def get_weight(prop):
if is_onetoone(prop):
return 4
elif is_onetomany(prop):
return 3
elif is_manytoone(prop):
return 2
elif is_manytomany(prop):
return 1
return 0
def factory(cls, prop):
widget = None
widget_kw = {}
factory_widget = None
cols = getattr(prop, 'columns', [])
if cls.hint_name:
if is_relation(prop):
widget = prop.info.get(cls.hint_name)
elif cols:
widget = cols[0].info.get(cls.hint_name)
if widget:
if issubclass(widget, NoWidget):
# We don't want to display this field!
return None
if issubclass(widget, FactoryWidget):
factory_widget = widget
widget = None
if widget:
pass
elif is_onetomany(prop):
if not cls.onetomany_widget:
raise twc.WidgetError(
"Cannot automatically create a widget " +
"for one-to-many relation '%s'" % prop.key)
prop_cls = prop.mapper.class_
edit_link = getattr(prop_cls, 'tws_edit_link', None)
if cls.add_edit_link:
widget_kw['link'] = edit_link
widget_kw.update({
'entity': prop_cls,
})
widget = cls.onetomany_widget
elif sum([c.primary_key for c in getattr(prop, 'columns', [])]):
widget = cls.pkey_widget
elif is_manytoone(prop):
if not cls.manytoone_widget:
raise twc.WidgetError(
"Cannot automatically create a widget " +
"for many-to-one relation '%s'" % prop.key)
widget_kw = {
'entity': prop.mapper.class_
}
widget = cls.manytoone_widget
elif is_manytomany(prop):
# Use the same widget as onetomany
if not cls.onetomany_widget:
raise twc.WidgetError(
"Cannot automatically create a widget " +
"for many-to-many relation '%s'" % prop.key)
prop_cls = prop.mapper.class_
edit_link = getattr(prop_cls, 'tws_edit_link', None)
if cls.add_edit_link:
widget_kw['link'] = edit_link
widget = cls.onetomany_widget
widget_kw.update({
'id': prop.key,
'entity': prop_cls,
'reverse_property_name': get_reverse_property_name(prop),
})
elif is_onetoone(prop):
if not cls.onetoone_widget:
raise twc.WidgetError(
"Cannot automatically create a widget " +
"for one-to-one relation '%s'" % prop.key)
required = required_widget(prop)
widget = cls.onetoone_widget
widget_kw = {
'id': prop.key,
'entity': prop.mapper.class_,
'required': required,
'reverse_property_name': get_reverse_property_name(prop),
'required_on_parent': (not required),
}
elif prop.key in cls.name_widgets:
widget = cls.name_widgets[prop.key]
else:
for t, c in product(cls.type_widgets, cols):
if isinstance(c.type, t):
widget = cls.type_widgets[t]
break
else:
if not cls.default_widget:
raise twc.WidgetError(
"Cannot automatically create a widget " +
"for '%s'" % prop.key)
widget = cls.default_widget
if widget:
widget_kw['id'] = prop.key
if factory_widget:
for k, v in widget._all_params.items():
value = getattr(factory_widget, k, None)
if value and value != v.default:
widget_kw[k] = value
if 'validator' not in widget_kw and not getattr(widget, 'validator', None) and required_widget(prop):
widget_kw['validator'] = twc.Required
widget = widget(**widget_kw)
return widget
