def db_get(self, request, model_name, pk):
"""
As part of the REST API, return a specific instance of the given model
with the given pk.
"""
# get model
try:
model = get_class_from_string(model_name)
except:
return self._db_error('Unknown model.')
# get instance
try:
qs = model.objects.filter(pk=pk)
instance = Acl.of(model).filter(request, qs)[0]
except:
return self._db_error('Unknown pk.')
# result
return {
'success': True,
'message': 'OK',
'result': model_to_dict(instance,
exclude_many_to_many=True,
json=True)
}
def test_model_to_dict_should_only_return_fields_in_the_schema(self):
self.instance.foo = 'bar'
self.instance.save()
def _model_to_dict_does_not_contain_field():
model_to_dict(self.instance)['foo']
self.assertEqual(len(model_to_dict(self.instance)), 4)
self.assertRaises(KeyError, _model_to_dict_does_not_contain_field)
def test_model_to_dict_should_return_reverse_fields_if_specified(self):
m = TestModelWithManyToMany(id=1, title='Foo')
m.save()
try:
d = model_to_dict(m, fetch_related=True)
self.assertIsInstance(d.get('pages'), QuerySet)
self.assertEqual(1, d.get('id'))
self.assertEqual('Foo', d.get('title'))
finally:
m.delete()
def db_get_all(self, request, model_name):
"""
As part of the REST API, return a list of all model instances.
"""
# get model
try:
model = get_class_from_string(model_name)
except:
return self._db_error('Unknown model.')
# get list
qs = model.objects.all()
instances = Acl.of(model).filter(request, qs)
result = [
model_to_dict(instance, exclude_many_to_many=True, json=True)
for instance in instances
]
# result
return {'success': True, 'message': 'OK', 'result': result}
def sku(self, request):
# get product
product_id = request.GET.get('pk')
product = get_object_or_404(get_product_model(), pk=product_id)
# get varieties
_varieties = Variety.objects.prefetch_related(
Prefetch('options',
queryset=VarietyOption.objects.order_by('title'))
).filter(sku=True).exclude(options=None).exclude(
style=Variety.STYLE_ATTRIBUTE).order_by('title').distinct()
skus = ProductSKU.objects.filter(product=product)
assigned_option_ids = [
a.variety_option.id
for a in VarietyAssignment.objects.select_related('variety_option')
.filter(product=product, variety_option__variety__sku=True)
]
# initial dataset currently present
initial = {}
for sku in skus:
initial[sku.pk] = sku
initial[sku.pk].errors = []
# determine barcode system
cms_settings = get_cms_settings()
barcode_system = cms_settings.get_barcode_system(product)
# create template form
form_template = ProductSKUForm()
form_template.configure(request, barcode_system)
def has_var(prefix, name):
return 'f-%s-%s' % (prefix, name) in request.POST
def get_var(prefix, name, default=None):
return request.POST.get('f-%s-%s' % (prefix, name), default)
def get_int_var(prefix, name, default=None):
return parse_int(get_var(prefix, name), default)
# construct list of variety option names
varieties = []
variety_index = {}
for variety in _varieties:
variety_index[variety.id] = {
'id': variety.id,
'title': variety.title,
'sku': variety.sku,
'options': {}
}
item = {
'id': variety.id,
'title': variety.title,
'sku': variety.sku,
'options': [],
'n_assigned_options': 0
}
for option in variety.options.all():
variety_index[variety.id].get('options')[option.id] = {
'id': option.id,
'title': option.title,
'fullTitle':
'%s: <em>%s</em>' % (variety.title, option.title)
}
item.get('options').append({
'id':
option.id,
'title':
option.title,
'assigned':
option.id in assigned_option_ids
})
if option.pk in assigned_option_ids:
item['n_assigned_options'] += 1
varieties.append(item)
# sort varieties by number of assigned options, so that varieties that
# have been assigned are at the top of the list. The rest remains sorted
# alphabetically...
varieties.sort(key=lambda x: -x.get('n_assigned_options', 0))
# validation
is_valid = True
if request.method == 'POST':
# process sku records
prefixes = request.POST.getlist('skus')
assigned_option_ids = []
skus_to_save = []
sku_code_processed = []
barcodes_processed = []
for index, prefix in enumerate(prefixes):
# extract relevant informatioin from post for
# individual combination
_id = get_var(prefix, '_id')
d = {
'enabled': get_var(prefix, 'enabled') == 'on',
'sku': get_var(prefix, 'sku'),
'barcode': get_var(prefix, 'barcode'),
'price': get_var(prefix, 'price'),
'stocklevel': get_int_var(prefix, 'stocklevel', 0)
}
# parse assigned variety options from request data
n_variety_option = 1
d['variety_options'] = []
while len(d['variety_options']) <= 16:
_name = 'vo_%d' % n_variety_option
if has_var(prefix, _name):
d['variety_options'].append(get_int_var(prefix, _name))
n_variety_option += 1
else:
break
# make sure that sku, barcode and price are None
# instead of empty
if _id == '': _id = None
if d.get('sku') == '': d['sku'] = None
if d.get('barcode') == '': d['barcode'] = None
if d.get('price') == '': d['price'] = None
# construct form based on this data and validate
form = ProductSKUForm(d)
form.configure(request, barcode_system)
# get variety options
variety_options = VarietyOption.objects.filter(
pk__in=d.get('variety_options'))
