def from_model(cls, model):
"""
Feed me a model, get a ModelState representing it out.
"""
# Deconstruct the fields
fields = []
for field in model._meta.local_fields:
name, path, args, kwargs = field.deconstruct()
field_class = import_by_path(path)
try:
fields.append((name, field_class(*args, **kwargs)))
except TypeError as e:
raise TypeError("Couldn't reconstruct field %s on %s.%s: %s" %
(
name,
model._meta.app_label,
model._meta.object_name,
e,
))
for field in model._meta.local_many_to_many:
name, path, args, kwargs = field.deconstruct()
field_class = import_by_path(path)
try:
fields.append((name, field_class(*args, **kwargs)))
except TypeError as e:
raise TypeError("Couldn't reconstruct m2m field %s on %s: %s" %
(
name,
model._meta.object_name,
e,
))
# Extract the options
options = {}
for name in DEFAULT_NAMES:
# Ignore some special options
if name in ["apps", "app_label"]:
continue
elif name in model._meta.original_attrs:
if name == "unique_together":
ut = model._meta.original_attrs["unique_together"]
options[name] = set(normalize_unique_together(ut))
else:
options[name] = model._meta.original_attrs[name]
# Make our record
bases = tuple(
("%s.%s" %
(base._meta.app_label,
base._meta.model_name) if hasattr(base, "_meta") else base)
for base in model.__bases__
if (not hasattr(base, "_meta") or not base._meta.abstract))
if not bases:
bases = (models.Model, )
return cls(
model._meta.app_label,
model._meta.object_name,
fields,
options,
bases,
)
def from_model(cls, model):
"""
Feed me a model, get a ModelState representing it out.
"""
# Deconstruct the fields
fields = []
for field in model._meta.local_fields:
name, path, args, kwargs = field.deconstruct()
field_class = import_by_path(path)
try:
fields.append((name, field_class(*args, **kwargs)))
except TypeError as e:
raise TypeError("Couldn't reconstruct field %s on %s.%s: %s" % (
name,
model._meta.app_label,
model._meta.object_name,
e,
))
for field in model._meta.local_many_to_many:
name, path, args, kwargs = field.deconstruct()
field_class = import_by_path(path)
try:
fields.append((name, field_class(*args, **kwargs)))
except TypeError as e:
raise TypeError("Couldn't reconstruct m2m field %s on %s: %s" % (
name,
model._meta.object_name,
e,
))
# Extract the options
options = {}
for name in DEFAULT_NAMES:
# Ignore some special options
if name in ["app_cache", "app_label"]:
continue
elif name in model._meta.original_attrs:
if name == "unique_together":
ut = model._meta.original_attrs["unique_together"]
options[name] = set(normalize_unique_together(ut))
else:
options[name] = model._meta.original_attrs[name]
# Make our record
bases = tuple(
("%s.%s" % (base._meta.app_label, base._meta.object_name.lower()) if hasattr(base, "_meta") else base)
for base in model.__bases__
if (not hasattr(base, "_meta") or not base._meta.abstract)
)
if not bases:
bases = (models.Model, )
return cls(
model._meta.app_label,
model._meta.object_name,
fields,
options,
bases,
)
def __init__(self, name, unique_together):
self.name = name
unique_together = normalize_unique_together(unique_together)
self.unique_together = set(tuple(cons) for cons in unique_together)
def __init__(self, name, unique_together):
self.name = name
unique_together = normalize_unique_together(unique_together)
self.unique_together = set(tuple(cons) for cons in unique_together)
