Better name for static variable

trans/managers.py

@@ -225,14 +225,14 @@ class UnitManager(models.Manager):
         if source or context:
             with trans.search.index.source_searcher() as searcher:
                 if source:
-                    ret = ret.union(self.__search(searcher, 'source', trans.search.source_schema, query))
+                    ret = ret.union(self.__search(searcher, 'source', trans.search.SOURCE_SCHEMA, query))
                 if context:
-                    ret = ret.union(self.__search(searcher, 'context', trans.search.source_schema, query))
+                    ret = ret.union(self.__search(searcher, 'context', trans.search.SOURCE_SCHEMA, query))
 
         if translation:
             sample = self.all()[0]
             with trans.search.index.target_searcher(sample.translation.language.code) as searcher:
-                ret = ret.union(self.__search(searcher, 'target', trans.search.target_schema, query))
+                ret = ret.union(self.__search(searcher, 'target', trans.search.TARGET_SCHEMA, query))
 
         if checksums:
             return ret

trans/search.py

@@ -10,12 +10,12 @@ from django.conf import settings
 from whoosh.index import create_in, open_dir
 from whoosh.writing import BufferedWriter
 
-target_schema = Schema(
+TARGET_SCHEMA = Schema(
     checksum = ID(stored = True, unique = True),
     target = TEXT
 )
 
-source_schema = Schema(
+SOURCE_SCHEMA = Schema(
     checksum = ID(stored = True, unique = True),
     source = TEXT,
     context = TEXT
@@ -24,14 +24,14 @@ source_schema = Schema(
 def create_source_index():
     return create_in(
         settings.WHOOSH_INDEX,
-        schema = source_schema,
+        schema = SOURCE_SCHEMA,
         indexname = 'source'
     )
 
 def create_target_index(lang):
     return create_in(
         settings.WHOOSH_INDEX,
-        schema = target_schema,
+        schema = TARGET_SCHEMA,
         indexname = 'target-%s' % lang
     )