[wp-trac] [WordPress Trac] #42855: Add ability to filter header, sidebar, searchform, footer and template_part file paths

[WordPress Trac]

#42855: Add ability to filter header, sidebar, searchform, footer and template_part
file paths
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 Reporter:  atanasangelovdev  |       Owner:
     Type:  enhancement       |      Status:  new
 Priority:  normal            |   Milestone:  Awaiting Review
Component:  Themes            |     Version:
 Severity:  normal            |  Resolution:
 Keywords:  has-patch         |     Focuses:  template
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Comment (by MikeSchinkel):

 Replying to [comment:6 joyously]:

 There are many reasons for what @atanasangelovdev is suggesting that your
 replies do not anticipate.  For example:

 1. Support for alternate output based on Google AMP and similar
 technologies.  A plugin could capture the header call, set `ob_start()`,
 run the theme's header, grab its output with `ob_get_clean()`, clean up
 the header to be valid AMP, then output it.  A plugin could do the same
 with the footer and with all partials.

 2. Support for alternate output such as JSON. A plugin could to the same
 above but generate JSON output instead when a URL parameter `?json` is
 added.

 3. Support for testing using similar techniques to above "unit test" a
 header, a footer, or a partial.

 4. Output comments to annotate a theme using similar techniques to above
 for a plugin to specify which header, sidebars and footer were called.

 As the web becomes more complicated, the lack of this type of
 functionality is hamstringing WordPress from being able to be used in
 contexts that are beyond the simple ''"Outputting blog posts for people to
 view via a desktop browser."'' This aspect of WordPress is still in the
 aughts.

 I really wish the people blocking these types of improvements had worked
 on some of these use-cases to appreciate how limiting these missing bits
 of control can be.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42855#comment:7>
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