Show redirect URL in <pre> element

passbook/admin/templates/administration/source/list.html

@@ -36,7 +36,7 @@
             <tr>
                 <td>{{ source.name }}</td>
                 <td>{{ source|fieldtype }}</td>
-                <td>{{ source.additional_info }}</td>
+                <td>{{ source.additional_info|safe }}</td>
                 <td>
                     <a class="btn btn-default btn-sm"
                         href="{% url 'passbook_admin:source-update' pk=source.uuid %}?back={{ request.get_full_path }}">{% trans 'Edit' %}</a>

passbook/oauth_client/models.py

@@ -29,13 +29,12 @@ class OAuthSource(Source):
     def get_login_button(self):
         url = reverse_lazy('passbook_oauth_client:oauth-client-login',
                            kwargs={'source_slug': self.slug})
-        # if self.provider_type == 'github':
-        #     return url, 'github-logo', _('GitHub')
         return url, self.provider_type, self.name
 
     @property
     def additional_info(self):
-        return "Callback URL: '%s'" % reverse_lazy('passbook_oauth_client:oauth-client-callback',
+        return "Callback URL: <pre>%s</pre>" % \
+            reverse_lazy('passbook_oauth_client:oauth-client-callback',
                          kwargs={'source_slug': self.slug})
 
     def has_user_settings(self):