Fix models/__init__.py

git-svn-id: http://code.djangoproject.com/svn/django/branches/magic-removal@1677 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Robert Wittams 2005-12-16 00:01:19 +00:00
parent 8b857e8044
commit 263dff0121
1 changed files with 376 additions and 211 deletions

View File

@ -1051,13 +1051,29 @@ class Model(object):
delete.alters_data = True
def __get_manipulator(cls):
if hasattr(cls, 'MANIPULATOR'):
man = cls.MANIPULATOR
else:
class man:
pass
return man
__get_manipulator=classmethod(__get_manipulator)
def __get_add_manipulator(cls):
cls.AddManipulator = get_manipulator
class AddManipulator(cls.__get_manipulator(), ModelAddManipulator):
pass
AddManipulator.classinit(cls)
cls.AddManipulator = AddManipulator
return AddManipulator
AddManipulator = property(classmethod(__get_add_manipulator))
def __get_change_manipulator(cls):
class ChangeManipulator(cls.__get_manipulator(), ModelChangeManipulator):
pass
ChangeManipulator.classinit(cls)
cls.ChangeManipulator = ChangeManipulator
return ChangeManipulator
ChangeManipulator = property(classmethod(__get_change_manipulator))
@ -1503,24 +1519,24 @@ def get_manipulator(opts, klass, extra_methods, add=False, change=False):
man.save = curry(manipulator_save, opts, klass, add, change)
man.get_related_objects = curry(manipulator_get_related_objects, opts, klass, add, change)
man.flatten_data = curry(manipulator_flatten_data, opts, klass, add, change)
for field_name_list in opts.unique_together:
setattr(man, 'isUnique%s' % '_'.join(field_name_list), curry(manipulator_validator_unique_together, field_name_list, opts))
for f in opts.fields:
if f.unique_for_date:
setattr(man, 'isUnique%sFor%s' % (f.name, f.unique_for_date), curry(manipulator_validator_unique_for_date, f, opts.get_field(f.unique_for_date), opts, 'date'))
if f.unique_for_month:
setattr(man, 'isUnique%sFor%s' % (f.name, f.unique_for_month), curry(manipulator_validator_unique_for_date, f, opts.get_field(f.unique_for_month), opts, 'month'))
if f.unique_for_year:
setattr(man, 'isUnique%sFor%s' % (f.name, f.unique_for_year), curry(manipulator_validator_unique_for_date, f, opts.get_field(f.unique_for_year), opts, 'year'))
for k, v in extra_methods.items():
setattr(man, k, v)
return man
class AutomaticManipulator(formfields.Manipulator):
def __classinit__(cls, model):
def classinit(cls, model):
cls.model = model
cls.manager = model._default_manager
__classinit__ = classmethod(__classinit__)
cls.opts = model._meta
for field_name_list in cls.opts.unique_together:
setattr(cls, 'isUnique%s' % '_'.join(field_name_list), curry(manipulator_validator_unique_together, field_name_list, opts))
for f in cls.opts.fields:
if f.unique_for_date:
setattr(man, 'isUnique%sFor%s' % (f.name, f.unique_for_date), curry(manipulator_validator_unique_for_date, f, opts.get_field(f.unique_for_date), opts, 'date'))
if f.unique_for_month:
setattr(man, 'isUnique%sFor%s' % (f.name, f.unique_for_month), curry(manipulator_validator_unique_for_date, f, opts.get_field(f.unique_for_month), opts, 'month'))
if f.unique_for_year:
setattr(man, 'isUnique%sFor%s' % (f.name, f.unique_for_year), curry(manipulator_validator_unique_for_date, f, opts.get_field(f.unique_for_year), opts, 'year'))
classinit = classmethod(classinit)
def __init__(self, follow=None):
self.follow = self.model._meta.get_follow(follow)
@ -1535,31 +1551,179 @@ class AutomaticManipulator(formfields.Manipulator):
if self.follow.get(f.name, False):
fol = self.follow[f.name]
self.fields.extend(f.get_manipulator_fields(opts, self, change, fol))
self.original_object = None
def save(self):
pass
def save(self, new_data):
