Suppress not-an-iterable message for model_utils.managers. Fixes #117

pylint_django/augmentations/__init__.py

@@ -11,7 +11,7 @@
 from pylint.checkers.newstyle import NewStyleConflictChecker
 from pylint.checkers.variables import VariablesChecker
 from pylint.__pkginfo__ import numversion as PYLINT_VERSION
-from pylint.checkers.typecheck import TypeChecker
+from pylint.checkers.typecheck import IterableChecker, TypeChecker
 from pylint.checkers.variables import ScopeConsumer
 
 from pylint_plugin_utils import augment_visit, suppress_message
@@ -676,6 +676,17 @@ def wrap_func(*args, **kwargs):
     return wrap_func
 
 
+def is_model_utils_manager(node):
+    """Checks that node is derivative of model_utils.managers classes."""
+    try:
+        # try to get the model manager node, i.e. 'objects'
+        manager = node.func.expr
+    except:  # noqa: E722, pylint: disable=bare-except
+        return False
+
+    return isinstance(manager, Attribute) and manager.attrname == 'objects'
+
+
 # The names of some visit functions changed in this commit:
 # https://bitbucket.org/logilab/pylint/commits/c94ee95abaa5737f13b91626fe321150c0ddd140
 
@@ -795,3 +806,6 @@ def apply_augmentations(linter):
         VariablesChecker.leave_module = wrap(current_leave_module, ignore_import_warnings_for_related_fields)
         # VariablesChecker.leave_module is now wrapped
     # else VariablesChecker.leave_module is already wrapped
+
+    # supress not-an-iterable for model_utils.managers
+    suppress_message(linter, IterableChecker._check_iterable, 'not-an-iterable', is_model_utils_manager)