add parts list

partdoc/parts/templates/parts/parts.html

@@ -0,0 +1,28 @@
+<h1>parts</h1>
+
+<table>
+<tr>
+	<th>Teil-Nr.</th>
+	<th>Teilbezeichnung</th>
+	{% for product in products %}
+	<th>{{product.name}}</th>
+	{% endfor %}
+	<th>Summe</th>
+</tr>
+
+{% for part in quantities %}
+<tr>
+	<td>{{part.number}}</td>
+	<td>{{part.name}}</td>
+	{% for product in part.quantities %}
+	<td>{{product}}</td>
+	{% endfor %}
+	<td>{{part.sum}}</td>
+</tr>
+{% endfor %}
+
+<tr>
+	<td>Summe:</td>
+	<td>{{len}}</td>
+	<td>Teile</td>
+</table>

partdoc/parts/urls.py

@@ -7,6 +7,7 @@ urlpatterns = [
 	path('', views.index, name="index"),
 	path('product/<int:product_id>/', views.product, name="detail"),
 	path('sketch/<int:sketch_id>/', views.sketch, name="sketch"),
+	path('parts', views.parts, name="parts"),
 	path('add/<int:product_id>/sketch/<int:sketch_id>', views.sketch_add, name="continue_sketch"),
 	path('add/<int:product_id>/sketch', views.sketch_add, name="new_sketch"),
 	path('search/part/', views.part_search, name="part_search"),

partdoc/parts/views.py

@@ -3,6 +3,7 @@ from django.shortcuts import get_object_or_404, render
 from django.http import HttpResponseRedirect, HttpResponse
 from django.urls import reverse
 from django.db import transaction
+from django.db.models import Sum
 
 from .models import *
 
@@ -28,6 +29,32 @@ def sketch(request, sketch_id):
 	return render(request, 'parts/sketch.html', context)
 
 
+def parts(request):
+	products = Product.objects.order_by('name')
+	parts = BrandedPart.objects.order_by('number')
+	quantities = []
+	for part in parts:	# FIXME!
+		qtys = part.usage_set.values('productusage__product__name').annotate(Sum('productusage__quantity')).order_by('productusage__product__name')
+		#prod_qtys = {}
+		prod_qtys = []
+		for obj in qtys:
+			# FIXME: make sure there are n(==products) entries
+			#prod_qtys['productusage__product__name'] = obj['productusage__quantity__sum']
+			qty = obj['productusage__quantity__sum']
+			if not qty:
+				qty = 0
+			prod_qtys.append(qty)
+		quantities.append({
+			"name": part.get_name(),
+			"number": part.number,
+			"quantities": prod_qtys,
+			"sum": sum(prod_qtys),
+		})
+		
+	context = {'products': products, 'parts': parts, 'quantities': quantities, 'len': len(quantities)}
+	return render(request, 'parts/parts.html', context)
+
+
 def part_search(request):
 	if "term" in request.GET:
 		term = request.GET.get("term", '')