add, change, opts, klass = self.add, self.change, self.opts, self.model
# TODO: big cleanup when core fields go -> use recursive manipulators.
from django.utils.datastructures import DotExpandedDict
params = {}
for f in opts.fields:
# Fields with auto_now_add should keep their original value in the change stage.
auto_now_add = change and getattr(f, 'auto_now_add', False)
if self.follow.get(f.name, None) and not auto_now_add:
param = f.get_manipulator_new_data(new_data)
else:
if change:
param = getattr(self.original_object, f.attname)
else:
param = f.get_default()
params[f.attname] = param
if change:
params[opts.pk.attname] = self.obj_key
# First, save the basic object itself.
new_object = klass(**params)
new_object.save()
# Now that the object's been saved, save any uploaded files.
for f in opts.fields:
if isinstance(f, FileField):
f.save_file(new_data, new_object, change and self.original_object or None, change, rel=False)
# Calculate which primary fields have changed.
if change:
self.fields_added, self.fields_changed, self.fields_deleted = [], [], []
for f in opts.fields:
if not f.primary_key and str(getattr(self.original_object, f.attname)) != str(getattr(new_object, f.attname)):
self.fields_changed.append(f.verbose_name)
# Save many-to-many objects. Example: Poll.set_sites()
for f in opts.many_to_many:
if self.follow.get(f.name, None):
if not f.rel.edit_inline:
if f.rel.raw_id_admin:
new_vals = new_data.get(f.name, ())
else:
new_vals = new_data.getlist(f.name)
was_changed = getattr(new_object, 'set_%s' % f.name)(new_vals)
if change and was_changed:
self.fields_changed.append(f.verbose_name)
expanded_data = DotExpandedDict(dict(new_data))
# Save many-to-one objects. Example: Add the Choice objects for a Poll.
for related in opts.get_all_related_objects():
# Create obj_list, which is a DotExpandedDict such as this:
# [('0', {'id': ['940'], 'choice': ['This is the first choice']}),
# ('1', {'id': ['941'], 'choice': ['This is the second choice']}),
# ('2', {'id': [''], 'choice': ['']})]
child_follow = self.follow.get(related.name, None)
if child_follow:
obj_list = expanded_data[related.var_name].items()
obj_list.sort(lambda x, y: cmp(int(x[0]), int(y[0])))
params = {}
# For each related item...
for _, rel_new_data in obj_list:
# Keep track of which core=True fields were provided.
# If all core fields were given, the related object will be saved.
# If none of the core fields were given, the object will be deleted.
# If some, but not all, of the fields were given, the validator would
# have caught that.
all_cores_given, all_cores_blank = True, True
# Get a reference to the old object. We'll use it to compare the
# old to the new, to see which fields have changed.
old_rel_obj = None
if change:
if rel_new_data[related.opts.pk.name][0]:
try:
old_rel_obj = getattr(self.original_object, 'get_%s' % related.get_method_name_part() )(**{'%s__exact' % related.opts.pk.name: rel_new_data[related.opts.pk.attname][0]})
except ObjectDoesNotExist:
pass
for f in related.opts.fields:
if f.core and not isinstance(f, FileField) and f.get_manipulator_new_data(rel_new_data, rel=True) in (None, ''):
all_cores_given = False
elif f.core and not isinstance(f, FileField) and f.get_manipulator_new_data(rel_new_data, rel=True) not in (None, ''):
all_cores_blank = False
# If this field isn't editable, give it the same value it had
# previously, according to the given ID. If the ID wasn't
# given, use a default value. FileFields are also a special
# case, because they'll be dealt with later.
if f == related.field:
param = getattr(new_object, related.field.rel.field_name)
elif add and isinstance(f, AutoField):
param = None
elif change and (isinstance(f, FileField) or not child_follow.get(f.name, None)):
if old_rel_obj:
param = getattr(old_rel_obj, f.column)
else:
param = f.get_default()
else:
param = f.get_manipulator_new_data(rel_new_data, rel=True)
if param != None:
