Add API endpoint for purchase orders

- List and create purchase orders
- List and create purchase order line items

InvenTree/InvenTree/urls.py

@@ -23,6 +23,7 @@ from part.api import part_api_urls, bom_api_urls
 from company.api import company_api_urls
 from stock.api import stock_api_urls
 from build.api import build_api_urls
+from order.api import po_api_urls
 
 from django.conf import settings
 from django.conf.urls.static import static
@@ -43,6 +44,7 @@ apipatterns = [
     url(r'^company/', include(company_api_urls)),
     url(r'^stock/', include(stock_api_urls)),
     url(r'^build/', include(build_api_urls)),
+    url(r'^po/', include(po_api_urls)),
 
     # User URLs
     url(r'^user/', include(user_urls)),

InvenTree/order/api.py

@@ -0,0 +1,92 @@
+"""
+JSON API for the Order app
+"""
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django_filters.rest_framework import DjangoFilterBackend
+from rest_framework import generics, permissions
+
+from django.conf.urls import url
+
+from .models import PurchaseOrder, PurchaseOrderLineItem
+from .serializers import POSerializer, POLineItemSerializer
+
+
+class POList(generics.ListCreateAPIView):
+    """ API endpoint for accessing a list of Order objects
+
+    - GET: Return list of PO objects (with filters)
+    - POST: Create a new PurchaseOrder object
+    """
+
+    queryset = PurchaseOrder.objects.all()
+    serializer_class = POSerializer
+
+    permission_classes = [
+        permissions.IsAuthenticated,
+    ]
+
+    filter_backends = [
+        DjangoFilterBackend,
+    ]
+
+    filter_fields = [
+        'supplier',
+    ]
+
+
+class PODetail(generics.RetrieveUpdateAPIView):
+    """ API endpoint for detail view of a PurchaseOrder object """
+
+    queryset = PurchaseOrder.objects.all()
+    serializer_class = POSerializer
+
+    permission_classes = [
+        permissions.IsAuthenticated
+    ]
+
+
+class POLineItemList(generics.ListCreateAPIView):
+    """ API endpoint for accessing a list of PO Line Item objects
+
+    - GET: Return a list of PO Line Item objects
+    - POST: Create a new PurchaseOrderLineItem object
+    """
+
+    queryset = PurchaseOrderLineItem.objects.all()
+    serializer_class = POLineItemSerializer
+
+    permission_classes = [
+        permissions.IsAuthenticated,
+    ]
+
+    filter_backends = [
+        DjangoFilterBackend,
+    ]
+
+    filter_fields = [
+        'order',
+        'part'
+    ]
+
+
+class POLineItemDetail(generics.RetrieveUpdateAPIView):
+    """ API endpoint for detail view of a PurchaseOrderLineItem object """
+
+    queryset = PurchaseOrderLineItem
+    serializer_class = POLineItemSerializer
+
+    permission_classes = [
+        permissions.IsAuthenticated,
+    ]
+
+
+po_api_urls = [
+    url(r'^order/(?P<pk>\d+)/?$', PODetail.as_view(), name='api-po-detail'),
+    url(r'^order/?$', POList.as_view(), name='api-po-list'),
+
+    url(r'^line/(?P<pk>\d+)/?$', POLineItemDetail.as_view(), name='api-po-line-detail'),
+    url(r'^line/?$', POLineItemList.as_view(), name='api-po-line-list'),
+]

InvenTree/order/serializers.py

@@ -0,0 +1,48 @@
+"""
+JSON serializers for the Order API
+"""
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from InvenTree.serializers import InvenTreeModelSerializer
+
+from .models import PurchaseOrder, PurchaseOrderLineItem
+
+
+class POSerializer(InvenTreeModelSerializer):
+    """ Serializes an Order object """
+
+    class Meta:
+        model = PurchaseOrder
+        
+        fields = [
+            'pk',
+            'supplier',
+            'reference',
+            'description',
+            'URL',
+            'status',
+            'notes',
+        ]
+        
+        read_only_fields = [
+            'reference',
+            'status'
+        ]
+
+
+class POLineItemSerializer(InvenTreeModelSerializer):
+
+    class Meta:
+        model = PurchaseOrderLineItem
+
+        fields = [
+            'pk',
+            'quantity',
+            'reference',
+            'notes',
+            'order',
+            'part',
+            'received',
+        ]