Pass a variable to the Layout

[clear pilot]

This might be an anti pattern but I'd like to pass a variable to my layout. I'd like to be able to set on each page.tsx a variable of backUrl or somesort, as in my layout I want to put a Back button for any page that has this variable

Can anyone make a suggestion to solve this problem please?

[cursive canopy]

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[hushed swift]

if you want a layout that's different for each page, then I think what you want is a template, because a layout is supposed to be rendered once

or instead of deoptimizing the entire layout, make the back link component a client component that reads the current segment and shows a correct back link

[clear pilot]

Thanks for your response, if I was to use a template instead is there any way to get a value from the page to the template? For instance if I had /libraries/1/books/1/edit, and I wanted to add a Back button to take someone back to /libraries/1/books, how would I do that? It looks like the segment value only returns libraries for me