Upgrade to django 1.8, ++

main/views/general.py

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+# coding: utf-8
+from __future__ import unicode_literals
+
+from datetime import datetime, timedelta
+
+import settings
+from django.contrib import messages
+from django.contrib.auth.models import User
+from django.core.urlresolvers import reverse
+from django.db.models import Min
+from django.forms import formset_factory
+from django.http import HttpResponseRedirect
+from django.shortcuts import render, redirect
+from main.forms import OrderLineForm, OrderForm, DepositForm
+from main.models import Product, OrderLine, Order, Transaction
+from main.utils import users_format_js, users_with_perm
+
+
+def register(request):
+    products = Product.objects.filter(active=True)
+    cheapest_product_price = products.aggregate(Min('sale_price_int')).values()[0] or 0
+    half_a_year_ago = datetime.now() - timedelta(days=180)
+    users = User.objects.filter(profile__balance__gte=cheapest_product_price)
+    # sort users after user's last purchase time
+    users = sorted(users, key=lambda u: u.profile.last_purchase_date(), reverse=True)
+    users_js = users_format_js(users)
+
+    # multiple orderlines (one per product)
+    OrderLineFormSet = formset_factory(OrderLineForm)
+    if request.method == "POST":
+        orderform = OrderForm(request.POST)
+        formset = OrderLineFormSet(request.POST)
+
+        if formset.is_valid() and orderform.is_valid():
+            order = orderform.save(commit=False)
+
+            if order.is_external():
+                order_sum = sum([ol['amount'] * ol['unit_price_ext'] for ol in formset.cleaned_data])
+            else:
+                order_sum = sum([ol['amount'] * ol['unit_price_int'] for ol in formset.cleaned_data])
+
+            # empty order?
+            if order_sum == 0:
+                messages.error(request, 'Du har ikke valgt hva du skal kjøpe...')
+                return HttpResponseRedirect(reverse('register'))
+
+            if not order.is_external():
+                profile = order.customer.profile
+                # can she afford it?
+                if order_sum >= profile.balance:
+                    messages.error(request, '{0} {1} har ikke råd, mangler {2} kr.'.format(
+                        order.customer.first_name,
+                        order.customer.last_name,
+                        int(order_sum - profile.balance)))
+                    return HttpResponseRedirect(reverse('register'))
+                # substract order from balance
+                profile.balance -= order_sum
+                profile.save()
+
+            order.order_sum = order_sum
+            order.save()
+
+            orderlines = []
+            for ol in formset.cleaned_data:
+                if ol['amount'] > 0:
+                    product = Product.objects.get(pk=ol['product'])
+
+                    if order.is_external():
+                        unit_price = ol['unit_price_ext']
+                    else:
+                        unit_price = ol['unit_price_int']
+
+                    OrderLine.objects.create(
+                        order=order,
+                        product=product,
+                        amount=ol['amount'],
+                        unit_price=unit_price)
+
+                    product.inventory_amount -= ol['amount']
+                    product.save()
+
+                    orderlines.append("{0} {1}".format(ol['amount'], product))
+
+            if order.is_external():
+                messages.success(request, 'Ekstern kjøpte {0}.'.format(", ".join(orderlines)))
+            else:
+                messages.success(request, '{0} {1} kjøpte {2}.'.format(
+                    order.customer.first_name,
+                    order.customer.last_name,
+                    ", ".join(orderlines)
+                ))
+
+            return redirect('register')
+        else:
+            # TODO specify error(s)
+            messages.error(request, 'Skjemaet er ikke gyldig.')
