Zend_Controller_Router_Route_Regex Optional Parameters with Reverse - zend-framework

Question

I've successfully created my Route using Regex. I have Several Optional Parameters in my route that I don't want displayed in the URL Helper unless the user has specified them. How can I accomplish this?
This is what I currently have
$route = new Zend_Controller_Router_Route_Regex(
'([a-zA-Z-_0-9-]+)-Widgets(?:/page/(\d+))?(?:/limit/(\d+))',
array(
'controller' => 'widget',
'action' => 'list',
),
array(
1 => 'color',
2 => 'page',
3 => 'limit'
),
'%s-Widgets/'
);
$router->addRoute('color_widgets', $route);
I then call the URL Helper with following code
echo $this->url(array('page' => $page), 'color_widgets', false);
This results in /Blue-Widgets/ and does not send the Page to the URL. I can fix this by changing the reverse in the Router
$route = new Zend_Controller_Router_Route_Regex(
'([a-zA-Z-_0-9-]+)-Widgets(?:/page/(\d+))?(?:/limit/(\d+))',
array(
'controller' => 'widget',
'action' => 'list',
'page' => 1
),
array(
1 => 'color',
2 => 'page',
3 => 'limit'
),
'%s-Widgets/page/%d'
);
However this doesn't solve my problem say I have a Url
/Blue-Widgets/page/1/limit/10 The limit doesn't show, again I can fix that with the following
$route = new Zend_Controller_Router_Route_Regex(
'([a-zA-Z-_0-9-]+)-Widgets(?:/page/(\d+))?(?:/limit/(\d+))',
array(
'controller' => 'widget',
'action' => 'list',
'page' => 1,
'limit' => 10
),
array(
1 => 'color',
2 => 'page',
3 => 'limit'
),
'%s-Widgets/page/%d/limit/%d'
);
The problem with this is the user is at
/Blue-Widgets/ and I want to take them to the next page of Blue Widgets with following code
echo $this->url(array('page' => $page), 'color_widgets', false);
They are actually taken to
/Blue-Widgets/page/2/limit/10
When I actually want to take them to
/Blue-Widgets/page/2
How can I accomplish this with the Zend Framework.

Answer 1

It is not possible to use a regex reverse route with a variable number of values.
You could:
Write a different route for every optional parameter (not recommended)
Use a different route structure
You could, for instance change your route to:
$route = new Zend_Controller_Router_Route(
'widgets/:color/*',
array(
'controller' => 'widget',
'action' => 'list',
'page' => 1,
'limit' => 10
),
array(
'color' => '[a-zA-Z-_0-9-]+',
'page' => '\d+',
'limit' => '\d+',
)
);
Another option would be to create your own custom route class, which can parse and build the correct uri.

Answer 2

You've give wrong Regex match variable indexes, that's why you get weird results. Your code should look like this:
$route = new Zend_Controller_Router_Route_Regex(
'([a-zA-Z-_0-9-]+)-Widgets(?:/page/(\d+))?(?:/limit/(\d+))',
array(
'controller' => 'widget',
'action' => 'list',
),
array(
1 => 'color',
3 => 'page',
5 => 'limit'
),
'%s-Widgets/'
);
$router->addRoute('color_widgets', $route);