Merge remote-tracking branch 'upstream/master'

InvenTree/InvenTree/helpers.py

@@ -242,7 +242,7 @@ def WrapWithQuotes(text, quote='"'):
     return text
 
 
-def MakeBarcode(object_name, object_data):
+def MakeBarcode(object_name, object_pk, object_data, **kwargs):
     """ Generate a string for a barcode. Adds some global InvenTree parameters.
 
     Args:
@@ -255,12 +255,20 @@ def MakeBarcode(object_name, object_data):
         json string of the supplied data plus some other data
     """
 
-    data = {
-        'tool': 'InvenTree',
-        'version': inventreeVersion(),
-        'instance': inventreeInstanceName(),
-        object_name: object_data
-    }
+    brief = kwargs.get('brief', False)
+
+    data = {}
+
+    if brief:
+        data[object_name] = object_pk
+    else:
+        data['tool'] = 'InvenTree'
+        data['version'] = inventreeVersion()
+        data['instance'] = inventreeInstanceName()
+
+        # Ensure PK is included
+        object_data['id'] = object_pk
+        data[object_name] = object_data
 
     return json.dumps(data, sort_keys=True)
 
@@ -383,3 +391,56 @@ def ExtractSerialNumbers(serials, expected_quantity):
         raise ValidationError([_("Number of unique serial number ({s}) must match quantity ({q})".format(s=len(numbers), q=expected_quantity))])
 
     return numbers
+
+
+def validateFilterString(value):
+    """
+    Validate that a provided filter string looks like a list of comma-separated key=value pairs
+
+    These should nominally match to a valid database filter based on the model being filtered.
+
+    e.g. "category=6, IPN=12"
+    e.g. "part__name=widget"
+
+    The ReportTemplate class uses the filter string to work out which items a given report applies to.
+    For example, an acceptance test report template might only apply to stock items with a given IPN,
+    so the string could be set to:
+
+    filters = "IPN = ACME0001"
+
+    Returns a map of key:value pairs
+    """
+
+    # Empty results map
+    results = {}
+
+    value = str(value).strip()
+
+    if not value or len(value) == 0:
+        return results
+
+    groups = value.split(',')
+
+    for group in groups:
+        group = group.strip()
+
+        pair = group.split('=')
+
+        if not len(pair) == 2:
+            raise ValidationError(
+                "Invalid group: {g}".format(g=group)
+            )
+
+        k, v = pair
+
+        k = k.strip()
+        v = v.strip()
+
+        if not k or not v:
+            raise ValidationError(
+                "Invalid group: {g}".format(g=group)
+            )
+
+        results[k] = v
+
+    return results

InvenTree/InvenTree/middleware.py

@@ -91,6 +91,8 @@ class QueryCountMiddleware(object):
     To enable this middleware, set 'log_queries: True' in the local InvenTree config file.
 
     Reference: https://www.dabapps.com/blog/logging-sql-queries-django-13/
+
+    Note: 2020-08-15 - This is no longer used, instead we now rely on the django-debug-toolbar addon
     """
 
     def __init__(self, get_response):

InvenTree/InvenTree/settings.py

@@ -130,6 +130,7 @@ INSTALLED_APPS = [
     'build.apps.BuildConfig',
     'common.apps.CommonConfig',
     'company.apps.CompanyConfig',
+    'label.apps.LabelConfig',
     'order.apps.OrderConfig',
     'part.apps.PartConfig',
     'report.apps.ReportConfig',
@@ -172,11 +173,15 @@ MIDDLEWARE = [
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
-    'InvenTree.middleware.AuthRequiredMiddleware',
+
+    'InvenTree.middleware.AuthRequiredMiddleware'
 ]
 
-if CONFIG.get('log_queries', False):
-    MIDDLEWARE.append('InvenTree.middleware.QueryCountMiddleware')
+# If the debug toolbar is enabled, add the modules
+if DEBUG and CONFIG.get('debug_toolbar', False):
+    print("Running with DEBUG_TOOLBAR enabled")
+    INSTALLED_APPS.append('debug_toolbar')
+    MIDDLEWARE.append('debug_toolbar.middleware.DebugToolbarMiddleware')
 
 ROOT_URLCONF = 'InvenTree.urls'
 
@@ -377,3 +382,8 @@ DBBACKUP_STORAGE = 'django.core.files.storage.FileSystemStorage'
 DBBACKUP_STORAGE_OPTIONS = {
     'location': CONFIG.get('backup_dir', tempfile.gettempdir()),
 }
+
+# Internal IP addresses allowed to see the debug toolbar
+INTERNAL_IPS = [
+    '127.0.0.1',
+]

InvenTree/InvenTree/tests.py

@@ -138,6 +138,7 @@ class TestMakeBarcode(TestCase):
 
         bc = helpers.MakeBarcode(
             "part",
+            3,
             {
                 "id": 3,
                 "url": "www.google.com",

InvenTree/InvenTree/urls.py

@@ -6,6 +6,7 @@ Passes URL lookup downstream to each app as required.
 
 
 from django.conf.urls import url, include
+from django.urls import path
 from django.contrib import admin
 from django.contrib.auth import views as auth_views
 from qr_code import urls as qr_code_urls
@@ -135,5 +136,12 @@ urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
 # Media file access
 urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
 
+# Debug toolbar access (if in DEBUG mode)
+if settings.DEBUG and 'debug_toolbar' in settings.INSTALLED_APPS:
+    import debug_toolbar
+    urlpatterns = [
+        path('__debug/', include(debug_toolbar.urls)),
+    ] + urlpatterns
+
 # Send any unknown URLs to the parts page
 urlpatterns += [url(r'^.*$', RedirectView.as_view(url='/index/', permanent=False), name='index')]

InvenTree/InvenTree/version.py

@@ -6,7 +6,7 @@ import subprocess
 from common.models import InvenTreeSetting
 import django
 
-INVENTREE_SW_VERSION = "0.1.1 pre"
+INVENTREE_SW_VERSION = "0.1.3 pre"
 
 
 def inventreeInstanceName():

InvenTree/barcode/plugins/inventree_barcode.py

@@ -47,12 +47,12 @@ class InvenTreeBarcodePlugin(BarcodePlugin):
         else:
             return False
 
-        for key in ['tool', 'version']:
-            if key not in self.data.keys():
-                return False
+        # If any of the following keys are in the JSON data,
+        # let's go ahead and assume that the code is a valid InvenTree one...
 
