Zend Framework; check if a controller exists or not

Question

I searched on Google, and I got this code to check if a controller exists or not. ``` $front = Zend_Controller_Front::getInstance(); if ($front->getDispatcher()->isDispatchable($request)) { // Controller exists } ``` But I don't know where I should put this code. What is `$request`? I'm in Boostrap.php. I have `_initRoute`, I need to check if a controller doesn't exist, if it doesn't then I will add a new route. Updated after first answer. I have some routes in Boostrap.php ``` public function _initRoute() { $front = Zend_Controller_Front::getInstance(); $router = $front->getRouter(); $router->addRoute( 'username', new Zend_Controller_Router_Route(':username', array('controller'=>'profile', 'action'=>'index') ) ); $router->addRoute( 'username/sets', new Zend_Controller_Router_Route(':username/sets', array('controller'=>'profile', 'action'=>'sets') ) ); } ``` This Routes, will make mydomain.com/{username} show content same as mydomain.com/profile/index/username/{username} But the probl…

Accepted Answer

You should put that code in a Controller Plugin since the request object does not yet exist at bootstrap time.

The `$request` variable in question is an object of `Zend_Controller_Request_Http`. This object is initially created when the front controller goes to dispatch a request.

You could register a `routeStartup` plugin and place the code there. That would be the earliest point at which you can use the Request object. All controller plugin chains will pass the request object to your plugin except for `dispatchLoopShutdown()`.

Here is sample plugin code:

```
class Application_Plugin_Example
{
    public function routeStartup(Zend_Controller_Request_Abstract $request)
    {
        $front = Zend_Controller_Front::getInstance();
        if ($front->getDispatcher()->isDispatchable($request)) {
            // Controller exists
        }
    }
}
```

If you are trying to just handle 404 errors, this is what the ErrorHandler plugin can be used for this purpose.

Zend Framework; check if a controller exists or not

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