+            orderform = OrderForm(request.POST)
+            formset = OrderLineFormSet(request.POST)
+    else:
+        orderform = OrderForm()
+        formset = OrderLineFormSet()
+        
+    return render(request, 'register.html', locals())
+
+
+def deposit(request):
+    users = User.objects.all().order_by('first_name', 'last_name')
+    users_js = users_format_js(users)
+    allowed_users = users_with_perm('add_transaction')
+    error_message_template = '{0} {1} kan ikke sette inn {2} kr, det overskrider maks saldo ({3} kr) med {4} kr'
+
+    # FIXME: dont need this
+    try:
+        limit_deposists = settings.BBS_LIMIT_DEPOSITS
+    except:
+        pass
+
+    if request.method == "POST":
+        form = DepositForm(request.POST)
+        if form.is_valid():
+            amount = form.cleaned_data['amount']
+            user = form.cleaned_data['user']
+            if amount + user.profile.balance > settings.BBS_SALDO_MAX and amount + user.profile.balance != 1337:
+                messages.error(request, error_message_template.format(
+                    user.first_name,
+                    user.last_name,
+                    amount,
+                    settings.BBS_SALDO_MAX,
+                    amount + user.profile.balance - settings.BBS_SALDO_MAX
+                ))
+                return HttpResponseRedirect(reverse('deposit'))
+
+            transaction = form.save()
+            profile = transaction.user.profile
+            profile.balance += transaction.amount
+            profile.save()
+
+            messages.success(request, '{0} {1} satte inn {2} kr. Ny saldo er {3}'.format(
+                transaction.user.first_name,
+                transaction.user.last_name,
+                transaction.amount,
+                profile.balance))
+            return HttpResponseRedirect(reverse('deposit'))
+        else:
+            messages.error(request, 'Skjemaet er ikke gyldig.')
+            form = DepositForm(request.POST)
+    else:
+        form = DepositForm()
+
+    return render(request, 'deposit.html', locals())
+
+
+def log(request, limit=datetime.now()-timedelta(days=2)):
+    if limit:
+        # display last two days of orders and transactions
+        orders = Order.objects.filter(created__gte=limit).order_by('-created')
+        transactions = Transaction.objects.filter(created__gte=limit).order_by('-created')
+
+        # no action in the last two days?
+        # ...then display the last 5 items
+        if len(orders) == 0:
+            orders = Order.objects.all().order_by('-created')[:5]
+
+        if len(transactions) == 0:
+            transactions = Transaction.objects.all().order_by('-created')[:5]
+    else:
+        # display everything
+        orders = Order.objects.all().order_by('-created')
+        transactions = Transaction.objects.all().order_by('-created')
+
+    return render(request, 'log.html', locals())

main/views/reports.py

@@ -0,0 +1,136 @@
+from datetime import datetime, timedelta
+from itertools import groupby
+
+from django.contrib import messages
+from django.shortcuts import render, redirect
+from main.forms import DateRangeForm, InventoryTransactionForm
+from main.models import Product, InventoryTransaction, UserProfile, Transaction, Order
+
+
+def report(request):
+    # FIXME: split this up in smaller pieces
+    datetime_now = datetime.now()
+    start_time = datetime.now() - timedelta(days=30)
+    # start of day, 1 month
+    start_time = start_time.replace(hour=0, minute=0, second=0, microsecond=0)
+    # end of day
+    end_time = datetime.now().replace(hour=23, minute=59, second=59, microsecond=999)
+
+    if request.GET.get('start_time', False) or request.GET.get('end_time', False):
+        form = DateRangeForm(request.GET)
+        if form.is_valid():
+            start_time = form.cleaned_data['start_time']
+            # end of day
+            end_time = form.cleaned_data['end_time'].replace(hour=23, minute=59, second=59, microsecond=999)
+
+    else:
+        form = DateRangeForm(initial={
+            'start_time': start_time.strftime("%Y-%m-%d"),
+            'end_time': end_time.strftime("%Y-%m-%d")
+        })
+
+    # Inventory
+    products = Product.objects\
+        .filter(transactions__created__range=[start_time, end_time])\
