The edit_link_category_form_fields WordPress PHP action fires after the Edit Link Category form fields are displayed. It helps you to modify or add new fields to the Edit Link Category form.
Usage
add_action('edit_link_category_form_fields', 'your_custom_function');
function your_custom_function($tag) {
// your custom code here
}
Parameters
$tag(WP_Term): The current link category term object.
More information
See WordPress Developer Resources: edit_link_category_form_fields
Examples
Add a custom field to the Edit Link Category form
Add a custom field called ‘Custom Field’ to the Edit Link Category form and display its value.
add_action('edit_link_category_form_fields', 'add_custom_field_to_link_category_form');
function add_custom_field_to_link_category_form($tag) {
$custom_value = get_term_meta($tag->term_id, 'custom_field', true);
?>
<tr class="form-field">
<th scope="row"><label for="custom_field"><?php _e('Custom Field'); ?></label></th>
<td><input name="custom_field" id="custom_field" type="text" value="<?php echo esc_attr($custom_value); ?>" /></td>
</tr>
<?php
}
Save the custom field value
Save the value of the custom field added in example 1.
add_action('edited_link_category', 'save_custom_field_value', 10, 2);
function save_custom_field_value($term_id) {
if (isset($_POST['custom_field'])) {
update_term_meta($term_id, 'custom_field', sanitize_text_field($_POST['custom_field']));
}
}
Add a custom checkbox to the Edit Link Category form
Add a custom checkbox called ‘Featured’ to the Edit Link Category form.
add_action('edit_link_category_form_fields', 'add_featured_checkbox_to_link_category_form');
function add_featured_checkbox_to_link_category_form($tag) {
$is_featured = get_term_meta($tag->term_id, 'is_featured', true);
?>
<tr class="form-field">
<th scope="row"><label for="is_featured"><?php _e('Featured'); ?></label></th>
<td><input name="is_featured" id="is_featured" type="checkbox" <?php checked($is_featured, '1'); ?> value="1" /></td>
</tr>
<?php
}