At WordCamp Sofia 2013

1. Templating WordPress
Konstantin Kovshenin
Automattic

4. author-$nicename.php
author-$id.php
author.php
archive.php
paged.php
index.php

5. $templates = array(
'foo.php',
'bar.php',
'baz.php',
);
$template = locate_template( $templates );

6. function get_sidebar( $name = null ) {
$templates = array();
if ( '' !== $name )
$templates[] = "sidebar-{$name}.php";
$templates[] = 'sidebar.php';
}
locate_template( $templates, true );

7. get_sidebar( 'left' );
// sidebar-left.php
// sidebar.php

8. get_header( 'foo' );
// header-foo.php
// header.php
get_footer( 'bar' );
// footer-bar.php
// footer.php

9. get_template_part( 'foo', 'bar' );
// foo-bar.php
// foo.php

10. get_template_part( 'content',
get_post_format() );
//
//
//
//
//
content-gallery.php
content-quote.php
content-image.php
...
content.php

11. template-loader.php

12. if
( is_404()
&& $template = get_404_template()
) :
elseif ( is_tag()
&& $template = get_tag_template()
) :
elseif ( is_date()
&& $template = get_date_template()
) :
elseif ( is_category() && $template = get_category_template() ) :
elseif ( is_author()
elseif ( is_archive()
elseif ( is_paged()
else :
&& $template = get_author_template()
&& $template = get_archive_template()
&& $template = get_paged_template()
) :
) :
) :
$template = get_index_template();
endif;
if ( $template = apply_filters( 'template_include', $template ) )
include( $template );

13. if
( is_404()
&& $template = get_404_template()
) :
elseif ( is_tag()
&& $template = get_tag_template()
) :
elseif ( is_date()
&& $template = get_date_template()
) :
&& $template = get_paged_template()
) :
elseif ( is_category() && $template = get_category_template() ) :
elseif ( is_author()
elseif ( is_archive()
elseif ( is_paged()
else :
&& $template = get_author_template()
&& $template = get_archive_template()
) :
) :
$template = get_index_template();
endif;
if ( $template = apply_filters( 'template_include', $template ) )
include( $template );

14. if
( is_404()
&& $template = get_404_template()
) :
elseif ( is_tag()
&& $template = get_tag_template()
) :
elseif ( is_date()
&& $template = get_date_template()
) :
elseif ( is_category() && $template = get_category_template() ) :
elseif ( is_author()
elseif ( is_archive()
elseif ( is_paged()
else :
&& $template = get_author_template()
&& $template = get_archive_template()
&& $template = get_paged_template()
) :
) :
) :
$template = get_index_template();
endif;
if ( $template = apply_filters( 'template_include', $template ) )
include( $template );

15. if
( is_404()
&& $template = get_404_template()
) :
elseif ( is_tag()
&& $template = get_tag_template()
) :
elseif ( is_date()
&& $template = get_date_template()
) :
elseif ( is_category() && $template = get_category_template() ) :
elseif ( is_author()
elseif ( is_archive()
elseif ( is_paged()
else :
&& $template = get_author_template()
&& $template = get_archive_template()
&& $template = get_paged_template()
) :
) :
) :
$template = get_index_template();
endif;
if ( $template = apply_filters( 'template_include', $template ) )
include( $template );

16. // get_author_template()
$templates[] = "author-{$author->nicename}.php";
$templates[] = "author-{$author->ID}.php";
$templates[] = 'author.php';
$template = locate_template( $templates );

17. if
( is_404()
&& $template = get_404_template()
) :
elseif ( is_tag()
&& $template = get_tag_template()
) :
elseif ( is_date()
&& $template = get_date_template()
) :
elseif ( is_category() && $template = get_category_template() ) :
elseif ( is_author()
elseif ( is_archive()
elseif ( is_paged()
else :
&& $template = get_author_template()
&& $template = get_archive_template()
&& $template = get_paged_template()
) :
) :
) :
$template = get_index_template();
endif;
if ( $template = apply_filters( 'template_include', $template ) )
include( $template );

18. if ( $template = apply_filters(
'template_include', $template ) )
include( $template );

19. function my_template_include( $template ) {
if ( my_is_maintenance() &&
$located = locate_template( 'maintenance.php' ) )
$template = $located;
return $template;
}
add_filter( 'template_include', 'my_template_include' );

20. locate_template( array(
'foo.php', 'bar.php', 'baz.php' ) );
//
//
//
//
//
//
child/foo.php
parent/foo.php
child/bar.php
parent/bar.php
child/baz.php
parent/baz.php

21. locate_template( 'related-posts.php', true );
// child/related-posts.php
// parent/related-posts.php
// vs: require get_template_directory() .
'related-posts.php';

22. wp-includes/template-loader.php
wp-includes/general-template.php
wp-includes/template.php

23. kovshenin.com/wcsof2013