[wp-trac] [WordPress Trac] #55023: get_header() notice: Theme without header.php is deprecated

[WordPress Trac]

#55023: get_header() notice: Theme without header.php is deprecated
--------------------------+------------------------
 Reporter:  kpdaa         |       Owner:  audrasjb
     Type:  defect (bug)  |      Status:  accepted
 Priority:  normal        |   Milestone:  6.1
Component:  Themes        |     Version:  5.9
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:  multisite
--------------------------+------------------------

Comment (by chandrapatel):

 I was trying loading header and footer parts of block theme on signup page
 using `block_header_area()` and `block_footer_area()` functions but having
 some issues like some CSS was not loading and header and footer parts
 looks broken. Currently, I don't know how CSS loads for block theme. I
 have checked with 2022 theme. Header and footer parts in block theme do
 not render `html`, `head` and `body` tags so I have tried those functions
 in `header.php` and `footer.php` files in `wp-includes/theme-compat/`
 folder for testing.

 Those functions load main `header` and `footer` parts. In block theme,
 user can add custom header and footer parts but since signup page is not
 template, so user can't use custom header/footer parts.

 To give support of block theme's header and footer parts for signup page,

 - If active theme is block theme, then render `html`, `head` and `body`
 tags and header & footer parts from block theme. Maybe add it directly to
 `wp-signup.php` file or create template file in `wp-includes/theme-
 compat/` folder.
 - If active theme is classic theme, then call `get_header()` and
 `get_footer()`.

 I'm not sure whether it's correct approach. I think until block theme
 support for signup page, don't throw deprecation warning if active theme
 is block theme.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/55023#comment:20>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform