Some improvements to the sale overview

- Add total row to each category grouping
- Add a separate table to the bottom with statistics for each category
- Add a column that display the ratio of sale that is to Crew (credit)
- Add functionality to get the sale overview as a CSV

p0sx/p0sx/urls.py

@@ -20,6 +20,7 @@
     crew_report,
     fetch_credit_from_ge,
     sale_overview,
+    sale_overview_csv,
     scan_user_card,
     update_ge_user,
     verify_add_credit,
@@ -59,6 +60,7 @@
     url(r'edit_crew_credit/(?P<card>\w+)', credit_edit, name='edit_crew_credit'),
     # url(r'sale/', sale_url, name='sale'),
     url(r'sale/', sale_overview, name='sale'),
+     url(r'sale_csv/', sale_overview_csv, name='sale_csv'),
     url(r'crew_report/', crew_report, name='crew_report'),
     url(r'fetch_from_ge/', fetch_credit_from_ge, name='fetch_credit_from_ge'),
     url(r'scan_user_card', scan_user_card, name='scan_user_card'),

p0sx/pos/views/littleadmin.py

@@ -1,3 +1,4 @@
+import csv
 from datetime import datetime
 from django.conf import settings
 from django.contrib import messages
@@ -119,6 +120,53 @@ def credit_edit(request, card=None):
         return render(request, 'pos/credit_edit.djhtml', {'form': form, 'target': user})
 
 
+@login_required
+def sale_overview_csv(request):
+    from_time = None
+    to_time = None
+
+    if request.POST:
+        form = TimeFilterForm(request.POST)
+        if form.is_valid():
+            from_time = form.cleaned_data['from_time']
+            to_time = form.cleaned_data['to_time']
+    else:
+        form = TimeFilterForm()
+
+    order_lines = OrderLine.objects.all().values('item__id', 'order__payment_method')
+    if from_time is not None and to_time is not None:
+        order_lines = order_lines.filter(order__date__gte=from_time).filter(order__date__lt=to_time)
+    order_lines = order_lines.annotate(total=Sum('price'),
+                  first_sold=Min('order__date'),
+                  last_sold=Max('order__date'),
+                  sold=Sum(Case(When(price__gte=0, then=1), default=-1, output_field=IntegerField())))
+
+    items = Item.objects.all().values('name', 'category__name', 'id', 'price')
+
+    response = HttpResponse(
+        content_type="text/csv",
+        headers={"Content-Disposition": 'attachment; filename="sale_overview.csv"'},
+    )
+
+    writer = csv.writer(response)
+    writer.writerow(["Name", "First sold", "Last sold", "Prepaid", "Credit", "Sold"])
+    for item in items:
+        per_payment_method = order_lines.filter(item_id=item['id'])
+        first_sold = per_payment_method.aggregate(Min('first_sold'))['first_sold__min']
+        last_sold = per_payment_method.aggregate(Max('last_sold'))['last_sold__max']
+        try:
+            credit = per_payment_method.filter(order__payment_method=1)[0]
+        except IndexError:
+            credit = {'sold': 0, 'total': 0, 'first_sold': None, 'last_sold': None}
+        try:
+            prepaid = per_payment_method.filter(order__payment_method=4)[0]
+        except IndexError:
+            prepaid = {'sold': 0, 'total': 0, 'first_sold': None, 'last_sold': None}
+
+        writer.writerow([item['name'], first_sold, last_sold, prepaid['total'], credit['total'], prepaid['sold'] + credit['sold']])
+
+    return response
+
 @login_required
 def sale_overview(request):
     from_time = None
@@ -177,8 +225,29 @@ def sale_overview(request):
         total['credit'] += item['credit']
         total['total'] += item['total']
 
