You cannot use category slug as its the default slug for WordPress category. Try register your taxonomy with some other taxonomy name like product-category and use taxonomy-product-category.php file to render individual taxonomy category layout(main1, main2 etc.) Function Reference/register taxonomy.
This should help get you started: As mentioned in the Template Hierarchy page, you can create a template for a specific page. To create a template for one specific page, copy your existing page.php file and rename it with your page’s slug or ID: page-{slug}.php page-{ID}.php For example: Your About page has a slug of … Read more
Your code is trying to use if statements to control which if statements are being used, etc, which is meta programming. It will not work, and it can never work. <?php if ( is_tag() ) { if ( have_posts() ) { while ( have_posts() ) { the_post(); } else { $paged = ( get_query_var(‘paged’) ) … Read more
Where to put custom page templates in theme? Custom page templates in page-templates folder are automatically recognized by WordPress.This folder is recommended for global or multi-purpose page-templates. You can check more organizing theme files on theme development handbook. but it does not work with my theme? Are you sure you have template files with the … Read more
Adding pre_get_posts is too late if subscribed in a page template and your template is empty so that’s the reason nothing it showing. Move your pre_get_posts out to your functions.php so it has a chance to run. Also consider using template_include and specifying using book template another way that you can check for in that … Read more
I faced a similar problem, answer is linked below, and it turns out Template Filters do the trick! https://wordpress.stackexchange.com/a/252459/110886
I ended up getting this working and it was much easier than I expected thanks to the comments by @LWS-Mo and @Milo. In my page I add a custom field with name=add_class and key=extra-wide. I then use code snippets plugin (I didn’t want it in the theme’s function.php since I toggle between the main theme … Read more
“Can be avoided this “… can’t be found”?” To answer your question in one line: YES “Is this a normal behavior?” That’s because there’s no template file setup to display at that segment of the URL structure. By default, there’s no template for domain.com/category/ however, there is a template for domain.com/category/category-name/. WordPress refers to: domain.com/category/category-name/ … Read more
To understand how this works, take a look at the source file template-loader.php. Here you see several lines of statements which determine which template WordPress will load. Near the end is the filter, which allows you to undo all the previous lines. For instance, one of the lines determines which template to load if is_single … Read more
In general, “bad practice” is so common in the wordpress ecosystem, you will have to do something really bad for anyone to actually signal you out for doing it 😉 If you are the developer and maintainer of the theme, you should develop it in a way which will be easy for you to maintain … Read more