Added method to check if the paginator supports new-style page links

boards/abstracts/paginator.py

@@ -70,3 +70,5 class DividedPaginator(Paginator):
             for key in self.params.keys()])
         return self.link + url_params
 
+    def supports_urls(self):
+        return self.link is not None and self.params is not None

boards/templatetags/board.py

@@ -45,4 +45,5 def post_view(post, *args, **kwargs):
 
 @register.simple_tag(name='page_url')
 def page_url(paginator, page_number, *args, **kwargs):
-    return paginator.get_page_url(page_number)
+    if paginator.supports_urls():
+        return paginator.get_page_url(page_number)