def upload_photo(user, photo_from_object, dmid=None):
"""
:param user:
:param dmid:
:param photo_from_object:
:return:
"""
if not user.is_validated:
raise WLException(
410, "User's validation does not passed, cannot publish.")
# user exits
photo = ProductDemandPhoto()
if dmid is not None:
try:
demand = ProductDemand.objects.get(id=dmid)
if demand.uid != user:
raise Error404("No such demand")
except ProductDemand.DoesNotExist:
raise Error404("No such demand")
photo.dmid = demand
photo.inuse = True
else:
photo.inuse = False
form = UploadPhotoForm(files=photo_from_object, instance=photo)
# TODO: photo snapshot editing
if form.is_valid():
form.save()
return photo.id
else:
raise Error403(str(form.errors))
def get_banner(count):
# type: (int) -> list(Banner)
try:
photos = Banner.objects.filter(in_use=True).order_by('-id')[:3]
return photos
except Banner.DoesNotExist:
raise Error404("No banner")
def edit_demand(user, id, demand, photo_ids=None):
"""
:param user:
:param id:
:param demand:
:param photo_ids:
:return:
"""
try:
demand_object = ProductDemand.objects.get(id=id, uid=user, in_use=True)
except ProductDemand.DoesNotExist:
raise Error404("No such demand")
update_instance_from_dict(instance=demand_object, dic=demand, save=False)
if demand_object.min_quantity > demand_object.quantity:
raise Error400("min_quantity must equal to or less than quantity")
# TODO: check
with transaction.atomic():
demand_object.save()
if photo_ids is not None:
append_photo(demand_object, photo_ids, True)
return id
def get_popular_demand(page, **kw):
"""
#TODO: choose one from role and user_sid
:param role:
:param user_sid:
:param page: start from one
:return:
"""
if 'role' in kw.keys():
number_objects = ProductDemand.objects.filter(
in_use=True).user_demand.objects.filter(in_use=True,
role=kw['role'])
elif 'user_sid' in kw.keys():
user_role = ProductDemand.objects.filter(
uid=kw['user_sid']).user_demand.objects.filter(in_use=True).role
number_objects = ProductDemand.objects.filter(
in_use=True).user_demand.objects.filter(in_use=True,
role=user_role)
# return sliced single page
if page < 1 or page > number_objects.count():
raise Error404('Page number exceeds range')
else:
startPage = page * page_size
endPage = (page + 1) * page_size
return ProductDemand.objects.filter(in_use=True)[startPage:endPage]
def get_specified_photo(id):
"""
:param id:
:return:
"""
try:
return ProductDemandPhoto.objects.get(id=id).demand_photo.path
except ProductDemandPhoto.DoesNotExist:
raise Error404("No such photo.")
def get_my_demand(user_sid, page):
"""
TODO: using user_sid to get specified page
:param user_sid:
:param page:
:return:
"""
# check user
user = sid_getuser(user_sid)
if user is None:
raise Error404("user_id do not exist")
# page_size = 3 # number of items per page
page = int(page)
# return sliced single page
if page < 1:
raise Error404('Page number must be positive int')
else:
return ProductDemand.objects.filter(
in_use=True)[(page - 1) * page_size:page * page_size]
def shut_demand(user, id):
"""
:param user:
:param id:
:return:
"""
try:
demand_object = ProductDemand.objects.get(id=id, uid=user, in_use=True)
demand_object.match = False
demand_object.save()
except ProductDemand.DoesNotExist:
raise Error404("No such demand")
def delete_photo(user, id):
"""
:param user_sid:
:param id:
:return:
"""
# check whether photo id exists
photo_to_delete = user.demand_photo.filter(inuse=True, id=id)
if photo_to_delete.is_valid():
photo_to_delete.inuse = False
photo_to_delete.save()
else:
raise Error404('user_sid not found')
def get_matched_demand(user_sid, id, page):
"""
TODO: DemandMatchingScore not set
:param user_sid:
:param id:
:param page:
:return:
"""
# check user
user = sid_getuser(user_sid)
if user is None:
raise Error404("user_id do not exist")
# page_size = 3 # number of items per page
page = int(page)
# TODO: match the specific id
demand = ProductDemand.objects.filter(id=id)
# return sliced single page
if page < 1:
raise Error404('Page number must be positive int')
else:
return ProductDemand.objects.filter(
in_use=True)[(page - 1) * page_size:page * page_size]
def get_demand_detail(user, id):
"""
:param user:
:param id:
:return:
"""
try:
demand = ProductDemand.objects.select_related('uid__user_validate',
'qid__t3id__t2id__t1id',
'aid__cid__pid', 'pmid',
'wcid').get(in_use=True,
id=id)
except ProductDemand.DoesNotExist:
raise Error404("No such demand.")
return demand
def delete_photo(user, id):
"""
:param user_sid:
:param id:
:return:
"""
# check whether photo id exists
try:
photo_to_delete = ProductDemandPhoto.objects.get(id=id, inuse=True)
if photo_to_delete.dmid.uid != user:
raise ProductDemandPhoto.DoesNotExist
except ProductDemandPhoto.DoesNotExist:
raise Error404("No such photo")
photo_to_delete.dmid = None
photo_to_delete.inuse = False
photo_to_delete.save()
def get_customed_demand(user_sid, id):
"""
:param user_sid:
:param id:
:param page:
:return:
"""
# check user
user = sid_getuser(user_sid)
if user is None:
raise Error404("user_id do not exist")
# TODO: set the page parameter
customed_demand = ProductDemand.objects.filter(in_use=True, id=id)
return customed_demand, customed_demand.demand_photo.object.filter(
in_use=True)
def get_matched_demand(user, id, page, order, asc, count_per_page):
"""
:param user:
:param id:
:param page:
:param order:
:param count_per_page:
:return:
"""
def confirm_satisfied(self, other):
# type: (ProductDemand, ProductDemand) -> bool
return self.quantity_metric() > other.min_quantity_metric()
def match_key(m_obj):
# type: (ProductDemand) -> object
if order == match_order_choice.SCORE:
return demand.match_score(m_obj)["score_overall"]
elif order == match_order_choice.QUANTITY:
return m_obj.quantity_left()
elif order == match_order_choice.PRICE:
return m_obj.price_metric().scaled_value()
try:
demand = ProductDemand.objects.select_related('uid__user_validate',
'qid__t3id__t2id__t1id',
'aid__cid__pid', 'pmid',
'wcid').get(in_use=True,
id=id,
uid=user)
except ProductDemand.DoesNotExist:
raise Error404("No such demand.")
match_queryset = ProductDemand.objects.select_related(
'uid__user_validate', 'qid__t3id__t2id__t1id', 'aid__cid__pid', 'pmid',
'wcid').filter(
in_use=True, # Must be in use
match=True,
qid=demand.qid,
aid__cid__pid=demand.aid.cid.pid).exclude(
uid__role=user.role # Exclude same role
).filter(end_time__gt=now(), )
# FIXME: Here we got a efficient issue, Every time user use this api, it will query the full set
# of matched queryset. We must figure out how to fetch it by page, or ... cache it.
matches = match_queryset.all()
matches_list = [m for m in matches if confirm_satisfied(demand, m)]
matches_list.sort(key=match_key, reverse=not asc)
st, ed, n_pages = get_page_info_list(
matches_list,
count_per_page,
page,
index_error_excepiton=Error400("Page out of range"))
# Set the match field
if not demand.match:
demand.match = True
demand.save()
# return sliced single page
return demand, matches_list[st:ed], n_pages