zf2 segment route catching id on last position - php

Question

I want my url route to have a dynamic part and to end up on the same page not matter if whatever I have in the middle part of my URL.
E.g.:
/en/the-old-category/the-old-name/pid/123123123
/en/the-new-category/now-in-a-sub-category/the-new-name/pid/123123123
Should both get caught by the same controller/action (which will issue the pertinent 301/302 if necessary).
My current router contains:
'router' => [
'routes' => [
'blog' => [
'type' => 'segment',
'options' => [
'route' => "/[:language]",
'constraints' => [
'language' => '[a-z]{2}'
],
'defaults' => [
'controller' => 'Blog\Controller\List',
'action' => 'index',
'language' => 'en'
],
'may_terminate' => true,
'child_routes' => [
'detail' => 'segment',
'options' => [
'route' => '/:path/pid/:postid',
'constraints' => [
'path' => '.+',
'postid' => '\d{1,10}'
],
'defaults' => [
'controller' => 'Blog\Controller\List',
'action' => 'detail'
]
]
]
]
]
]
]
But it's not working.
/ and /en are being caught properly, but subroutes like the ones I proposed earlier, are not.
Am I in the right path to do what I want to do? Should I write a regex route instead?

Answer 1

.+ won't match / because segment routes split the path on / before applying constraints. To make your route work you'll need something like /:path/:foo/pid/:postid. A regex route might also work.

Answer 2

Since between the first and the last part of my URL I need to have a variable number of segments, I can't do this with a segment route, but I was able to manage it with a regex route, configured as follows:
'router' => [
'routes' => [
'blog' => [
'type' => 'regex',
'options' => [
'regex' => "/(?<language>[a-z]{2})?",
'spec' => "/%language%",
'defaults' => [
'controller' => 'Blog\Controller\List',
'action' => 'index'
],
'may_terminate' => true,
],
'child_routes' => [
'detail' => [
'type' => 'regex',
'options' => [
'regex' => '/(?<path>.+)/pid/(?<postid>\d+)$',
'spec' => '/%path%/pid/%postid%',
'defaults' => [
'controller' => 'Blog\Controller\List',
'action' => 'detail'
]
]
]
]
]
]
]