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Exclude a category from the loop

  • Sorry, this is a follow up to an earlier related post, but I want to exclude a category from the loop. I’ve seen related posts and know what I have to do (I just don’t know the exact syntax, but basically I know I need to add this:

    <?php query_posts(cat=’-4′); ?>

    to this:

    <?php
    		$page = (get_query_var('paged')) ? get_query_var('paged') : 1;
    		query_posts("showposts=4&paged=$page");
    		?>
    
    		<?php while ( have_posts() ) : the_post(); ?>
    
    		<?php get_template_part('content','archive'); ?>
    
    		<?php endwhile; ?>

    …except I don’t know exactly, precisely, how to phrase the code. If you could show me exactly how to include it that would be great, but (even better) recommend a GREAT SOURCE for learning to write WP’s propietary .php code.

    Thank you,

    John

Viewing 15 replies - 1 through 15 (of 36 total)
  • You can add this in your functions.php file

    add_action('pre_get_posts', 'cat_to_exclude' );
    
    function 'cat_to_exclude( $wp_query ) {
    
        $excluding = array(4);  
    
               set_query_var('category__not_in', $excluding);
    
    }

    I havnt tested it but you can try this as well
    in your loop
    showposts=4&paged=$page&cid=-4

    add a minus(-) sign

    for further read you can follow this codex
    http://codex.wordpress.org/Custom_Queries#Category_Exclusion

    Hmmm, I tried both methods, got a bad result. :

    unexpected T_CONSTANT_ENCAPSED_STRING…

    I don’t know what I did, but I sure screwed up something. The whole site is down. It says the error is on line 108 in functions.php, which I never touched:

    function dynamictitles() {

    if ( is_single() ) { *********THIS IS LINE 108
    wp_title(”);
    echo (‘ | ‘);
    bloginfo(‘name’);

    ???

    How could you of tried both methods if you didn’t touch the functions.php file?

    If you have a copy of a clean functions.php file for your theme,(child ?) perhaps, now would be a good time to upload it to your theme folder.

    If you have made other changes to it, I hope you kept a hard copy to reupload.

    No, I went into the function.php file and tried the method that cinghaman suggested above. It didn’t remove the category, so I went back to functions.php and deleted that code. That’s when everything went amuck. Strange thing is, I wasn’t anywhere near where the error is being reported (I added the code at line 78, didn’t touch anything near line 108). I have a clean local copy at work I’ll try tomorrow.

    just saw the code there was extra character in the function

    add_action('pre_get_posts', 'cat_to_exclude' );
    
    function cat_to_exclude( $wp_query ) {
    
        $excluding = array(4);  
    
               set_query_var('category__not_in', $excluding);
    
    }

    Create a child folder for your theme
    create a new functions file add the code

    Works fine for me tested on my own blog

    Thanks cinghaman, got everything straightened out, and yes corrected code for the functions file works fine, but it eliminates the post on the home page too (category “home-page”, id=4). On the home page, the text under the photo is a post (id=4). I wanted to eliminate that post category from the latest “recent blog posts” in the upper left. I successfully did that, but then realized the post was still showing up on the blog (which I also don’t want). The functions.php method you suggested above works fine, but eliminates the post from the home page too.

    for that you can create a if statement and wrap the function inside

    if(!is_home()) {
    
    }

    Thanks, but again, I don’t know the exact syntax… can you put it together for me?

    try this

    function cat_to_exclude($wp_query) {
      if ( !is_home() ) {
        $wp_query->set('category__not_in', '52');
      }
      return $query;
    }
    add_filter('pre_get_posts', 'cat_to_exclude');

    Nope, that completely wigged out my site again.

    52 has to be replaced with your 4 (that was i testing on my blog)

Viewing 15 replies - 1 through 15 (of 36 total)
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