params[f.attname] = param
# Create the related item.
new_rel_obj = related.opts.get_model_module().Klass(**params)
# If all the core fields were provided (non-empty), save the item.
if all_cores_given:
new_rel_obj.save()
# Save any uploaded files.
for f in related.opts.fields:
if child_follow.get(f.name, None):
if isinstance(f, FileField) and rel_new_data.get(f.name, False):
f.save_file(rel_new_data, new_rel_obj, change and old_rel_obj or None, old_rel_obj is not None, rel=True)
# Calculate whether any fields have changed.
if change:
if not old_rel_obj: # This object didn't exist before.
self.fields_added.append('%s "%s"' % (related.opts.verbose_name, new_rel_obj))
else:
for f in related.opts.fields:
if not f.primary_key and f != related.field and str(getattr(old_rel_obj, f.attname)) != str(getattr(new_rel_obj, f.attname)):
self.fields_changed.append('%s for %s "%s"' % (f.verbose_name, related.opts.verbose_name, new_rel_obj))
# Save many-to-many objects.
for f in related.opts.many_to_many:
if child_follow.get(f.name, None) and not f.rel.edit_inline:
was_changed = getattr(new_rel_obj, 'set_%s' % f.name)(rel_new_data[f.attname])
if change and was_changed:
self.fields_changed.append('%s for %s "%s"' % (f.verbose_name, related.opts.verbose_name, new_rel_obj))
# If, in the change stage, all of the core fields were blank and
# the primary key (ID) was provided, delete the item.
if change and all_cores_blank and old_rel_obj:
new_rel_obj.delete()
self.fields_deleted.append('%s "%s"' % (related.opts.verbose_name, old_rel_obj))
# Save the order, if applicable.
if change and opts.get_ordered_objects():
order = new_data['order_'] and map(int, new_data['order_'].split(',')) or []
for rel_opts in opts.get_ordered_objects():
getattr(new_object, 'set_%s_order' % rel_opts.object_name.lower())(order)
return new_object
def get_related_objects(opts, klass, add, change, self):
return opts.get_followed_related_objects(self.follow)
def flatten_data(opts, klass, add, change, self):
new_data = {}
obj = change and self.original_object or None
for f in opts.get_data_holders(self.follow):
fol = self.follow.get(f.name)
new_data.update(f.flatten_data(fol, obj))
new_data.update(f.flatten_data(fol, self.original_object))
return new_data
class ModelAddManipulator(AutomaticManipulator):
pass
change = False
add = True
class ModelSaveManipulator(AutomaticManipulator):
class ModelChangeManipulator(AutomaticManipulator):
change = False
add = True
def __init__(self, obj_key=None, follow=None):
assert obj_key is not None, "ChangeManipulator.__init__() must be passed obj_key parameter."
self.obj_key = obj_key
try:
self.original_object = self.manager.get_object(pk=obj_key)
original_object = self.manager.get_object(pk=obj_key)
except ObjectDoesNotExist:
# If the object doesn't exist, this might be a manipulator for a
# one-to-one related object that hasn't created its subobject yet.
@ -1574,202 +1738,203 @@ class ModelSaveManipulator(AutomaticManipulator):
_ = opts.one_to_one_field.rel.to._meta.get_model_module().get_object(**lookup_kwargs)
params = dict([(f.attname, f.get_default()) for f in opts.fields])
params[opts.pk.attname] = obj_key
self.original_object = opts.get_model_module().Klass(**params)
original_object = opts.get_model_module().Klass(**params)
else:
raise
super(ModelSaveManipulator, self).__init__(self, follow=follow)
self.original_object = original_object
if opts.get_ordered_objects():
self.fields.append(formfields.CommaSeparatedIntegerField(field_name="order_"))
def manipulator_init(opts, add, change, self, obj_key=None, follow=None):
self.follow = opts.get_follow(follow)
#def manipulator_init(opts, add, change, self, obj_key=None, follow=None):
