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Hi everyone, I have this code for the loop, and I need to exclude a category 4 from this loop. Please help :)

Code that starts the loop

             <?php if(have_posts()): ?>

                <ol class="item_lists">

                <?php
                    $end = array(3,6,9,12,15,18,21,24,27,30,33,36,39,42,45);
                    $i = 0;
                    while (have_posts()) : the_post();
                    $i++;
                    global $post;
                ?>
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3 Answers

up vote 5 down vote accepted

you could use wp_parse_args() to merge your arguments into the default query

// Define the default query args
global $wp_query;
$defaults = $wp_query->query_vars;

// Your custom args
$args = array('cat'=>-4);

// merge the default with your custom args
$args = wp_parse_args( $args, $defaults );

// query posts based on merged arguments
query_posts($args);

although, i think the more elegant route is using the pre_get_posts() action. this modifies the query before the query is made so that the query isn't run twice.

check out:

http://codex.wordpress.org/Custom_Queries#Category_Exclusion

based on that example to exclude category 4 from the index i'd put this in your functions.php:

add_action('pre_get_posts', 'wpa_44672' );

function wpa_44672( $wp_query ) {

    //$wp_query is passed by reference.  we don't need to return anything. whatever changes made inside this function will automatically effect the global variable

    $excluded = array(4);  //made it an array in case you  need to exclude more than one

    // only exclude on the home page
    if( is_home() ) {
        set_query_var('category__not_in', $excluded);
        //which is merely the more elegant way to write:
        //$wp_query->set('category__not_in', $excluded);
    }
}
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Adam is right. In addition, for pagination to work, you need to have something more like so:

<?php query_posts('post_type=post&paged='.$paged.'&cat=-4');  ?>
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Before the line

<?php if(have_posts()): ?>

Insert something like this

<?php query_posts($query_string . '&cat=-4'); ?>

This excludes the category with Category ID 4. As seen here

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it does in fact remove the posts from that category but it's a kind of a portfolio on the users page, and now the pagination is broken on page 3. –  jimilesku Mar 6 '12 at 23:50
    
I also have this custom made in the theme_setup.php: $newrules["user/({$author->nicename})/(portfolio)/?$"] = 'index.php?author_name=$matches[1]&baction=$matches[2]'; $newrules["user/({$author->nicename})/(portfolio)/page/?([0-9]+)/?$"] = 'index.php?author_name=$matches[1]&baction=$matches[2]&paged=$matches[3]'; –  jimilesku Mar 6 '12 at 23:51
    
the pagination appears, and I can click it, but the page 2 ahs the same posts as page 1, and page 3 shows 404 error? Pls help :) –  jimilesku Mar 7 '12 at 0:05
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