fix: add base class for WuttaList schema type

src/wuttaweb/forms/schema.py

@@ -280,13 +280,59 @@ class WuttaQuantity(colander.Decimal):
         return self.app.render_quantity(appstruct)
 
 
-class WuttaSet(colander.Set):
+class WuttaList(colander.List):
     """
-    Custom schema type for :class:`python:set` fields.
+    Custom schema type for :class:`python:list` fields; this is a
-
+    subclass of :class:`colander.List`.
-    This is a subclass of :class:`colander.Set`.
 
     :param request: Current :term:`request` object.
+
+    As of now this merely provides a way (in fact, requires you) to
+    pass the request in, so it can be leveraged as needed.  Instances
+    of this type will have the following attributes:
+
+    .. attribute:: request
+
+       Reference to the current :term:`request`.
+
+    .. attribute:: config
+
+       Reference to the app :term:`config object`.
+
+    .. attribute:: app
+
+       Reference to the :term:`app handler` instance.
+    """
+
+    def __init__(self, request):
+        super().__init__()
+        self.request = request
+        self.config = self.request.wutta_config
+        self.app = self.config.get_app()
+
+
+class WuttaSet(colander.Set):
+    """
+    Custom schema type for :class:`python:set` fields; this is a
+    subclass of :class:`colander.Set`.
+
+    :param request: Current :term:`request` object.
+
+    As of now this merely provides a way (in fact, requires you) to
+    pass the request in, so it can be leveraged as needed.  Instances
+    of this type will have the following attributes:
+
+    .. attribute:: request
+
+       Reference to the current :term:`request`.
+
+    .. attribute:: config
+
+       Reference to the app :term:`config object`.
+
+    .. attribute:: app
+
+       Reference to the :term:`app handler` instance.
     """
 
     def __init__(self, request):

tests/forms/test_schema.py

@@ -198,6 +198,26 @@ class TestWuttaMoney(WebTestCase):
         self.assertEqual(widget.scale, 4)
 
 
+class TestWuttaList(WebTestCase):
+
+    def test_constructor(self):
+        node = colander.SchemaNode(mod.WuttaList(self.request))
+        typ = node.typ
+        self.assertIs(typ.request, self.request)
+        self.assertIs(typ.config, self.config)
+        self.assertIs(typ.app, self.app)
+
+
+class TestWuttaSet(WebTestCase):
+
+    def test_constructor(self):
+        node = colander.SchemaNode(mod.WuttaSet(self.request))
+        typ = node.typ
+        self.assertIs(typ.request, self.request)
+        self.assertIs(typ.config, self.config)
+        self.assertIs(typ.app, self.app)
+
+
 class TestWuttaQuantity(WebTestCase):
 
     def test_serialize(self):