+    category_totals = []
+
+    for category_name, category_items in overview.items():
+        category_total = {}
+        category_total['name'] = "Total"
+        category_total['prepaid'] = 0
+        category_total['credit'] = 0
+        category_total['sold'] = 0
+        category_total['total'] = 0
+        for category_item in category_items:
+            print(category_item)
+            category_total['prepaid'] = category_total['prepaid'] + category_item['prepaid']
+            category_total['credit'] = category_total['credit'] + category_item['credit']
+            category_total['sold'] = category_total['sold'] + category_item['sold']
+            category_total['total'] = category_total['total'] + category_item['total']
+        category_items.append(category_total)
+
+        category_total_copy = category_total.copy();
+        category_total_copy['name'] = category_name
+        category_totals.append(category_total_copy)
+
     shifts = ShiftSerializer(Shift.objects.all(), many=True)
-    return render(request, 'pos/sale_overview.djhtml', {'overview': overview, 'shifts': shifts.data, 'total': total, 'form': form})
+    return render(request, 'pos/sale_overview.djhtml', {'overview': overview, 'categories': category_totals, 'shifts': shifts.data, 'total': total, 'form': form})
 
 
 @permission_required("pos.update_credit")

p0sx/templates/pos/sale_overview.djhtml

@@ -4,6 +4,14 @@ Sale overview
 {% endblock title %}
 {% block content %}
 
+<h3>Export CSV</h3>
+<form action="../sale_csv/" method="post">
+{% csrf_token %}
+{{ form.as_p  }}
+<button type="submit" class="waves-effect waves-light btn cyan">CSV</button>
+</form>
+
+<h3>Filter this page</h3>
 <form action="" method="post">
 {% csrf_token %}
 {{ form.as_p  }}
@@ -27,6 +35,7 @@ Sale overview
             <th>Prepaid</th>
             <th>Credit</th>
             <th>Total</th>
+            <th>Crew factor</th>
         </tr>
     </thead>
     <tbody>
@@ -39,34 +48,41 @@ Sale overview
             <td>{{ item.prepaid }}</td>
             <td>{{ item.credit }}</td>
             <td>{{ item.total }}</td>
+            <td>{% widthratio item.credit item.total 100 %}%</td>
         </tr>
         {% endfor %}
     </tbody>
     <tfoot>
-
     </tfoot>
     {% endfor %}
 </table>
 
-<h4>Shift/Total</h4>
+<h4>Categories</h4>
 <table>
+    <thead>
+        <tr>
+            <th>Category:</th>
+            <th>Sold</th>
+            <th>Prepaid</th>
+            <th>Credit</th>
+            <th>Total</th>
+            <th>Crew factor</th>
+        </tr>
+    </thead>
+    {% for category in categories %}
     <tr>
-        <th colspan="4"><h5>Shifts</h5></th>
-    </tr>
-    <tr>
-        <th>Shift:</th>
-        <th>Prepaid</th>
-        <th>Credit</th>
-        <th>Total</th>
-    </tr>
-    {% for shift in shifts %}
-    <tr>
-        <td>{{ shift.shift_name }}</td>
-        <td>{{ shift.prepaid }}</td>
-        <td>{{ shift.credit }}</td>
-        <td>{{ shift.credit|add:shift.prepaid }}</td>
+        <td>{{ category.name }}</td>
+        <td>{{ category.sold }}</td>
+        <td>{{ category.prepaid }}</td>
+        <td>{{ category.credit }}</td>
+        <td>{{ category.total }}</td>
+        <td>{% widthratio category.credit category.total 100 %}%</td>
     </tr>
     {% endfor %}
+</table>
+
+<h4>Total</h4>
+<table>
     <tr>
          <th colspan="4"><h5>Total</h5></th>
     </tr>
@@ -75,12 +91,14 @@ Sale overview
         <th>Prepaid</th>
         <th>Credit</th>
         <th>Total</th>
+        <th>Crew factor</th>
     </tr>
     <tr>
         <th></th>
         <td>{{ total.prepaid }}</td>
         <td>{{ total.credit }}</td>
         <td>{{ total.total }}</td>
+         <td>{% widthratio total.credit total.total 100 %}%</td>
     </tr>
 </table>
  {% endblock content %}