+        .values('name', 'transactions__unit_price', 'transactions__amount')\
+        .order_by('name')
+    # group by name and sum
+    inventory_products = {}
+    for k, g in groupby(products, lambda x: x['name']):
+        group = []
+        for el in g:
+            el['transactions__price'] = el['transactions__amount'] * el['transactions__unit_price']
+            group.append(el)
+        inventory_products.update({k: {
+            'name': k,
+            "transactions": group,
+            "transactions_sum": sum(map(lambda x: x['transactions__price'], group)),
+            "transactions_units": sum(map(lambda x: x['transactions__amount'], group))
+        }})
+
+    itrans = InventoryTransaction.objects.filter(created__range=[start_time, end_time])
+    inv_in = sum(map(lambda x: x[1].get('transactions_sum', 0), inventory_products.items()))
+
+    # out
+    out_products = Product.objects\
+        .filter(orderlines__order__created__range=[start_time, end_time])\
+        .values('name', 'orderlines__unit_price', 'orderlines__amount')\
+        .order_by('name')
+    # group by name and sum
+    for k, g in groupby(out_products, lambda x: x['name']):
+        group = []
+        for el in g:
+            el['orderlines__price'] = el['orderlines__amount'] * el['orderlines__unit_price']
+            group.append(el)
+
+        product = {
+            'name': k,
+            "orderlines": group,
+            "orderlines_sum": sum(map(lambda x: x['orderlines__price'], group)),
+            "orderlines_units": sum(map(lambda x: x['orderlines__amount'], group))
+        }
+        if k in inventory_products:
+            # add diff
+            inventory_products[k].update(product)
+        else:
+            inventory_products.update({k: product})
+
+    for p in inventory_products.items():
+            p[1]['value_diff'] = p[1].get('transactions_sum', 0) - p[1].get('orderlines_sum', 0)
+            p[1]['units_diff'] = p[1].get('transactions_units', 0) - p[1].get('orderlines_units', 0)
+
+    inv_out = sum(map(lambda x: x[1].get('orderlines_sum', 0), inventory_products.items()))
+
+    inv_diff = inv_in - inv_out
+
+    # Deposits and sales
+    saldo_profiles = sum(UserProfile.objects.all().values_list('balance', flat=True))
+    deposits = sum(Transaction.objects.all().values_list('amount', flat=True))
+    purchases = sum(Order.objects.all().values_list('order_sum', flat=True))
+    saldo = deposits - purchases
+
+    deposits_start = sum(Transaction.objects.filter(created__lt=start_time).values_list('amount', flat=True))
+    purchases_start = sum(Order.objects.filter(created__lt=start_time).values_list('order_sum', flat=True))
+    saldo_start = deposits_start - purchases_start
+
+    deposits_end = sum(Transaction.objects.filter(created__lt=end_time).values_list('amount', flat=True))
+    purchases_end = sum(Order.objects.filter(created__lt=end_time).values_list('order_sum', flat=True))
+    saldo_end = deposits_end - purchases_end
+
+    deposits_diff = deposits_end - deposits_start
+    purchases_diff = purchases_end - purchases_start
+    saldo_diff = saldo_end - saldo_start
+
+    return render(request, 'report.html', locals())
+
+
+def inventory(request):
+    products = Product.objects.all().order_by('-active', 'inventory_amount', 'name')
+    transactions = InventoryTransaction.objects.all().order_by('-created')
+    products_active = products.filter(active=True)
+    wholesale_value = sum([p.wholesale_value for p in products_active])
+    num_products = sum(products_active.values_list('inventory_amount', flat=True))
+
+    return render(request, 'inventory.html', locals())
+
+
+def inventory_add(request):
+    if request.method == "POST":
+        form = InventoryTransactionForm(data=request.POST)
+        if form.is_valid():
+            itrans = form.save(commit=False)
+            # Add amount and user, then save
+            itrans.product.inventory_amount += itrans.amount
+            itrans.user = request.user
+            itrans.product.save()
+            itrans.save()
+            messages.success(request, "Satt inn {0} stk {1}.".format(itrans.amount, itrans.product))
+            return redirect('inventory-add')
+
+        else:
+            messages.error(request, 'Feil med skjemaet, se under.')
