[giftofjehovahParticipant]

Hi,

How do i add Filter posts by multiple checkbox categories?
As shown on:
http://stackoverflow.com/questions/16665868/filter-posts-by-multiple-checkbox-categories-wordpress

Are there any plugin available?

Thank you so much!

Best rgds,
Vivien

[giftofjehovahParticipant]

I forgot to mention my website!

http://www.langelir.com

Thanks again!

[RadModerator]

Hi there,

Thanks for posting in.

That is possible by custom development.

Example, by adding this at your child theme’s functions.php

function x_filter_by_category( $query ) {
if ( $query->is_home() && $query->is_main_query() && isset($_GET['cat_select']) ) {
$query->set( 'cat', implode( ',', $_GET['cat_select'] ) );
}
}
add_action('pre_get_posts', 'x_filter_by_category');

Then somewhere on your template/or widget add this code. (let say you have wp-sidebar.php at your child theme’s /framework/views/{STACK}/ folder.

<?php if ( x_get_content_layout() != 'full-width' ) : ?>

<!----- START : THIS IS FILTER FORM UNDER wp-sidebar.php -------->
<form action="<?php echo home_url()?>">
<?php 
  $categories = get_categories(); 
  foreach ($categories as $category) {
  echo '<input type="checkbox" name="cat_select[]" value="'.$category->cat_ID.'"> '.$category->category_nicename.'<br />';
  }
?>
<button type="submit">Filter</button>
</form>

<!----- END : THIS IS FILTER FORM UNDER wp-sidebar.php -------->

  <aside class="<?php x_sidebar_class(); ?>" role="complementary">
    <?php if ( get_option( 'ups_sidebars' ) != array() ) : ?>
      <?php dynamic_sidebar( apply_filters( 'ups_sidebar', 'sidebar-main' ) ); ?>
    <?php else : ?>
      <?php dynamic_sidebar( 'sidebar-main' ); ?>
    <?php endif; ?>
  </aside>

<?php endif; ?>

Cheers!

[Author]

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