Add basic support for performing / tracking app upgrades

also add `MasterView.executable` and friends

tailbone/forms2/core.py

@@ -33,7 +33,7 @@ import sqlalchemy as sa
 from sqlalchemy import orm
 from sqlalchemy.ext.associationproxy import AssociationProxy, ASSOCIATION_PROXY
 
-from rattail.util import prettify
+from rattail.util import prettify, pretty_boolean
 
 import colander
 from colanderalchemy import SQLAlchemySchemaNode
@@ -42,6 +42,8 @@ from deform import widget as dfwidget
 from pyramid.renderers import render
 from webhelpers2.html import tags, HTML
 
+from tailbone.util import raw_datetime
+
 
 log = logging.getLogger(__name__)
 
@@ -176,7 +178,7 @@ class Form(object):
                  model_instance=None, model_class=None, labels={}, renderers={}, widgets={},
                  action_url=None, cancel_url=None):
 
-        self.fields = fields
+        self.fields = list(fields) if fields is not None else None
         self.schema = schema
         self.request = request
         self.readonly = readonly
@@ -274,9 +276,15 @@ class Form(object):
                 self.readonly_fields.remove(key)
 
     def set_type(self, key, type_):
-        if type_ == 'codeblock':
+        if type_ == 'datetime':
+            self.set_renderer(key, self.render_datetime)
+        elif type_ == 'boolean':
+            self.set_renderer(key, self.render_boolean)
+        elif type_ == 'codeblock':
             self.set_renderer(key, self.render_codeblock)
             self.set_widget(key, dfwidget.TextAreaWidget(cols=80, rows=8))
+        else:
+            raise ValueError("unknown type for '{}' field: {}".format(key, type_))
 
     def set_renderer(self, key, renderer):
         self.renderers[key] = renderer
@@ -354,6 +362,16 @@ class Form(object):
             return ""
         return six.text_type(value)
 
+    def render_datetime(self, record, field_name):
+        value = self.obtain_value(record, field_name)
+        if value is None:
+            return ""
+        return raw_datetime(self.request.rattail_config, value)
+
+    def render_boolean(self, record, field_name):
+        value = self.obtain_value(record, field_name)
+        return pretty_boolean(value)
+
     def render_codeblock(self, record, field_name):
         value = self.obtain_value(record, field_name)
         if value is None: