Show only child categories for single.php

  • thealchemyst

    (@thealchemyst)


    17 years, 6 months ago

    I have a 2 level navigation. On the top I’m listing only the parent categories and what I want to accomplish is when I click on a particular post I want to have a sidebar where it lists the child categories for the particular parent category.

    For more clear presentation, here is a sample menu

    Technology
    – Gadgets
    – Microsoft
    – Hardware
    Science
    Entertainment

    Now, suppose I have a post under Technology. When clicked single.php is shown and I want to show a sidebar with the child categories (Gadgets, Microsoft, Hardware) from the active parent category.

    A bonus would be if this can be accomplishable even if I have a post filed under a child category (Gadgets for example) and still list the sibling categories.

Viewing 4 replies - 1 through 4 (of 4 total)
  • MichaelH

    (@michaelh)

    17 years, 6 months ago

    This in your sidebar:

    <?php
if (is_category( )) {
  $cat = get_query_var('cat');
  $parent = get_category ($cat);
  if ($parent->parent) {
    wp_list_categories ('child_of=' . $parent->parent);
    } else {
    wp_list_categories ('child_of=' . $cat);
  }
}
?>

    MichaelH

    (@michaelh)

    17 years, 6 months ago

    Oops, you wanted this for single.php, not category like above!

    <?php
if (is_single( )) {
  $ID = $wp_query->posts[0]->ID;
  $postcat = get_the_category($ID);
  $cat = $postcat[0]->cat_ID;
  $parent = get_category ($cat);
    if ($parent->parent) {
      wp_list_categories ('child_of=' . $parent->parent);
      } else {
      wp_list_categories ('child_of=' . $cat);
    }
  }
?>
    bkbdesign

    (@bkbdesign)

    16 years, 12 months ago

    This is exactly what I’ve been looking for… Anyway to stop it from displaying the word “categories” in front of the resulting list??

    bkbdesign

    (@bkbdesign)

    16 years, 12 months ago

    Nevermind, I figured it out. If anyone else has same question:

    <?php
if (is_category( )) {
  $cat = get_query_var('cat');
  $parent = get_category ($cat);
  if ($parent->parent) {
    wp_list_categories ('title_li=&child_of=' . $parent->parent);
    } else {
    wp_list_categories ('title_li=&child_of=' . $cat);
  }
}

?>
Viewing 4 replies - 1 through 4 (of 4 total)

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