# self.follow = opts.get_follow(follow)
#
# if change:
# assert obj_key is not None, "ChangeManipulator.__init__() must be passed obj_key parameter."
# self.obj_key = obj_key
# try:
# self.original_object = opts.get_model_module().get_object(pk=obj_key)
# except ObjectDoesNotExist:
# # If the object doesn't exist, this might be a manipulator for a
# # one-to-one related object that hasn't created its subobject yet.
# # For example, this might be a Restaurant for a Place that doesn't
# # yet have restaurant information.
# if opts.one_to_one_field:
# # Sanity check -- Make sure the "parent" object exists.
# # For example, make sure the Place exists for the Restaurant.
# # Let the ObjectDoesNotExist exception propogate up.
# lookup_kwargs = opts.one_to_one_field.rel.limit_choices_to
# lookup_kwargs['%s__exact' % opts.one_to_one_field.rel.field_name] = obj_key
# _ = opts.one_to_one_field.rel.to._meta.get_model_module().get_object(**lookup_kwargs)
# params = dict([(f.attname, f.get_default()) for f in opts.fields])
# params[opts.pk.attname] = obj_key
# self.original_object = opts.get_model_module().Klass(**params)
# else:
# raise
# self.fields = []
#
# for f in opts.fields + opts.many_to_many:
# if self.follow.get(f.name, False):
# self.fields.extend(f.get_manipulator_fields(opts, self, change))
#
# # Add fields for related objects.
# for f in opts.get_all_related_objects():
# if self.follow.get(f.name, False):
# fol = self.follow[f.name]
# self.fields.extend(f.get_manipulator_fields(opts, self, change, fol))
#
# # Add field for ordering.
# if change and opts.get_ordered_objects():
# self.fields.append(formfields.CommaSeparatedIntegerField(field_name="order_"))
if change:
assert obj_key is not None, "ChangeManipulator.__init__() must be passed obj_key parameter."
self.obj_key = obj_key
try:
self.original_object = opts.get_model_module().get_object(pk=obj_key)
except ObjectDoesNotExist:
# If the object doesn't exist, this might be a manipulator for a
# one-to-one related object that hasn't created its subobject yet.
# For example, this might be a Restaurant for a Place that doesn't
# yet have restaurant information.
if opts.one_to_one_field:
# Sanity check -- Make sure the "parent" object exists.
# For example, make sure the Place exists for the Restaurant.
# Let the ObjectDoesNotExist exception propogate up.
lookup_kwargs = opts.one_to_one_field.rel.limit_choices_to
lookup_kwargs['%s__exact' % opts.one_to_one_field.rel.field_name] = obj_key
_ = opts.one_to_one_field.rel.to._meta.get_model_module().get_object(**lookup_kwargs)
params = dict([(f.attname, f.get_default()) for f in opts.fields])
params[opts.pk.attname] = obj_key
self.original_object = opts.get_model_module().Klass(**params)
else:
raise
self.fields = []
for f in opts.fields + opts.many_to_many:
if self.follow.get(f.name, False):
self.fields.extend(f.get_manipulator_fields(opts, self, change))
# Add fields for related objects.
for f in opts.get_all_related_objects():
if self.follow.get(f.name, False):
fol = self.follow[f.name]
self.fields.extend(f.get_manipulator_fields(opts, self, change, fol))
# Add field for ordering.
if change and opts.get_ordered_objects():
self.fields.append(formfields.CommaSeparatedIntegerField(field_name="order_"))
def manipulator_save(opts, klass, add, change, self, new_data):
# TODO: big cleanup when core fields go -> use recursive manipulators.
from django.utils.datastructures import DotExpandedDict
params = {}
for f in opts.fields:
