def check_for_chooser(model, field):
if isinstance(field, fields.DummyField):
return
methname = field.name + "_choices"
m = get_class_attr(model, methname)
if m is not None:
ch = Chooser(model, field, m)
setattr(field, '_lino_chooser', ch)
def get_data_elem(cls, name):
"""Return the named data element. This can be a database field, a
:class:`lino.core.fields.RemoteField`, a
:class:`lino.core.fields.VirtualField` or a Django-style
virtual field (GenericForeignKey).
"""
#~ logger.info("20120202 get_data_elem %r,%r",model,name)
if not name.startswith('__'):
parts = name.split('__')
if len(parts) > 1:
# It's going to be a RemoteField
# logger.warning("20151203 RemoteField %s in %s", name, cls)
from lino.core import store
model = cls
field_chain = []
for n in parts:
if model is None:
raise Exception(
"Invalid remote field {0} for {1}".format(name, cls))
if isinstance(model, basestring):
model = resolve_model(model)
# logger.warning("20151203 %s", model)
# Django 1.9 no longer resolves the
# rel.model of ForeignKeys on abstract
# models.
# ~ 20130508 model.get_default_table().get_handle() # make sure that all atomizers of those fields get created.
fld = model.get_data_elem(n)
if fld is None:
# raise Exception("Part %s of %s got None" % (n,model))
raise Exception(
"Invalid RemoteField %s.%s (no field %s in %s)" %
(full_model_name(model), name, n, full_model_name(model)))
# make sure that the atomizer gets created.
store.get_atomizer(model, fld, fld.name)
field_chain.append(fld)
if getattr(fld, 'rel', None):
if AFTER18:
model = fld.rel.model
else:
model = fld.rel.to
else:
model = None
def func(obj, ar=None):
try:
for fld in field_chain:
if obj is None:
return obj
obj = fld._lino_atomizer.full_value_from_object(
obj, ar)
return obj
except Exception as e:
raise Exception(
"Error while computing %s: %s" % (name, e))
# ~ if False: # only for debugging
if True: # see 20130802
logger.exception(e)
return str(e)
return None
return fields.RemoteField(func, name, fld)
try:
return cls._meta.get_field(name)
except models.FieldDoesNotExist:
pass
v = get_class_attr(cls, name)
if v is not None:
return v
for vf in cls._meta.virtual_fields:
if vf.name == name:
return vf
def get_data_elem(cls, name):
"""Return the named data element. This can be a database field, a
:class:`lino.core.fields.RemoteField`, a
:class:`lino.core.fields.VirtualField` or a Django-style
virtual field (GenericForeignKey).
"""
#~ logger.info("20120202 get_data_elem %r,%r",model,name)
if not name.startswith('__'):
parts = name.split('__')
if len(parts) > 1:
# It's going to be a RemoteField
# logger.warning("20151203 RemoteField %s in %s", name, cls)
from lino.core import store
model = cls
field_chain = []
for n in parts:
if model is None:
raise Exception(
"Invalid remote field {0} for {1}".format(name, cls))
if isinstance(model, six.string_types):
model = resolve_model(model)
# logger.warning("20151203 %s", model)
# Django 1.9 no longer resolves the
# rel.model of ForeignKeys on abstract
# models.
# ~ 20130508 model.get_default_table().get_handle() # make sure that all atomizers of those fields get created.
fld = model.get_data_elem(n)
if fld is None:
# raise Exception("Part %s of %s got None" % (n,model))
raise Exception(
"Invalid RemoteField %s.%s (no field %s in %s)" %
(full_model_name(model), name, n, full_model_name(model)))
# make sure that the atomizer gets created.
store.get_atomizer(model, fld, fld.name)
field_chain.append(fld)
if getattr(fld, 'rel', None):
if AFTER18:
model = fld.rel.model
else:
model = fld.rel.to
else:
model = None
def func(obj, ar=None):
try:
for fld in field_chain:
if obj is None:
return obj
obj = fld._lino_atomizer.full_value_from_object(
obj, ar)
return obj
except Exception as e:
raise Exception(
"Error while computing %s: %s" % (name, e))
# ~ if False: # only for debugging
if True: # see 20130802
logger.exception(e)
return str(e)
return None
return fields.RemoteField(func, name, fld)
try:
return cls._meta.get_field(name)
except models.FieldDoesNotExist:
pass
v = get_class_attr(cls, name)
if v is not None:
return v
for vf in cls._meta.virtual_fields:
if vf.name == name:
return vf
def get_data_elem(cls, name):
"""Return the named data element. This can be a database field, a
:class:`lino.core.fields.RemoteField`, a
:class:`lino.core.fields.VirtualField` or a Django-style
virtual field (GenericForeignKey).
