diff --git a/settings/templatetags/template_filters.py b/settings/templatetags/template_filters.py
index 3bc70928..e8d892fb 100644
--- a/settings/templatetags/template_filters.py
+++ b/settings/templatetags/template_filters.py
@@ -341,3 +341,9 @@ def get_pages(objects, number):
 @register.filter
 def lowfirst(value):
     return value[:1].lower() + value[1:] if value else ''
+
+@register.filter
+def join_lookup(value):
+    if isinstance(value, list):
+        return ", ".join(value)
+    return getattr(value, 'pk', '')
diff --git a/templates/client/blank.html b/templates/client/blank.html
index f2e230aa..aa6ea4e0 100644
--- a/templates/client/blank.html
+++ b/templates/client/blank.html
@@ -55,10 +55,10 @@ This template include basic anf main styles and js files,
     <!--test expo_b -->
     <script>
         window.sendData = {
-            "theme": [{{ themes|join:", " }}],
-            "country": [{{ country|join:", " }}],
-            "city": [{{ city|join:", " }}],
-            "tag": [{{ tag|join:", " }}],
+            "theme": [{{ themes|join_lookup }}],
+            "country": [{{ country|join_lookup }}],
+            "city": [{{ city|join_lookup }}],
+            "tag": [{{ tag|join_lookup }}],
             "month": "{{ month.slug }}",
             "year": "{{ year.text }}",
             "event_type": "{{ event_type }}",