# Fields with auto_now_add should keep their original value in the change stage.
auto_now_add = change and getattr(f, 'auto_now_add', False)
if self.follow.get(f.name, None) and not auto_now_add:
param = f.get_manipulator_new_data(new_data)
else:
if change:
param = getattr(self.original_object, f.attname)
else:
param = f.get_default()
params[f.attname] = param
if change:
params[opts.pk.attname] = self.obj_key
# First, save the basic object itself.
new_object = klass(**params)
new_object.save()
# Now that the object's been saved, save any uploaded files.
for f in opts.fields:
if isinstance(f, FileField):
f.save_file(new_data, new_object, change and self.original_object or None, change, rel=False)
# Calculate which primary fields have changed.
if change:
self.fields_added, self.fields_changed, self.fields_deleted = [], [], []
for f in opts.fields:
if not f.primary_key and str(getattr(self.original_object, f.attname)) != str(getattr(new_object, f.attname)):
self.fields_changed.append(f.verbose_name)
# Save many-to-many objects. Example: Poll.set_sites()
for f in opts.many_to_many:
if self.follow.get(f.name, None):
if not f.rel.edit_inline:
if f.rel.raw_id_admin:
new_vals = new_data.get(f.name, ())
else:
new_vals = new_data.getlist(f.name)
was_changed = getattr(new_object, 'set_%s' % f.name)(new_vals)
if change and was_changed:
self.fields_changed.append(f.verbose_name)
expanded_data = DotExpandedDict(dict(new_data))
# Save many-to-one objects. Example: Add the Choice objects for a Poll.
for related in opts.get_all_related_objects():
# Create obj_list, which is a DotExpandedDict such as this:
# [('0', {'id': ['940'], 'choice': ['This is the first choice']}),
# ('1', {'id': ['941'], 'choice': ['This is the second choice']}),
# ('2', {'id': [''], 'choice': ['']})]
child_follow = self.follow.get(related.name, None)
if child_follow:
obj_list = expanded_data[related.var_name].items()
obj_list.sort(lambda x, y: cmp(int(x[0]), int(y[0])))
params = {}
# For each related item...
for _, rel_new_data in obj_list:
# Keep track of which core=True fields were provided.
# If all core fields were given, the related object will be saved.
# If none of the core fields were given, the object will be deleted.
# If some, but not all, of the fields were given, the validator would
# have caught that.
all_cores_given, all_cores_blank = True, True
# Get a reference to the old object. We'll use it to compare the
# old to the new, to see which fields have changed.
old_rel_obj = None
if change:
if rel_new_data[related.opts.pk.name][0]:
try:
old_rel_obj = getattr(self.original_object, 'get_%s' % related.get_method_name_part() )(**{'%s__exact' % related.opts.pk.name: rel_new_data[related.opts.pk.attname][0]})
except ObjectDoesNotExist:
pass
for f in related.opts.fields:
if f.core and not isinstance(f, FileField) and f.get_manipulator_new_data(rel_new_data, rel=True) in (None, ''):
all_cores_given = False
elif f.core and not isinstance(f, FileField) and f.get_manipulator_new_data(rel_new_data, rel=True) not in (None, ''):
all_cores_blank = False
# If this field isn't editable, give it the same value it had
# previously, according to the given ID. If the ID wasn't
# given, use a default value. FileFields are also a special
# case, because they'll be dealt with later.
if f == related.field:
param = getattr(new_object, related.field.rel.field_name)
elif add and isinstance(f, AutoField):
param = None
elif change and (isinstance(f, FileField) or not child_follow.get(f.name, None)):
if old_rel_obj:
param = getattr(old_rel_obj, f.column)
else:
param = f.get_default()
else:
param = f.get_manipulator_new_data(rel_new_data, rel=True)
if param != None:
params[f.attname] = param
# Create the related item.
new_rel_obj = related.opts.get_model_module().Klass(**params)
# If all the core fields were provided (non-empty), save the item.
if all_cores_given:
new_rel_obj.save()
# Save any uploaded files.
for f in related.opts.fields:
if child_follow.get(f.name, None):
if isinstance(f, FileField) and rel_new_data.get(f.name, False):
f.save_file(rel_new_data, new_rel_obj, change and old_rel_obj or None, old_rel_obj is not None, rel=True)
# Calculate whether any fields have changed.
if change:
if not old_rel_obj: # This object didn't exist before.
