def build_adaptee(field, expand_collection=True):
'''Build an adaptee vector for a field instance.
This vector is to be used while trying to adapt on fields (for serialization,
formatting, widgets etc.).
'''
# Load (if not already) the object-factory lookup function.
# Note it must be lazily loaded, as is not available at module's load time.
from ckanext.publicamundi.lib.metadata import factory_for
# Build adaptee vector
adaptee = [field]
if not expand_collection:
return adaptee
y = field
while IContainerField.providedBy(y):
adaptee.append(y.value_type)
y = y.value_type
if not (y is field) and IObjectField.providedBy(y):
# Need a multiadapter for a (probably nested) container of objects:
# replace field (instance of ObjectField) with a dummy object
adaptee[-1] = factory_for(y.schema)()
return adaptee
def build_adaptee(field, expand_collection=True):
'''Build an adaptee vector for a field instance.
This vector is to be used while trying to adapt on fields (for serialization,
formatting, widgets etc.).
'''
# Load (if not already) the object-factory lookup function.
# Note it must be lazily loaded, as is not available at module's load time.
from ckanext.publicamundi.lib.metadata import factory_for
# Build adaptee vector
adaptee = [field]
if not expand_collection:
return adaptee
y = field
while IContainerField.providedBy(y):
adaptee.append(y.value_type)
y = y.value_type
if not (y is field) and IObjectField.providedBy(y):
# Need a multiadapter for a (probably nested) container of objects:
# replace field (instance of ObjectField) with a dummy object
adaptee[-1] = factory_for(y.schema)()
return adaptee
def __getitem__(self, key):
field = self.schema[key]
if IContainer.providedBy(field):
return VirtualList(self, key, self.context, field.value_type)
elif IObject.providedBy(field):
return VirtualSection(self, key, self.context, field.schema)
raise KeyError(key)
def compound_field(field):
return IContainer.providedBy(field) or IObject.providedBy(field)