List of subcategories with featured image

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In a page, I need to display a list of all sub categories of a specify category.

For example, in the category Sport have 6 subcategories:

  • Swim
  • Football
  • Basket
  • Ski
  • Hockey

Each subcategory has a featured image, title and description, which I’d like to display.

I’ve add featured image using this code (in functions.php):

add_action('init', 'my_category_module');
function my_category_module() {
 add_action ( 'edit_category_form_fields', 'add_image_cat');
 add_action ( 'edited_category', 'save_image');
 }

function add_image_cat($tag){
 $category_images = get_option( 'category_images' );
 $category_image="";
 if ( is_array( $category_images ) && array_key_exists( $tag->term_id, $category_images ) ) {
 $category_image = $category_images[$tag->term_id] ;
 }
 ?>
 <tr>
 <th scope="row" valign="top"><label for="auteur_revue_image">Image</label></th>
 <td>
 <?php
 if ($category_image !=""){
 ?>
 <img src="https://wordpress.stackexchange.com/questions/248357/<?php echo $category_image;?>" alt="" title=""/>
 <?php
 }
 ?>
 <br/>
 <input type="text" name="category_image" id="category_image" value="<?php echo $category_image; ?>"/><br />
 <span>This field allows you to add a picture to illustrate the category. Upload the image from the media tab WordPress and paste its URL here.</span>
 </td>
 </tr>
 <?php
 }
function save_image($term_id){
 if ( isset( $_POST['category_image'] ) ) {
 //load existing category featured option
 $category_images = get_option( 'category_images' );
 //set featured post ID to proper category ID in options array
 $category_images[$term_id] =  $_POST['category_image'];
 //save the option array
 update_option( 'category_images', $category_images );
 }
 }

category.php

<?php
 if(is_category()){
 $category_images = get_option( 'category_images' );
 $category_image="";
 if ( is_array( $category_images ) && array_key_exists( get_query_var('cat'), $category_images ) ){

$category_image = $category_images[get_query_var('cat')] ;
 ?>
 <img src="https://wordpress.stackexchange.com/questions/248357/<?php echo $category_image;?>"/>
 <?php
 }
 }
 ?>

I need to have a grid look like this (this is for recent post )

With this I can display all categories with their descriptions, but how can I add the featured image and display only subcategories of certain category parent?

<?php
$categories = get_categories( array(
    'orderby' => 'name',
    'order'   => 'ASC'
) );

foreach( $categories as $category ) {
    $category_link = sprintf( 
        '<a href="https://wordpress.stackexchange.com/questions/248357/%1$s" alt="%2$s">%3$s</a>',
        esc_url( get_category_link( $category->term_id ) ),
        esc_attr( sprintf( __( 'View all posts in %s', 'textdomain' ), $category->name ) ),
        esc_html( $category->name )
    );

    echo '<p>' . sprintf( esc_html__( 'Category: %s', 'textdomain' ), $category_link ) . '</p> ';
    echo '<p>' . sprintf( esc_html__( 'Description: %s', 'textdomain' ), $category->description ) . '</p>';}

Also is possible to display as a grid?

Thanks

2 Answers
2

How can I add the featured image?

From what I can tell in your code, you’ve stored all category featured images in the category_images option. So you can use get_option to retrieve the featured image for each category:

$image_urls = get_option( 'category_images', array() );    

foreach ( $categories as $category ) {
    $cat_id = $category->term_id;
    $image_url = isset( $image_urls[$cat_id ) ? $image_urls[$cat_id] : '';

    ...
}

You can then use $image_url as the src attribute of an <img>.

How can I display only the subcategories of a certain category parent?

Like get_terms, get_categories has a ‘child_of’ parameter. Again, in your foreach loop:

    $sub_categories = get_categories( array(
        'orderby' => 'name',
        'order' => 'ASC',
        'child_of' => $cat_id,
    ) );

    foreach ( $sub_categories as $sub_category ) {
        // Process the sub-categories here.
    }

Is it possible to display these as a grid?

Yes, you can! But that’s an HTML/CSS question that I think is beyond the scope of this question. Go ahead and open a new question under that topic. You can never ask too many. 🙂

Hope this helps!

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