Fixes Level transform in Django 1.8.

BertrandBordage · Mar 22, 2018 · e7011ce · e7011ce
1 parent 82dc0fe
commit e7011ce
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/tree/transforms.py b/tree/transforms.py
@@ -1,10 +1,17 @@
+import django
 from django.db.models import IntegerField, Transform
 
 
 class Level(Transform):
     lookup_name = 'level'
     function = 'length'
 
+    if django.VERSION < (1, 9):
+        def as_sql(self, compiler, connection):
+            lhs, params = compiler.compile(self.lhs)
+            return self.template % {'function': self.function,
+                                    'expressions': lhs}, params
+
     @property
     def template(self):
         return ('%%(function)s(%%(expressions)s) / %s'