..  _important-program-page-reads-the-page-record-from-page:

=======================================================
Important: Program page reads the page record from page
=======================================================

Description
===========

The data processor :typoscript:`program-data` builds the program of a program
page from the page record. It took that record from the variable
:html:`{data}` first, the one a :typoscript:`FLUIDTEMPLATE` page object
assigns, and from the page information object :html:`{page}` of a
:typoscript:`PAGEVIEW` page object only when :html:`{data}` was empty.

:typoscript:`PAGEVIEW`, which TYPO3 v13 offers, reserves :html:`{page}` but not
:html:`{data}`, so a :typoscript:`PAGEVIEW` site package may assign a
:html:`{data}` of its own. A text there failed every program page with a
type error, and the records of a query were read as if they were the page
record.

The processor now takes the record from :html:`{page}` when it is the page
information object, and from :html:`{data}` otherwise. A value that is not
a non-empty array adds no program.

Impact
======

*   A :typoscript:`PAGEVIEW` site package that assigns a variable
    :html:`{data}` of its own, a text or the records of a query for
    example, no longer breaks program pages on TYPO3 v13.
*   A :typoscript:`PAGEVIEW` site package that assigned another page record as
    :html:`{data}` on purpose now gets the program of the page it renders.
*   A :typoscript:`FLUIDTEMPLATE` page object on TYPO3 v12 or v13 is not
    affected, also when its site package assigns a variable :html:`{page}` of
    its own.

Affected Installations
======================

Installations on TYPO3 v13 with a :typoscript:`PAGEVIEW` page object that
assigns a variable :html:`{data}` on program pages.

..  index:: TypoScript, Frontend, ext:academic_programs