How to set up routeEnhancers for a simple GET parameter? - typo3

Question

I'm trying to create a routeEnhancer for a simple GET parameter:
/?pageNumber=1&cHash=...
This parameter (including the cHash) is generated by the page browser of a multi-page sitemap (pure TypoScript), which can be simulated with the following simplified TypoScript:
page.10 = COA
page.10{
10 = LOAD_REGISTER
10{
pageNumber.cObject = TEXT
pageNumber.cObject.value = 0
pageNumber.cObject.override.data= GP:pageNumber
pageNumber.cObject.wrap = (|+1)
pageNumber.prioriCalc = intval
}
20 = TEXT
20{
data = register:pageNumber
typolink {
parameter.data = TSFE:id
additionalParams.data = register:pageNumber
additionalParams.wrap = &pageNumber=|
}
}
}
Result (without routeEnhancers):
On page 0 (the root page "/"): 1
On page 1: 2
On page 2: 3
And so on. That works as expected, but I'd like to have nicer URLs.
My routeEnhancers attempt for rewriting the URLs:
routeEnhancers:
PageBrowser:
type: Simple
routePath: '/page/{page_number}'
requirements:
page_number: '[0-9]'
_arguments:
page_number: 'pageNumber'
Result with this routeEnhancer:
On page 0: 1
On page 1 the link unfortunately remains unchanged: 1
It seems that the encoding works, but the decoding fails.
What am I doing wrong?

Answer 1

It looks there is some confusion with page_number and pageNumber:
I think this setup does, what you are looking for. (I had to manually delete cache too)
page = PAGE
page.10 = COA
page.10{
10 = LOAD_REGISTER
10{
pageNumber.cObject = TEXT
pageNumber.cObject.value = 0
pageNumber.cObject.override.data= GP:pageNumber
pageNumber.cObject.wrap = (|+1)
pageNumber.prioriCalc = intval
}
20 = TEXT
20{
data = register:pageNumber
typolink {
parameter.data = TSFE:id
additionalParams.data = register:pageNumber
additionalParams.wrap = &pageNumber=|
}
}
}
routeEnhancers:
PageBrowser:
type: Simple
routePath: '/page/{pageNumber}'
requirements:
pageNumber: '[0-9]+'