Update tags.py

Author: marcoshemann

crudbuilder/templatetags/tags.py

@@ -29,7 +29,7 @@ def get_value(obj, field):
 
 
 @register.filter
-def get_model_fields(obj):
+def get_model_fields(obj, exclude=[]):
     model = obj.__class__
     excludes = ['pk']
 
@@ -40,9 +40,8 @@ def get_model_fields(obj):
         ):
             property_fields.append(Field(name=name, verbose_name=name))
     ret = chain(obj._meta.fields, property_fields)
-    if exclude:
-        return chain(i for i in ret if not i.name in exclude)
-    return ret
+    return [i for i in ret if i.name not in exclude]
+
 
 @register.filter
 def get_verbose_field_name(instance, field_name):