def match_orders(sec, buysell):
"""Match orders in cross"""
# Get buy and sell lists
b = Order.query(Order.security == sec, Order.buysell == 'Buy', Order.active == True, ancestor=sec.key).order(-Order.price, Order.timestamp)
s = Order.query(Order.security == sec, Order.buysell == 'Sell', Order.active == True, ancestor=sec.key).order(Order.price, Order.timestamp)
b = list(b)
s = list(s)
# Match orders until market uncrosses
bn = 0
sn = 0
while(1):
if bn + 1 > len(b):
break
if sn + 1 > len(s):
break
if b[bn].price >= s[sn].price:
t = Trade()
t.timestamp = datetime.utcnow()
t.buy_user = b[bn].user
t.sell_user = s[sn].user
t.security = b[bn].security
if buysell == "Buy":
t.price = s[sn].price
else:
t.price = b[bn].price
b[bn] = b[bn].key.get()
s[sn] = s[sn].key.get()
b_ptf = Portfolio.query(Portfolio.user == b[bn].user).get()
s_ptf = Portfolio.query(Portfolio.user == s[sn].user).get()
if b[bn].volume > s[sn].volume:
t.volume = s[sn].volume
b[bn].volume += -s[sn].volume
s[sn].active = False
b_ptf.points += s[sn].volume
s_ptf.points += s[sn].volume
b[bn].put()
s[sn].put()
sn += 1
elif b[bn].volume < s[sn].volume:
t.volume = b[bn].volume
s[sn].volume += -b[bn].volume
b[bn].active = False
b_ptf.points += b[bn].volume
s_ptf.points += b[bn].volume
b[bn].put()
s[sn].put()
bn += 1
elif b[bn].volume == s[sn].volume:
t.volume = b[bn].volume
b[bn].active = False
s[sn].active = False
b_ptf.points += b[bn].volume
s_ptf.points += b[bn].volume
b[bn].put()
s[sn].put()
bn += 1
sn += 1
b_ptf.put()
s_ptf.put()
t.put()
flash(u'Trade %s successfully completed.' % t.key.id(), 'success')
continue
break
def trade_add(request):
goods_top = Trade.objects.values('goods__id','goods__title').annotate(goods_count=Count('goods')).order_by('-goods_count')[:10]
price1 = 0
results = []
if request.method == 'POST': # If the form has been submitted...
form = TradeForm(request.POST) # A form bound to the POST data
if form.is_valid(): # All validation rules pass
# Process the data in form.cleaned_data
# ...
#return HttpResponseRedirect('/thanks/') # Redirect after POST
#results = GClass.objects.filter(title__icontains=form.cleaned_data['goodstitle'])
isOldTrade = False
if int(form.cleaned_data["trade_pk"]) > 0:
isOldTrade = True
shop1 = None
if int(form.cleaned_data["shop_pk"]) > 0:
shop1 = Shop.objects.get(pk=form.cleaned_data["shop_pk"])
else:
shop1 = Shop(title=form.cleaned_data["shop"], type='mag')
shop1.save()
#gclass1 = None
#if int(form.cleaned_data["gclass_pk"]) > 0:
# gclass1 = GClass.objects.get(pk=form.cleaned_data["gclass_pk"])
#else:
# gclass1 = GClass(title=form.cleaned_data["gclass"], section=GSection.objects.get(pk=1)) #TODO GSection
# gclass1.save()
goods1 = None
if int(form.cleaned_data["gtitle_pk"]) > 0:
goods1 = Goods.objects.get(pk=form.cleaned_data["gtitle_pk"])
goods1.title = form.cleaned_data["gtitle"]
goods1.ed = form.cleaned_data["ed"]
#goods1.gclass = gclass1
goods1.save()
else:
goods1 = Goods(title=form.cleaned_data["gtitle"], ed=form.cleaned_data["ed"])
goods1.save()
price1 = "%.2f" % ( float(form.cleaned_data['cost']) / float(form.cleaned_data['amount']) )
if isOldTrade:
trade1 = Trade.objects.get(pk=form.cleaned_data["trade_pk"])
else:
trade1 = Trade()
trade1.user = request.user
trade1.shop = shop1
trade1.goods = goods1
trade1.time = form.cleaned_data["time"]
trade1.amount = form.cleaned_data["amount"]
trade1.price = price1
trade1.cost = form.cleaned_data["cost"]
trade1.currency = form.cleaned_data["currency"]
trade1.spytrade = form.cleaned_data["spytrade"]
trade1.save()
return HttpResponseRedirect("/")
else:
data = {'time': datetime.datetime.now, 'trade_pk': '0', 'shop_pk': '0', 'gclass_pk': '0', 'gtitle_pk': '0' }
form = TradeForm(initial=data) # An unbound form
return render_to_response('trade_add.html',
{'price': price1, 'results': results, 'form': form, 'goods_top': goods_top},
context_instance=RequestContext(request))