courses by sub category

WWW_DATA/wp-content/plugins/apex_global_lms/functions.php

@@ -34,21 +34,6 @@ add_shortcode('vq_course_banner', 'vq_render_course_banner');
 
 add_shortcode('vq_lms_inquiry_form', 'vq_render_inquiry_form');
 
-add_filter('the_title','change_title');
-
-
-function change_title($data) {
-
-    global $post;
-	$title = get_post_meta($post->ID, 'lms_title', true);
-    if ($title != null) {
-        $data = $title;
-    }
-
-    return $data;
-
-}
-
 add_action( 'vq_course_promo_add_form_fields', 'add_course_promo', 10, 2 );
 add_action( 'vq_course_promo_edit_form_fields', 'edit_course_promo', 10, 2 );
 add_action( 'created_vq_course_promo', 'save_course_promo', 10, 2 );

WWW_DATA/wp-content/plugins/apex_global_lms/template/learner-detail.php

@@ -28,6 +28,24 @@ $courses = new WP_Query(array(
         'orderby'=>'title',
         'order'=>'ASC'
 ));
+
+
+$coursesArr = [];
+while($courses->have_posts()) {
+	$courses->the_post();
+	array_push($coursesArr,array(
+		"id" => get_the_ID(),
+		"name" => get_the_title(),
+		"cost" => get_post_meta(get_the_ID(), 'course_fee', true)
+	));
+}
+
+
+$categories = get_terms( array(
+	        'taxonomy'  => 'vq_course_taxonomy',
+	        'hide_empty' => false,
+        ));
+
 while (have_posts()):
     the_post();
 ?>
@@ -147,20 +165,29 @@ while (have_posts()):
             <div class="lms-courses-select">
                 <select class="form-control" data-placeholder="Select a course...">
                     <option value=""></option>
+                    <?php foreach($categories as $term): ?>
+                    <?php if($term->parent != 0): ?>
+                            <optgroup label="<?php echo $term->name; ?>">
 			                    <?php
-                    $coursesArr = [];
-                    while($courses->have_posts()) {
-                        $courses->the_post();
-                        array_push($coursesArr,array(
-                            "id" => get_the_ID(),
-                            "name" => get_the_title(),
-                            "cost" => get_post_meta(get_the_ID(), 'course_fee', true)
-                        ));
-                        ?>
-                        <option value="<?php the_ID(); ?>"><?php the_title(); ?></option>
-                        <?php
-                    }
+			                    $args = array(
+				                    'post_type' => 'vq_course',
+				                    'posts_per_page' => '-1',
+				                    'tax_query'      => array(
+					                    array(
+						                    'taxonomy' => 'vq_course_taxonomy',
+						                    'field'    => 'slug',
+						                    'terms'    => $term->name
+					                    ),
+				                    ),
+			                    );
+			                    $list = new WP_Query($args);
+			                    foreach($list->posts as $crs):
+                                    echo "<option value='" .  $crs->ID . "'>". $crs->post_title ."</option>";
+                                endforeach;
                                 ?>
+                            </optgroup>
+                    <?php  endif;?>
+                    <?php endforeach; ?>
                 </select>
             </div>
         </div>