Add filter button functionality

Author: asifgenius

DjangoEcommerceApp/templates/admin_templates/product_list.html

@@ -32,13 +32,26 @@
     <div class="col-lg-12">
         <div class="search-element">
         <div class="card">
-                  
             <div class="card-body">
                 <b>Sort By : - </b>
                 <a href="{% url 'product_list' %}?filter={{ filter }}&orderby=id">ID</a>  | 
                 <a href="{% url 'product_list' %}?filter={{ filter }}&orderby=product_name">Title</a> |  
                 <a href="{% url 'product_list' %}?filter={{ filter }}&orderby=product_description">Description</a> 
             </div>
+            <div class="card-body dropdown">
+                <button class="btn btn-primary dropdown-toggle" type="button" id="dropdownMenu2"
+                        data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                        Filter
+                </button>
+                <div class="dropdown-menu" aria-labelledby="dropdownMenu2">
+                    {% for subCategories in all_subCategories %}
+                    <a href="{% url 'product_list' %}?subcategories_id={{ subCategories.id }}"
+                            class="dropdown-item">
+                            {{ subCategories.title}}
+                    </a>
+                    {% endfor %}
+                </div>
+            </div>
         </div>
         </div>
     </div>