+            form = InventoryTransactionForm(data=request.POST)
+    else:
+        form = InventoryTransactionForm()
+
+    return render(request, 'inventory_add.html', locals())

main/views/stats.py

@@ -0,0 +1,176 @@
+from __future__ import unicode_literals
+from datetime import datetime, timedelta, time
+from django.db.models import Sum, Count
+from django.http import JsonResponse
+from django.shortcuts import render, get_object_or_404
+from itertools import groupby
+
+from main.models import Product, OrderLine, Order
+
+
+def stats_list(request):
+    products = Product.objects.filter(active=True)
+
+    return render(request, 'stats.html', {'products': products})
+
+
+def serialize_product(product):
+    f_product = {}
+    for attr in Product._meta.get_all_field_names():
+        if attr in ["transactions", "orderlines", "image"]:
+            continue
+
+        if hasattr(product, attr) and product.__getattribute__(attr):
+            if type(product.__getattribute__(attr)) is datetime:
+                f_product[attr] = str(product.__getattribute__(attr))
+            else:
+                f_product[attr] = product.__getattribute__(attr)
+    return f_product
+
+
+def products_json(request, product_id=None):
+    if product_id:
+        # single
+        products = get_object_or_404(Product, pk=product_id)
+    else:
+        # many
+        products = Product.objects.filter(active=True)
+
+    if product_id:
+        f_products = serialize_product(products)
+    else:
+        f_products = [serialize_product(product) for product in products]
+
+    return JsonResponse(f_products)
+
+
+def stats_product(product):
+    # reverse lookup via order, customer
+    per_user = OrderLine.objects\
+        .filter(product=product)\
+        .values('order__customer__first_name', 'order__customer__last_name')\
+        .annotate(num=Sum('amount'))\
+        .order_by('-num')
+    f_per_user = []
+    for row in per_user:
+        if row['order__customer__first_name'] is not None:
+            who = row['order__customer__first_name'] + " " + row['order__customer__last_name']
+        else:
+            who = "Ekstern"
+        num = row['num']
+        f_per_user.append([who, num])
+
+    response = {
+        'product': serialize_product(Product.objects.get(pk=product)) if type(product) is unicode else serialize_product(product),
+        'counts': f_per_user,
+        'total_counts': sum([row['num'] for row in per_user]),
+    }
+
+    return response
+
+
+def stats_products(request, product=None):
+    if product:
+        # single
+        f_products = [stats_product(product)]
+        sales = OrderLine.objects.filter(product=product)
+    else:
+        # all
+        sales = OrderLine.objects.filter(product__active=True)
+        f_products = [stats_product(p) for p in Product.objects.filter(active=True)]
+
+    totals = float(sum([sale.amount for sale in sales]))
+    response = {
+        'request': 'all' if not product else product,
+        'response': {
+            'products': f_products,
+            'total_count': totals,
+        }
+    }
+    return JsonResponse(response)
+
+
+def stats_orders(request):
+    num_external_orders = Order.objects.filter(customer=None).count()
+    per_user = Order.objects\
+        .values('customer__first_name', 'customer__last_name')\
+        .annotate(num=Count('customer'))\
+        .order_by('num').reverse()
+    f_per_user = []
+    for row in per_user:
+        if row['customer__first_name'] is not None:
+            who = row['customer__first_name'] + " " + row['customer__last_name']
+            num = row['num']
+        else:
+            who = "Ekstern"
+            num = num_external_orders
+        f_per_user.append([who, num])
+
+    return JsonResponse(f_per_user, safe=False)
+
+
+def stats_orders_hourly(request):
+    orders = Order.objects.all()
+    f_hourly = dict([(key, 0) for key in range(0, 24)])  # init
+    # group by hour
+    for key, values in groupby(orders, key=lambda row: row.created.hour):
+        count = len(list(values))
+        f_hourly[key] += count
+
+    if len(orders) == 0:
+        return JsonResponse({})
+
+    response = {
+        'start': str(orders[0].created),
