Ndtyjky

In WordPress I have a right menu with the code:

 <?php wp_list_categories( array(

    'orderby'    => 'name',

    'show_count' => false,

    'exclude'    => array( 1,2,3,4 )

) ); ?> 

and the query to show posts:

    <?php

       // the query

      $wpb_all_query = new WP_Query(array('post_type'=>'documentos', 'order' => 'ASC', 'post_status'=>'publish'));

    ?>



  <?php if ( $wpb_all_query->have_posts() ) : ?>    

    <h4 class="titDocCat" ><?php single_cat_title(); ?></h4>

                  <ul class="doc"> 



                    <!-- the loop -->

                    <?php while ( $wpb_all_query->have_posts() ) : $wpb_all_query->the_post(); ?>





                    <li class="gobierno">

                        <div class="kc_col-sm-9 kc_column kc_col-sm-9 noPad">

                     <h3 class="titleDoc"><?php the_field('titular_del_documento'); ?></h3>

                        <p class="smallDoc"><?php the_field('descripcion_del_documento'); ?></p>

                        </div>



                        <div class="kc_col-sm-3 kc_column kc_col-sm-3 noPad">

                        <a class="btnDownload" href="<?php the_field('archivo'); ?>" download><?php _e( 'Descarga PDF', 'modrox' ); ?></a>

                        </div>



                      </li>

                      <div class="sepGob"></div>

                    <?php endwhile; ?>

                    <!-- end of the loop -->

</ul>



                    <?php wp_reset_postdata(); ?>



                    <?php else : ?>

                    <p><?php _e( 'Sorry, no posts matched your criteria.', 'modrox' ); ?></p>

                    <?php endif; ?>

But when I click a category from the menu, always shows me all posts, from custom post type. How can I do to show only the category selected from the menu

<?php $wpb_all_query = new WP_Query(array('post_type' => 'documentos', 'order' => 'ASC', 'post_status' => 'publish', 'cat_name' => 'category_slug')); ?>

You should have to add "cat_name" parameter in your query and have to pass category slug into it.

You need to modify your query as:

    $pargs = array(

        'post_per_page' => '-1',

        'post_type' => 'documentos',

        'tax_query' => array(

            array(

                'taxonomy' => 'category',

                'field'    => 'slug',

                'terms' => $term_slugs

            ),

         'post_status'=>'publish'

        );



$wpb_all_query = new WP_Query($pargs);

Note: $term_slugs is a category slug name.

This is the working code:

<?php

// find last word from URL ( this will basically give you "rings" )

$cat = basename( parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH ) );



// the query

$args = array(

    'post_type'      => 'documentos',

    'posts_per_page' => -1,

    'orderby'        => 'DATE',

    'order'          => 'ASC',

    'tax_query'      => array(

        array(

            'taxonomy' => 'category',

            'field'    => 'slug',

            'terms'    => esc_attr( $cat ),

        ),

    ),

);



// query results

$the_query = new WP_Query( $args );



// display results

if ( $the_query->have_posts() ) {

    while ( $the_query->have_posts() ) {

        $the_query->the_post();

        echo '<h2>' . get_the_title() . '</h2>';

    }

    // reset post

    wp_reset_postdata();

}

?>

Reference link