Nested dynamic routes

[lapis matrix]

In order to create nested dynamic routes within app router, are we still forced to creating a route group first, and then each link being it's own page inside of that?

currently have a project structure where I require the following:

/case-study/{slug} and /case-study/{industry}/{slug}

[ember elk]

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[scenic quartz]

that would be something like

|_app
|____case-study
|_______[industry]
|_________page.tsx
|__________[slug]
|______________page.tsx

If you don't want to generateStaticParams in both page.tsx
You can either do it for both segements from the bottom up https://nextjs.org/docs/app/api-reference/functions/generate-static-params#generate-params-from-the-bottom-up
Or from the top down https://nextjs.org/docs/app/api-reference/functions/generate-static-params#generate-params-from-the-top-down

sorry for the intends it's a bit fucked i did it by hand like a maniac

[lapis matrix]

interesting so I was mostly right then, I opted for currently doing:

|_app
|____case-study
|_______[...slug]
|_________page.tsx

so just replace it from a spread to normal route groups

[scenic quartz]

i mean you can also catch all like you did it with the ...
Hmm you got me thinking why I would got with my approach.
Don't want to say anything wrong i gonna research this

[lapis matrix]

yeah, that's where i'm at, I recall a colleague at one point saying the current solution for app router is route groups, but not sure if there's been a better way by now

[scenic quartz]

in your example
/case-study/{slug} and /case-study/{industry}/{slug}

How do you know that left side {slug} is not a {industry} ?
Let's say case-study/banking
Banking being an industry logically speaking.
Assuming beacuse its just 1 segment?
So case-study/banking/bank-of-england should trigger the right side?

Does that mean that case-study/bank-of-england must exist too though? Are these two {slugs} connected? Is what i am trying to ask

[lapis matrix]

they're not connected directly no, in your example case-study/bank-of-england is just the project/company, and then you'd look up all relevant studies based on banking or finance for example

so the idea would be /case-study/c/{banking} however, doesn't seem like you can do multiple dynamic routes without route groups

[scenic quartz]

Hm yea i tried to come up with something but I can't. Pretty sure you are right. I would not even have thought of route groups for this as a solution.
I came here with the intention to help but today sir you helped my understanding

[lapis matrix]

glad I was able to help as well 🙂 I don't particularly like the routing system app router provides, but I do like a few of the things it solves

[scenic quartz]

Lets see if one of the veterans joins this thread and might have something we both didnt think of

[lapis matrix]

I ended up finding a solution that works 🙂

[scenic quartz]

interesting what does the t\ do