You can use <?php get_template_part( $slug, $name ); ?> http://codex.wordpress.org/Function_Reference/get_template_part or a PHP include <?php include(“file.php”); ?>
It’s not a hack, this is what databases are designed for- querying large quantities of data. If you’re concerned about load, you should employ caching on data that doesn’t change frequently. That said, you should not be using query_posts to create additional queries. Really, you shouldn’t be using query_posts at all. Create additional queries via … Read more
You have three loops, two nested inside the main loop. The main loop display the posts e.g. in category_a. What does the second nested loop display? It seems this loops also display the posts from the samne category as the main loop. So try to remove the second nested loop.
All you need to do is just create a new file in your theme root directory. This file must start with following code: <?php /** * Template Name: No Sidebars */ Name your file, for example, page_nosidebars.php and then WP will add No Sidebars template to available templates list. There is nice article about it … Read more
By default page post type doesn’t support category taxonomy. But you can easily fix it by register category taxonomy for page post type: add_action( ‘init’, ‘wpse8170_init’ ); function wpse8170_init() { register_taxonomy_for_object_type( ‘category’, ‘page’ ); } Now you will see categories meta box in the same place as you see it at post creation page. To … Read more
Indeed, it is as toscho has said. index.php and style.css are the bare minumum. Developers like to separate things, though, so instead of having one index.php file to rule all, you’ll find parts like: header.php footer.php sidebar.php index.php style.css functions.php and additional templates like ones you mentioned in the question. This page will show you … Read more
Take a look at the Codex: taxonomy-{taxonomy}-{term}.php – If the taxonomy were sometax, and taxonomy’s term were someterm WordPress would look for taxonomy-sometax-someterm.php. In the case of Post Formats, the taxonomy is ‘post_format’ and the terms are post-format-{format}. i.e. taxonomy-post_format-post-format-link.php taxonomy-{taxonomy}.php – If the taxonomy were sometax, WordPress would look for taxonomy-sometax.php taxonomy.php You registered … Read more
Yes, this is the intended behaviour: page-{slug}.php – If the page slug is recent-news, WordPress will look to use page-recent-news.php So, simply use a different filename for your templates, like template-contact.php for example. You can find more info about this here: https://codex.wordpress.org/Template_Hierarchy
Efficiency can mean a lot of different things, do you mean efficient to you as a dev (least lines of code?) or efficient to the user (loading the quickest etc). In any case, template_include fires AFTER WordPress has determined what template it should load, but before it loads it, so WP has already done the … Read more
This is very straightforward, at least from development point of view. You need to create Page Template for the page. Main Loop will take care of page itself. Follow it by adding secondary loop with arguments for set of posts you need.