self.fields_added.append('%s "%s"' % (related.opts.verbose_name, new_rel_obj))
else:
for f in related.opts.fields:
if not f.primary_key and f != related.field and str(getattr(old_rel_obj, f.attname)) != str(getattr(new_rel_obj, f.attname)):
self.fields_changed.append('%s for %s "%s"' % (f.verbose_name, related.opts.verbose_name, new_rel_obj))
# Save many-to-many objects.
for f in related.opts.many_to_many:
if child_follow.get(f.name, None) and not f.rel.edit_inline:
was_changed = getattr(new_rel_obj, 'set_%s' % f.name)(rel_new_data[f.attname])
if change and was_changed:
self.fields_changed.append('%s for %s "%s"' % (f.verbose_name, related.opts.verbose_name, new_rel_obj))
# If, in the change stage, all of the core fields were blank and
# the primary key (ID) was provided, delete the item.
if change and all_cores_blank and old_rel_obj:
new_rel_obj.delete()
self.fields_deleted.append('%s "%s"' % (related.opts.verbose_name, old_rel_obj))
# Save the order, if applicable.
if change and opts.get_ordered_objects():
order = new_data['order_'] and map(int, new_data['order_'].split(',')) or []
for rel_opts in opts.get_ordered_objects():
getattr(new_object, 'set_%s_order' % rel_opts.object_name.lower())(order)
return new_object
#def manipulator_save(opts, klass, add, change, self, new_data):
