clean invalid items from eboutic baskets

eboutic/templates/eboutic/eboutic_main.jinja

@@ -30,7 +30,17 @@
 {% block content %}
   <h1 id="eboutic-title">{% trans %}Eboutic{% endtrans %}</h1>
 
-  <div id="eboutic" x-data="basket({{ last_purchase_time }})">
+  <div
+    id="eboutic"
+    x-data="basket(
+            [{%- for prices in categories -%}
+              {%- for p in prices -%}
+                {% if not p.sold_out %}{{ p.id }},{% endif %}
+              {%- endfor -%}
+            {%- endfor -%}],
+            {{ last_purchase_time }},
+            )"
+  >
     <div id="basket">
       <h3>Panier</h3>
       <form method="post" action="">