TYPO3 Core

Just found out that accessing that same constant via the site configuration is a working workaround:

[traverse(site("configuration"), "settings/foo") == "bar"]

tl;dr:

broken:

[{$foo} == 'bar']

working:

['{$foo}' == 'bar']

Long story: I played around on this in v12 again:

• Create a root page
• Have a site settings.yaml parallel to config.yaml is the site config folder of that new site, with this content:
  

  foo: bar
  

• Create a root TS template on the page with this setup content:
  

  page = PAGE
  page.10 = TEXT
  page.10.value = HELLO WORLD!
  page.20 = TEXT
  
  ['{$foo}' == 'bar']
  page.20.value = the site constant "foo" is "bar" 
  [else]
  page.20.value = the site constant "foo" is NOT "bar" 
  [global]
  

• Go to TypoScript BE module "Included TypoScript".
• Look at the "Constants" "Configuration" tree and see there is a node "Site constants settings of site "..."". Clicking the {} button should show you the 'constant' foo being set to bar -> the site setting is turned into a constant.
• See the condition being listed in the "condition" section, with its value being updated to bar. See screenshot, too.
• Call FE and see condition kicks in.
• Change the constant value in settings.yaml from 'bar' to 'baz', and see the condition no longer kicks in in FE and [else] branch is rendered.

Your example above uses

[{$foo} == 'bar']

['{$foo}' == 'bar']

-> Using site settings as constants in conditions does work, imho. Could you recheck, please?

Using site settings as constants in conditions does work, imho. Could you recheck, please?

Yes, your workaround (wrapping the constant in quotes) does work in setup conditions, but not in constant conditions. The latter is probably due to the fact that constants are not being resolved recursively anymore, right?

My workaround is working in both setup and constant conditions:

[traverse(site("configuration"), "settings/foo") == "bar"]

Patch set 1 for branch 12.4 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/84460