fix: fix 'no-member' for pylint

.pylintrc

@@ -3,4 +3,3 @@
 [MESSAGES CONTROL]
 disable=fixme,
         duplicate-code,
-        no-member,

src/wuttaweb/forms/widgets.py

@@ -407,6 +407,7 @@ class RoleRefsWidget(WuttaCheckboxChoiceWidget):
     """
 
     readonly_template = "readonly/rolerefs"
+    session = None
 
     def serialize(self, field, cstruct, **kw):  # pylint: disable=empty-docstring
         """ """
@@ -463,6 +464,7 @@ class PermissionsWidget(WuttaCheckboxChoiceWidget):
 
     template = "permissions"
     readonly_template = "readonly/permissions"
+    permissions = None
 
     def serialize(self, field, cstruct, **kw):  # pylint: disable=empty-docstring
         """ """

src/wuttaweb/grids/filters.py

@@ -59,9 +59,10 @@ class GridFilter:  # pylint: disable=too-many-instance-attributes
 
     :param request: Current :term:`request` object.
 
-    :param model_property: Property of a model class, representing the
-       column by which to filter.  For instance,
-       ``model.Person.full_name``.
+    :param nullable: Boolean indicating whether the filter should
+       include ``is_null`` and ``is_not_null`` verbs.  If not
+       specified, the column will be inspected (if possible) and use
+       its nullable flag.
 
     :param \\**kwargs: Any additional kwargs will be set as attributes
        on the filter instance.
@@ -176,6 +177,7 @@ class GridFilter:  # pylint: disable=too-many-instance-attributes
         label=None,
         verbs=None,
         choices=None,
+        nullable=None,
         default_active=False,
         default_verb=None,
         default_value=None,
@@ -196,10 +198,14 @@ class GridFilter:  # pylint: disable=too-many-instance-attributes
             self.verbs = verbs
         if default_verb:
             self.default_verb = default_verb
+        self.verb = None  # active verb is set later
 
         # choices
         self.set_choices(choices or {})
 
+        # nullable
+        self.nullable = nullable
+
         # value
         self.default_value = default_value
         self.value = self.default_value
@@ -398,18 +404,12 @@ class AlchemyFilter(GridFilter):
     :param model_property: Property of a model class, representing the
        column by which to filter.  For instance,
        ``model.Person.full_name``.
-
-    :param nullable: Boolean indicating whether the filter should
-       include ``is_null`` and ``is_not_null`` verbs.  If not
-       specified, the column will be inspected and use its nullable
-       flag.
     """
 
     def __init__(self, *args, **kwargs):
-        nullable = kwargs.pop("nullable", None)
+        self.model_property = kwargs.pop("model_property")
         super().__init__(*args, **kwargs)
 
-        self.nullable = nullable
         if self.nullable is None:
             columns = self.model_property.prop.columns
             if len(columns) == 1:

src/wuttaweb/views/batch.py

@@ -398,11 +398,10 @@ class BatchMasterView(MasterView):
         :attr:`~wuttjamaican:wuttjamaican.db.model.batch.BatchMixin.rows`
         data.
         """
+        session = self.Session()
         batch = obj
         row_model_class = self.get_row_model_class()
-        query = self.Session.query(row_model_class).filter(
-            row_model_class.batch == batch
-        )
+        query = session.query(row_model_class).filter(row_model_class.batch == batch)
         return query
 
     def configure_row_grid(self, grid):  # pylint: disable=empty-docstring

src/wuttaweb/views/master.py

@@ -399,6 +399,8 @@ class MasterView(View):  # pylint: disable=too-many-public-methods
     # attributes
     ##############################
 
+    model_class = None
+
     # features
     listable = True
     has_grid = True
@@ -526,11 +528,12 @@ class MasterView(View):  # pylint: disable=too-many-public-methods
         * :meth:`redirect_after_create()`
         """
         self.creating = True
+        session = self.Session()
         form = self.make_model_form(cancel_url_fallback=self.get_index_url())
 
         if form.validate():
             obj = self.create_save_form(form)
-            self.Session.flush()
+            session.flush()
             return self.redirect_after_create(obj)
 
         context = {
@@ -2702,9 +2705,7 @@ class MasterView(View):  # pylint: disable=too-many-public-methods
         do not set the :attr:`model_class`, then you *must* set the
         :attr:`model_name`.
         """
-        if hasattr(cls, "model_class"):
-            return cls.model_class
-        return None
+        return cls.model_class
 
     @classmethod
     def get_model_name(cls):

tests/grids/test_filters.py

@@ -52,7 +52,7 @@ class TestGridFilter(WebTestCase):
 
         # verb is not set by default, but can be set
         filtr = self.make_filter(model.Setting.name)
-        self.assertFalse(hasattr(filtr, "verb"))
+        self.assertIsNone(filtr.verb)
         filtr = self.make_filter(model.Setting.name, verb="foo")
         self.assertEqual(filtr.verb, "foo")
 

tests/views/test_master.py

@@ -624,7 +624,7 @@ class TestMasterView(WebTestCase):
         view = self.make_view()
 
         # empty by default
-        self.assertFalse(hasattr(mod.MasterView, "model_class"))
+        self.assertIsNone(mod.MasterView.model_class)
         data = view.get_grid_data(session=self.session)
         self.assertEqual(data, [])