Feature: #94662 - Add placeholder for site configuration in foreign_table_where

See Issue #94662

Description

The foreign_table_where setting in TCA allows some old marker-based placeholder to customize the query. The best place to define site-dependent settings is the site configuration, which now can be used within foreign_table_where.

To access a configuration value the following syntax is available:

  • ###SITE:<KEY>### - <KEY> is your setting name from site config e.g. ###SITE:rootPageId###
  • ###SITE:<KEY>.<SUBKEY>### - an array path notation is possible. e.g. ###SITE:mySetting.categoryPid###

Example:

...
'fieldConfiguration' => [
    'foreign_table_where' => ' AND ({#sys_category}.{#uid} = ###SITE:rootPageId### OR {#sys_category}.{#pid} = ###SITE:mySetting.categoryPid###) ORDER BY {#sys_category}.{#title} ASC',
],
...