+        'hourly': [[k, v] for k, v in f_hourly.iteritems()],
+        'total': sum(f_hourly.values()),
+    }
+    return JsonResponse(response)
+
+
+def stats_products_realtime(request):
+    end_time = datetime.now()
+    start_time = datetime.now() - timedelta(hours=24)
+
+    order_lines = OrderLine.objects.filter(order__created__range=(start_time, end_time)).order_by("order__created")
+    products = {}
+    for order_line in order_lines:
+        order_time_in_milliseconds = int(time.mktime(order_line.order.created.timetuple()) * 1000)
+        if order_line.product not in products:
+            products[order_line.product] = [[order_time_in_milliseconds, order_line.amount]]
+        else:
+            prev_entry = products[order_line.product][-1]
+            products[order_line.product].append([order_time_in_milliseconds, prev_entry[1] + order_line.amount])
+
+    serialized_products = {}
+    for product, value in products.iteritems():
+        serialized_products[product.name] = value
+
+    response = {
+        'products': serialized_products
+    }
+
+    return JsonResponse(response)
+
+
+def stats_products_per_user(request, user_id=None):
+    if not user_id:
+        return JsonResponse({'error': 'Missing param user_id'})
+
+    order_lines = OrderLine.objects.filter(order__customer__pk=user_id).order_by("order__created")
+    products = {}
+    for order_line in order_lines:
+        order_time_in_milliseconds = int(time.mktime(order_line.order.created.timetuple()) * 1000)
+        if order_line.product not in products:
+            products[order_line.product] = [[order_time_in_milliseconds, order_line.amount]]
+        else:
+            prev_entry = products[order_line.product][-1]
+            products[order_line.product].append([order_time_in_milliseconds, prev_entry[1] + order_line.amount])
+
+    serialized_products = []
+    for product, value in products.iteritems():
+        serialized_products.append({
+            'name': product.name,
+            'data': value
+        })
+    return JsonResponse(serialized_products)

main/views/users.py

@@ -0,0 +1,61 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from django.contrib import messages
+from django.contrib.auth.decorators import login_required
+from django.db import connection
+from django.db.models import Sum, Count
+from django.shortcuts import render, redirect
+from django.contrib.auth import logout as auth_logout
+from main.forms import SimpleCreateUserForm
+from main.models import Order
+from main.models import Transaction
+
+
+def logout(request):
+    auth_logout(request)
+    return render(request, 'registration/logout.html')
+
+
+def create_user(request):
+    if request.method == "POST":
+        form = SimpleCreateUserForm(data=request.POST)
+        if form.is_valid():
+            user = form.save()
+            messages.success(request, "Hurra! {0} {1} er lagt til".format(user.first_name, user.last_name))
+            return redirect('create-user')
+
+        else:
+            messages.error(request, 'Feil med skjemaet, se under.')
+            form = SimpleCreateUserForm(data=request.POST)
+    else:
+        form = SimpleCreateUserForm()
+
+    return render(request, 'registration/create_user.html', {'form': form})
+
+
+@login_required
+def profile(request):
+    transactions = Transaction.objects.filter(user=request.user.pk)
+    transaction_totals = {
+        'sum': sum([t.amount for t in transactions])
+    }
+    orders = Order.objects.filter(customer=request.user.pk)
+    orders_totals = {
+        'sum': sum([o.order_sum for o in orders])
+    }
+
+    # order_lines = OrderLine.objects.filter(order__customer__pk=1).order_by("order__created")
+    order_report = _orders_monthly(filter_by={'customer': request.user.pk})
+    top_months = order_report.order_by('-sum')[:5]
+
+    return render(request, 'profile.html', locals())
+
+
+def _orders_monthly(filter_by={}, order_by='month'):
+
+    truncate_date = connection.ops.date_trunc_sql('month', 'created')
+    qs = Order.objects.filter(**filter_by).extra({'month': truncate_date})
+    order_report = qs.values('month').annotate(sum=Sum('order_sum'), num=Count('pk')).order_by(order_by)
+
+    return order_report