Add admin / serializer / API for PartLabel model

InvenTree/label/admin.py

@@ -3,7 +3,7 @@ from __future__ import unicode_literals
 
 from django.contrib import admin
 
-from .models import StockItemLabel, StockLocationLabel
+from .models import StockItemLabel, StockLocationLabel, PartLabel
 
 
 class LabelAdmin(admin.ModelAdmin):
@@ -13,3 +13,4 @@ class LabelAdmin(admin.ModelAdmin):
 
 admin.site.register(StockItemLabel, LabelAdmin)
 admin.site.register(StockLocationLabel, LabelAdmin)
+admin.site.register(PartLabel, LabelAdmin)

InvenTree/label/api.py

@@ -15,9 +15,10 @@ import InvenTree.helpers
 import common.models
 
 from stock.models import StockItem, StockLocation
+from part.models import Part
 
-from .models import StockItemLabel, StockLocationLabel
-from .serializers import StockItemLabelSerializer, StockLocationLabelSerializer
+from .models import StockItemLabel, StockLocationLabel, PartLabel
+from .serializers import StockItemLabelSerializer, StockLocationLabelSerializer, PartLabelSerializer
 
 
 class LabelListView(generics.ListAPIView):
@@ -132,6 +133,7 @@ class StockItemLabelMixin:
         for key in ['item', 'item[]', 'items', 'items[]']:
             if key in params:
                 items = params.getlist(key, [])
+                break
 
         valid_ids = []
 
@@ -376,6 +378,112 @@ class StockLocationLabelPrint(generics.RetrieveAPIView, StockLocationLabelMixin,
         return self.print(request, locations)
 
 
+class PartLabelMixin:
+    """
+    Mixin for extracting Part objects from query parameters
+    """
+
+    def get_parts(self):
+        """
+        Return a list of requested Part objects
+        """
+
+        parts = []
+
+        params = self.request.query_params
+
+        for key in ['part', 'part[]', 'parts', 'parts[]']:
+            if key in params:
+                parts = parts.getlist(key, [])
+                break
+                
+        valid_ids = []
+
+        for part in parts:
+            try:
+                valid_ids.append(int(part))
+            except (ValueError):
+                pass
+
+        # List of Part objects which match provided values
+        return Part.objects.filter(pk__in=valid_ids)
+
+
+class PartLabelList(LabelListView, PartLabelMixin):
+    """
+    API endpoint for viewing list of PartLabel objects
+    """
+
+    queryset = PartLabel.objects.all()
+    serializer_class = PartLabelSerializer
+
+    def filter_queryset(self, queryset):
+
+        queryset = super().filter_queryset(queryset)
+
+        parts = self.get_parts()
+
+        if len(parts) > 0:
+
+            valid_label_ids = set()
+
+            for label in queryset.all():
+
+                matches = True
+
+                try:
+                    filters = InvenTree.helpers.validateFilterString(label.filters)
+                except ValidationError:
+                    continue
+
+                for part in parts:
+
+                    part_query = Part.objects.filter(pk=part.pk)
+
+                    try:
+                        if not part_query.filter(**filters).exists():
+                            matches = False
+                            break
+                    except FieldError:
+                        matches = False
+                        break
+
+                if matches:
+                    valid_label_ids.add(label.pk)
+
+            # Reduce queryset to only valid matches
+            queryset = queryset.filter(pk__in=[pk for pk in valid_label_ids])
+
+        return queryset
+
+
+class PartLabelDetail(generics.RetrieveUpdateDestroyAPIView):
+    """
+    API endpoint for a single PartLabel object
+    """
+
+    queryset = PartLabel.objects.all()
+    serializer_class = PartLabelSerializer
+
+
+class PartLabelPrint(generics.RetrieveAPIView, PartLabelMixin, LabelPrintMixin):
+    """
+    API endpoint for printing a PartLabel object
+    """
+
+    queryset = PartLabel.objects.all()
+    serializer_class = PartLabelSerializer
+
+    def get(self, request, *args, **kwargs):
+        """
+        Check if valid part(s) have been provided
+        """
+
+        parts = self.get_parts()
+
+        return self.print(request, parts)
+
+
 label_api_urls = [
 
     # Stock item labels
@@ -401,4 +509,16 @@ label_api_urls = [
         # List view
         url(r'^.*$', StockLocationLabelList.as_view(), name='api-stocklocation-label-list'),
     ])),
+
+    # Part labels
+    url(r'^part/', include([
+        # Detail views
+        url(r'^(?P<pk>\d+)/', include([
+            url(r'^print/', PartLabelPrint.as_view(), name='api-part-label-print'),
+            url(r'^.*$', PartLabelDetail.as_view(), name='api-part-label-detail'),
+        ])),
+
+        # List view
+        url(r'^.*$', PartLabelList.as_view(), name='api-part-label-list'),
+    ])),
 ]

InvenTree/label/models.py

@@ -12,7 +12,6 @@ import datetime
 
 from django.conf import settings
 from django.db import models
-from django.db.models.fields import Field
 from django.urls import reverse
 from django.core.validators import FileExtensionValidator, MinValueValidator
 from django.core.exceptions import ValidationError, FieldError

InvenTree/label/serializers.py

@@ -4,7 +4,7 @@ from __future__ import unicode_literals
 from InvenTree.serializers import InvenTreeModelSerializer
 from InvenTree.serializers import InvenTreeAttachmentSerializerField
 
-from .models import StockItemLabel, StockLocationLabel
+from .models import StockItemLabel, StockLocationLabel, PartLabel
 
 
 class StockItemLabelSerializer(InvenTreeModelSerializer):
@@ -43,3 +43,22 @@ class StockLocationLabelSerializer(InvenTreeModelSerializer):
             'filters',
             'enabled',
         ]
+
+
+class PartLabelSerializer(InvenTreeModelSerializer):
+    """
+    Serializes a PartLabel object
+    """
+
+    label = InvenTreeAttachmentSerializerField(required=True)
+
+    class Meta:
+        model = PartLabel
+        fields = [
+            'pk',
+            'name',
+            'description',
+            'label',
+            'filters',
+            'enabled',
+        ]