# create or edit?
sku = initial.get(_id, None)
if sku is None:
sku = ProductSKU.objects.get_by_variety_options(
product, variety_options)
# still not found? -> create new item
if sku is None:
sku = ProductSKU()
sku.product = product
# remember the sku record to be saved once we processed
# everything. We will not save anything until everything
# is considered to be valid.
skus_to_save.append(sku)
# mark any assigned variety options as selected, so that they
# indeed remain selected, even if they have actually not been
# properly assigned yet because if from errors for example
for _variety in varieties:
_options = _variety.get('options')
for _option in _options:
for _assigned_option in variety_options:
if _option.get('id') == _assigned_option.pk:
_option['assigned'] = True
break
# inject error information and keep track of error states
sku.errors = []
if form.is_valid():
# update data from from
d = form.cleaned_data
else:
for field, error in form.errors.items():
sku.errors.append({'field': field, 'error': error[0]})
is_valid = False
# copy original data or cleaned data
sku.enabled = d.get('enabled', False)
sku.sku = d.get('sku')
sku.barcode = d.get('barcode')
sku.price = d.get('price')
sku.stocklevel = d.get('stocklevel', 0)
# keep track of variety options that should be assigned due to
# SKU's that are enabled
if sku.enabled:
assigned_option_ids.extend(
[option.pk for option in variety_options])
# set variety options (saved later)
sku._variety_options = variety_options
# verify uniqueness of the SKU code
if not self._verify_sku(product, sku, sku_code_processed,
initial):
is_valid = False
# verify uniqueness of barcode
if not self._verify_barcode(product, sku, barcodes_processed,
initial):
is_valid = False
# maintain changed data in initial data set, so that all
# changes make theire way back into the view, even through
# we might not have saved changes due to errors
_id = ('idx_%d' % index) if sku.pk is None else sku.pk
initial[_id] = sku
# process if everything is valid
if request.method == 'POST' and is_valid:
# create missing option assignments
assigned_option_ids = list(
set(filter(lambda x: x is not None, assigned_option_ids)))
for option_id in assigned_option_ids:
try:
assignment = VarietyAssignment.objects.get(
product=product, variety_option__pk=option_id)
except VarietyAssignment.DoesNotExist:
VarietyAssignment.objects.create(
product=product, variety_option_id=option_id)
# remove deprecated option assignments
deprecated_assignments = VarietyAssignment.objects.select_related(
'variety_option').filter(
product=product,
variety_option__variety__sku=True).exclude(
variety_option__pk__in=assigned_option_ids)
for deprecated_assignment in deprecated_assignments:
deprecated_assignment.delete()
# save changes to sku records. Null sku, so that we would not
# collide when making updates
sku_ids_saved = []
for sku in skus_to_save:
# save product sku itself
sku._sku = sku.sku
sku.sku = None
sku.save()
sku_ids_saved.append(sku.id)
# assign and save variety options
sku.variety_options = sku._variety_options
# remove all previous SKU
deprecated_skus = ProductSKU.objects.filter(
product=product).exclude(pk__in=sku_ids_saved)
for deprecated_sku in deprecated_skus:
deprecated_sku.delete()
# apply new sku names, which is now safe to do
for sku in skus_to_save:
if request.settings.sku_is_barcode:
sku.sku = sku.barcode
else:
sku.sku = sku._sku
sku.save()
# redirect and message
if request.method == 'POST' and is_valid:
messages.add_message(
request, messages.SUCCESS,
'Product Varieties and SKUs saved for <em>%s</em>.' %
product.title)
if request.POST.get('cubane_save_and_continue') is None:
return self._redirect(request, 'index')
else:
return self._redirect(request, 'sku', product)
# materialise current initial data
_initial = {}
for _id, _sku in initial.items():
_initial[_id] = model_to_dict(_sku)
if _sku.pk is None:
_initial[_id]['variety_options'] = [
option.pk for option in _sku._variety_options
]
else:
_initial[_id]['variety_options'] = [
option.pk for option in _sku.variety_options.all()
]
_initial[_id]['errors'] = _sku.errors if hasattr(_sku,
'errors') else []
# template context
return {
'product': product,
'varieties': varieties,
'initial': to_json(_initial),
'variety_index_json': to_json(variety_index),
'form_template': form_template
}
def _model_to_dict_does_not_contain_field():
model_to_dict(self.instance)['foo']
def test_model_to_dict_should_return_correct_fields(self):
self.assertEqual(len(model_to_dict(self.instance)), 4)
def test_model_to_dict_should_return_dict(self):
self.assertIsInstance(model_to_dict(self.instance), dict)
