Fix styling of AFE admin interface.

The change_list.html for tests used to be handled as a customized
template. The template failed to extend the original change_list.html,
so it didn't keep up to date. Additionally, the "white-space:pre" style
was applied to all <td> elements instead of just the description.

This restricts that style change to the description only, and also
maintains most of the default Django admin interface.

Signed-off-by: James Ren <[email protected]>

frontend/afe/admin.py

@@ -101,7 +101,7 @@ class TestAdmin(SiteAdmin):
               'test_time', 'sync_count', 'test_type', 'path',
               'dependencies', 'experimental', 'run_verify',
               'description')
-    list_display = ('name', 'test_type', 'description', 'sync_count')
+    list_display = ('name', 'test_type', 'admin_description', 'sync_count')
     search_fields = ('name',)
     filter_horizontal = ('dependency_labels',)
 

frontend/afe/models.py

@@ -1,6 +1,7 @@
 import logging, os
 from datetime import datetime
 from django.db import models as dbmodels, connection
+from xml.sax import saxutils
 import common
 from autotest_lib.frontend.afe import model_logic
 from autotest_lib.frontend import settings, thread_local
@@ -422,6 +423,12 @@ class Test(dbmodels.Model, model_logic.ModelExtensions):
     objects = model_logic.ExtendedManager()
 
 
+    def admin_description(self):
+        escaped_description = saxutils.escape(self.description)
+        return '<span style="white-space:pre">%s</span>' % escaped_description
+    admin_description.allow_tags = True
+
+
     class Meta:
         db_table = 'afe_autotests'