"""
#~ logger.info("20120202 get_data_elem %r,%r",model,name)
if not name.startswith('__'):
parts = name.split('__')
if len(parts) > 1:
# It's going to be a RemoteField
# logger.warning("20151203 RemoteField %s in %s", name, cls)
from lino.core import store
model = cls
field_chain = []
editable = False
for n in parts:
if model is None:
raise Exception(
"Invalid remote field {0} for {1}".format(
name, cls))
if isinstance(model, six.string_types):
# Django 1.9 no longer resolves the
# rel.model of ForeignKeys on abstract
# models, so we do it here.
model = resolve_model(model)
# logger.warning("20151203 %s", model)
fld = model.get_data_elem(n)
if fld is None:
raise Exception(
"Invalid RemoteField %s.%s (no field %s in %s)" %
(full_model_name(model), name, n,
full_model_name(model)))
# make sure that the atomizer gets created.
store.get_atomizer(model, fld, fld.name)
field_chain.append(fld)
if isinstance(fld, models.OneToOneRel):
editable = True
if getattr(fld, 'remote_field', None):
model = fld.remote_field.model
elif getattr(fld, 'rel', None):
raise Exception("20180712")
model = fld.rel.model
else:
model = None
def getter(obj, ar=None):
try:
for fld in field_chain:
if obj is None:
return None
obj = fld._lino_atomizer.full_value_from_object(
obj, ar)
return obj
except Exception as e:
# raise
msg = "Error while computing {}: {} ({} in {})"
raise Exception(msg.format(name, e, fld, field_chain))
# ~ if False: # only for debugging
if True: # see 20130802
logger.exception(e)
return str(e)
return None
if not editable:
return fields.RemoteField(getter, name, fld)
def setter(obj, value):
# logger.info("20180712 %s setter() %s", name, value)
# all intermediate fields are OneToOneRel
target = obj
try:
for fld in field_chain:
# print("20180712a %s" % fld)
if isinstance(fld, models.OneToOneRel):
reltarget = getattr(target, fld.name, None)
if reltarget is None:
rkw = {fld.field.name: target}
# print(
# "20180712 create {}({})".format(
# fld.related_model, rkw))
reltarget = fld.related_model(**rkw)
reltarget.full_clean()
reltarget.save()
setattr(target, fld.name, reltarget)
target.full_clean()
target.save()
# print("20180712b {}.{} = {}".format(
# target, fld.name, reltarget))
target = reltarget
else:
setattr(target, fld.name, value)
target.full_clean()
target.save()
# print(
# "20180712c setattr({},{},{}".format(
# target, fld.name, value))
return True
except Exception as e:
raise Exception("Error while setting %s: %s" %
(name, e))
# ~ if False: # only for debugging
if True: # see 20130802
logger.exception(e)
return str(e)
return False
return fields.RemoteField(getter, name, fld, setter)
try:
return cls._meta.get_field(name)
except models.FieldDoesNotExist:
pass
v = get_class_attr(cls, name)
if v is not None:
return v
for vf in cls._meta.private_fields:
if vf.name == name:
return vf
try:
return model._meta.get_field(name)
except models.FieldDoesNotExist, e:
pass
#~ s = name.split('.')
#~ if len(s) == 1:
#~ mod = import_module(model.__module__)
#~ rpt = getattr(mod,name,None)
#~ elif len(s) == 2:
#~ mod = getattr(settings.SITE.modules,s[0])
#~ rpt = getattr(mod,s[1],None)
#~ else:
#~ raise Exception("Invalid data element name %r" % name)
v = get_class_attr(model, name)
if v is not None:
return v
for vf in model._meta.virtual_fields:
if vf.name == name:
return vf
def get_choices_text(self, request, actor, field):
"""
Return the text to be displayed when an instance of this model
is being used as a choice in a combobox (i.e. by ForeignKey fields
pointing to this model).
`request` is the web request,
`actor` is the requesting actor.
Default is to simply return `unicode(self)`.
