Users'
];

foreach($apiRoutes as $route => $className){
    $router->addModuleResource('api', 'MyPackage\API\Controllers\\' . $className, '/api' . $route);
}

/*============================= Pub ====================================*/
$router->add('/confirm/{code}/{email}', array(
    'controller' => 'user_control',
    'action' => 'confirmEmail'
));

$router->add('/signup', array(
    'controller' => 'session',
    'action' => 'signup'
))->setName('signup');

$router->add('/reset-password/{code}/{email}', array(
    'controller' => 'user_control',
    'action' => 'resetPassword'
));

/*============================= Admin ====================================*/
$router->add("/admin", array(
    'module' => 'admin'
));

$router->add(
    "/admin/:controller",
    array(
        'module' => 'admin',
        "controller" => 1
    )
);
$router->add(
    "/admin/:controller/:action/",
    array(
        'module' => 'admin',
        "controller" => 1,
        "action"     => 2
    )
);
$router->add(
    "/admin/:controller/:action/:params",
    array(
        'module' => 'admin',
        "controller" => 1,
        "action"     => 2,
        "params"     => 3,
    )
);

In every module I have

$di['dispatcher'] = function() {
            $eventsManager = new \Phalcon\Events\Manager();
            $eventsManager->attach("dispatch:beforeException", function($event, $dispatcher, $exception) {
                //Handle 404 exceptions
                if ($exception instanceof \Phalcon\Mvc\Dispatcher\Exception) {
                    $dispatcher->forward(array(
                        'controller' => 'index',
                        'action' => 'show404'
                    ));
                    return false;
                }
                ...

This works for Pub and Admin module. Is any way for doing this in API module? It is critical issue for me

Maybe it's workaround, but... :)

$router = new \Phalcon\Mvc\Router(false);

$eventManager = new \Phalcon\Events\Manager();
$eventManager->attach('router:beforeCheckRoutes', function($event, \Phalcon\Mvc\Router $router) {

    switch(true) {
        case (strpos($router->getRewriteUri(), '/api', 0) === 0):
            $router->notFound(
                array(
                    'module'     => 'api',
                    'controller' => 'index',
                    'action'     => 'show404'
                )
            );
            break;
    }
});

Create a router or router annotation object with false parameter

Thank you for a tip, I solved my issue. I now it's not really right way, but it just works. I added another method showApi404 in Pub module, b/c I can't forward request between modules (Pub module dispatcher still handle 404 exceptions). It might be http redirect, but I don't want this

$di['dispatcher'] = function() {
            $eventsManager = new \Phalcon\Events\Manager();
            $eventsManager->attach("dispatch:beforeException", function($event, $dispatcher, $exception) {

                // Handle api 404
                $router = $dispatcher->getDi()->get('router');
                if (strpos($router->getRewriteUri(), '/api/', 0) === 0){
                    $dispatcher->forward(array(
                        'controller' => 'index',
                        'action' => 'showApi404'
                    ));
                    return false;
                }
                ...