[TYPO3-dev] typoscript rendering: setting cookie and reading during runtime not working?

[Stephan Schuler]

Hey Simon.

You are mixing different (and very distinct) phases of typo script parsing.

The first thing: I didn't know if "globalVar _COOKIE" is supposed to work at all. Didn't try it, ever. Nice to see that it works :).

Second thing: You cannot write a cookie by typo script rendering and read it by condition in the same click. At least not by pure typo script object calls.

Typo script parsing basically looks like this:
1: Determine page id.
2: Fetch all typo script records for the page id, and fetch linked typo script records as well as files recursively.
3: Concatenate all records and files to one single string.
4: All conditions are parsed, which means not matching parts are skipped out. That's the part where your condition matches.
5: Now the remaining long typo script string is parsed as a whole, being transferred to from string to array structure
6: Here comes the execution of the array, which is the first part that touches your userFunc to set the cookie.

I only mentioned logical steps of typo script parsing. There might be steps that are bound to each other or called inside another since it's an easy improvement.
But as you can see, the condition stuff is done long before the execution is performed.

Third thing: Like Nicolas said, you should not use client side storages such as cookies to determine a single rendering path.
If you want to make different rendering steps (plugins, usually) work together, you could simply use a singleton object inside your PHP logic. You even don't need to put this into a cookie or session. If you simply want to make a single plugin store data that is fetched by another plugin later: A class extending t3lib_Singleton is just fine. Drop your data there and fetch it later. This object is destroyed when the TYPO3 process ends.
If you want to let a plugin decide which overall output schema to use(say, one column for shoping basket, two columns with right-side adds for checkout-confirmation with the ability for editors to change this content by default content backend): Don't do it. Use different plugins on different pages. That's much more stable and much less confusing. Think about later debugging in case of some bugs. You don't want to have complexity here.

Fourth thing: If you really want to make your typo script read and write a cookie within a single rendering cycle, there I currently see two different ways.
1: Use different userFuncs for that. This doesn't interact with condition, but it might work with the typo script "if" clause.
   http://typo3.org/documentation/document-library/core-documentation/doc_core_tsref/4.7.0/view/1/5/#id553579

2: Use a user defined condition which always returns "TRUE" but internally checks your cookie and writes it if necessary.
   http://typo3.org/documentation/document-library/core-documentation/doc_core_tsref/4.7.0/view/1/4/#id790103


Regards,
Stephan.


Stephan Schuler
Web-Entwickler

Telefon: +49 (911) 539909 - 0
E-Mail: Stephan.Schuler at netlogix.de
Website: media.netlogix.de


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-----Ursprüngliche Nachricht-----
Von: typo3-dev-bounces at lists.typo3.org [mailto:typo3-dev-bounces at lists.typo3.org] Im Auftrag von Simon Schaufelberger (Schaufi)
Gesendet: Mittwoch, 2. Januar 2013 02:05
An: typo3-dev at lists.typo3.org
Betreff: [TYPO3-dev] typoscript rendering: setting cookie and reading during runtime not working?

happy and blessed new year! this is the first post in the new year ;)

i thought i have some understanding about typoscript rendering but now i am really stuck.

what i want is: set a cooki e at typoscript runtime and read it later in a condition and render a different page output if its there.

Problem: the condition is only true after reloading the page.

Why is this code not doing what i want?

in the userfunction i just call setCookie...

page = PAGE

[globalVar = _COOKIE|myCookie =]
includeLibs.setCookie = fileadmin/setCookie.php page {
        1 = USER
        1 {
                userFunc = user_setCookie
        }
}
[end]

[globalVar = _COOKIE|myCookie = 1]
page {
        2 = TEXT
        2.value = cookie is there
}
[end]
--
Regards, Schaufi
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 call setCookie...

page = PAGE

[globalVar = _COOKIE|myCookie =]
includeLibs.setCookie = fileadmin/setCookie.php page {
        1 = USER
        1 {
                userFunc = user_setCookie
        }
}
[end]

[globalVar = _COOKIE|myCookie = 1]
page {