# # TODO: big cleanup when core fields go -> use recursive manipulators.
# from django.utils.datastructures import DotExpandedDict
# params = {}
# for f in opts.fields:
# # Fields with auto_now_add should keep their original value in the change stage.
# auto_now_add = change and getattr(f, 'auto_now_add', False)
# if self.follow.get(f.name, None) and not auto_now_add:
# param = f.get_manipulator_new_data(new_data)
# else:
# if change:
# param = getattr(self.original_object, f.attname)
# else:
# param = f.get_default()
# params[f.attname] = param
#
# if change:
# params[opts.pk.attname] = self.obj_key
#
# # First, save the basic object itself.
# new_object = klass(**params)
# new_object.save()
#
# # Now that the object's been saved, save any uploaded files.
# for f in opts.fields:
# if isinstance(f, FileField):
# f.save_file(new_data, new_object, change and self.original_object or None, change, rel=False)
#
# # Calculate which primary fields have changed.
# if change:
# self.fields_added, self.fields_changed, self.fields_deleted = [], [], []
# for f in opts.fields:
# if not f.primary_key and str(getattr(self.original_object, f.attname)) != str(getattr(new_object, f.attname)):
# self.fields_changed.append(f.verbose_name)
#
# # Save many-to-many objects. Example: Poll.set_sites()
# for f in opts.many_to_many:
# if self.follow.get(f.name, None):
# if not f.rel.edit_inline:
# if f.rel.raw_id_admin:
# new_vals = new_data.get(f.name, ())
# else:
# new_vals = new_data.getlist(f.name)
# was_changed = getattr(new_object, 'set_%s' % f.name)(new_vals)
# if change and was_changed:
# self.fields_changed.append(f.verbose_name)
#
# expanded_data = DotExpandedDict(dict(new_data))
# # Save many-to-one objects. Example: Add the Choice objects for a Poll.
# for related in opts.get_all_related_objects():
# # Create obj_list, which is a DotExpandedDict such as this:
# # [('0', {'id': ['940'], 'choice': ['This is the first choice']}),
# # ('1', {'id': ['941'], 'choice': ['This is the second choice']}),
# # ('2', {'id': [''], 'choice': ['']})]
# child_follow = self.follow.get(related.name, None)
#
# if child_follow:
# obj_list = expanded_data[related.var_name].items()
# obj_list.sort(lambda x, y: cmp(int(x[0]), int(y[0])))
# params = {}
#
# # For each related item...
# for _, rel_new_data in obj_list:
#
# # Keep track of which core=True fields were provided.
# # If all core fields were given, the related object will be saved.
# # If none of the core fields were given, the object will be deleted.
# # If some, but not all, of the fields were given, the validator would
# # have caught that.
# all_cores_given, all_cores_blank = True, True
#
# # Get a reference to the old object. We'll use it to compare the
# # old to the new, to see which fields have changed.
# old_rel_obj = None
# if change:
# if rel_new_data[related.opts.pk.name][0]:
# try:
# old_rel_obj = getattr(self.original_object, 'get_%s' % related.get_method_name_part() )(**{'%s__exact' % related.opts.pk.name: rel_new_data[related.opts.pk.attname][0]})
# except ObjectDoesNotExist:
# pass
#
# for f in related.opts.fields:
# if f.core and not isinstance(f, FileField) and f.get_manipulator_new_data(rel_new_data, rel=True) in (None, ''):
# all_cores_given = False
# elif f.core and not isinstance(f, FileField) and f.get_manipulator_new_data(rel_new_data, rel=True) not in (None, ''):
# all_cores_blank = False
# # If this field isn't editable, give it the same value it had
# # previously, according to the given ID. If the ID wasn't
# # given, use a default value. FileFields are also a special
# # case, because they'll be dealt with later.
#
# if f == related.field:
# param = getattr(new_object, related.field.rel.field_name)
# elif add and isinstance(f, AutoField):
# param = None
# elif change and (isinstance(f, FileField) or not child_follow.get(f.name, None)):
# if old_rel_obj:
# param = getattr(old_rel_obj, f.column)
# else:
# param = f.get_default()
# else:
# param = f.get_manipulator_new_data(rel_new_data, rel=True)
# if param != None:
# params[f.attname] = param
#
# # Create the related item.
# new_rel_obj = related.opts.get_model_module().Klass(**params)
#
# # If all the core fields were provided (non-empty), save the item.
# if all_cores_given:
# new_rel_obj.save()
#
# # Save any uploaded files.
# for f in related.opts.fields:
# if child_follow.get(f.name, None):
# if isinstance(f, FileField) and rel_new_data.get(f.name, False):
# f.save_file(rel_new_data, new_rel_obj, change and old_rel_obj or None, old_rel_obj is not None, rel=True)
#
# # Calculate whether any fields have changed.
# if change:
# if not old_rel_obj: # This object didn't exist before.
# self.fields_added.append('%s "%s"' % (related.opts.verbose_name, new_rel_obj))
# else:
# for f in related.opts.fields:
# if not f.primary_key and f != related.field and str(getattr(old_rel_obj, f.attname)) != str(getattr(new_rel_obj, f.attname)):
# self.fields_changed.append('%s for %s "%s"' % (f.verbose_name, related.opts.verbose_name, new_rel_obj))
#
# # Save many-to-many objects.
# for f in related.opts.many_to_many:
# if child_follow.get(f.name, None) and not f.rel.edit_inline:
# was_changed = getattr(new_rel_obj, 'set_%s' % f.name)(rel_new_data[f.attname])
# if change and was_changed:
# self.fields_changed.append('%s for %s "%s"' % (f.verbose_name, related.opts.verbose_name, new_rel_obj))
#
# # If, in the change stage, all of the core fields were blank and
# # the primary key (ID) was provided, delete the item.
# if change and all_cores_blank and old_rel_obj:
# new_rel_obj.delete()
# self.fields_deleted.append('%s "%s"' % (related.opts.verbose_name, old_rel_obj))
#
# # Save the order, if applicable.
# if change and opts.get_ordered_objects():
# order = new_data['order_'] and map(int, new_data['order_'].split(',')) or []
# for rel_opts in opts.get_ordered_objects():
# getattr(new_object, 'set_%s_order' % rel_opts.object_name.lower())(order)
# return new_object