-        if not self.data['tool'] == 'InvenTree':
-            return False
+        for key in ['tool', 'version', 'InvenTree', 'stockitem', 'location', 'part']:
+            if key in self.data.keys():
+                return True
 
         return True
 
@@ -60,6 +60,18 @@ class InvenTreeBarcodePlugin(BarcodePlugin):
 
         for k in self.data.keys():
             if k.lower() == 'stockitem':
+
+                data = self.data[k]
+
+                pk = None
+
+                # Initially try casting to an integer
+                try:
+                    pk = int(data)
+                except (TypeError, ValueError):
+                    pk = None
+
+                if pk is None:
                     try:
                         pk = self.data[k]['id']
                     except (AttributeError, KeyError):
@@ -77,6 +89,17 @@ class InvenTreeBarcodePlugin(BarcodePlugin):
 
         for k in self.data.keys():
             if k.lower() == 'stocklocation':
+
+                pk = None
+
+                # First try simple integer lookup
+                try:
+                    pk = int(self.data[k])
+                except (TypeError, ValueError):
+                    pk = None
+
+                if pk is None:
+                    # Lookup by 'id' field
                     try:
                         pk = self.data[k]['id']
                     except (AttributeError, KeyError):
@@ -94,6 +117,16 @@ class InvenTreeBarcodePlugin(BarcodePlugin):
 
         for k in self.data.keys():
             if k.lower() == 'part':
+
+                pk = None
+
+                # Try integer lookup first
+                try:
+                    pk = int(self.data[k])
+                except (TypeError, ValueError):
+                    pk = None
+
+                if pk is None:
                     try:
                         pk = self.data[k]['id']
                     except (AttributeError, KeyError):

InvenTree/company/serializers.py

@@ -99,6 +99,10 @@ class SupplierPartSerializer(InvenTreeModelSerializer):
         if manufacturer_detail is not True:
             self.fields.pop('manufacturer_detail')
 
+    supplier = serializers.PrimaryKeyRelatedField(queryset=Company.objects.filter(is_supplier=True))
+
+    manufacturer = serializers.PrimaryKeyRelatedField(queryset=Company.objects.filter(is_manufacturer=True))
+
     class Meta:
         model = SupplierPart
         fields = [

InvenTree/config_template.yaml

@@ -58,9 +58,10 @@ static_root: '../inventree_static'
 #  - git
 #  - ssh
 
-# Logging options
-# If debug mode is enabled, set log_queries to True to show aggregate database queries in the debug console
-log_queries: False
+# Set debug_toolbar to True to enable a debugging toolbar for InvenTree
+# Note: This will only be displayed if DEBUG mode is enabled, 
+#       and only if InvenTree is accessed from a local IP (127.0.0.1)
+debug_toolbar: False
 
 # Backup options
 # Set the backup_dir parameter to store backup files in a specific location

InvenTree/label/admin.py

@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.contrib import admin
+
+from .models import StockItemLabel
+
+
+class StockItemLabelAdmin(admin.ModelAdmin):
+
+    list_display = ('name', 'description', 'label')
+
+
+admin.site.register(StockItemLabel, StockItemLabelAdmin)

InvenTree/label/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class LabelConfig(AppConfig):
+    name = 'label'

InvenTree/label/migrations/0001_initial.py

@@ -0,0 +1,30 @@
+# Generated by Django 3.0.7 on 2020-08-15 23:27
+
+import InvenTree.helpers
+import django.core.validators
+from django.db import migrations, models
+import label.models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='StockItemLabel',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(help_text='Label name', max_length=100, unique=True)),
+                ('description', models.CharField(blank=True, help_text='Label description', max_length=250, null=True)),
+                ('label', models.FileField(help_text='Label template file', upload_to=label.models.rename_label, validators=[django.core.validators.FileExtensionValidator(allowed_extensions=['html'])])),
+                ('filters', models.CharField(blank=True, help_text='Query filters (comma-separated list of key=value pairs', max_length=250, validators=[InvenTree.helpers.validateFilterString])),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

InvenTree/label/models.py

@@ -0,0 +1,149 @@
+"""
+Label printing models
+"""
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import os
+import io
+
+from blabel import LabelWriter
+
+from django.db import models
+from django.core.validators import FileExtensionValidator
+
+from django.utils.translation import gettext_lazy as _
+
+from InvenTree.helpers import validateFilterString, normalize
+
+from stock.models import StockItem
+
+
+def rename_label(instance, filename):
+    """ Place the label file into the correct subdirectory """
+
+    filename = os.path.basename(filename)
+
+    return os.path.join('label', 'template', instance.SUBDIR, filename)
+
+
+class LabelTemplate(models.Model):
+    """
+    Base class for generic, filterable labels.
+    """
+
+    class Meta:
+        abstract = True
+
+    # Each class of label files will be stored in a separate subdirectory
+    SUBDIR = "label"
+
+    @property
+    def template(self):
+        return self.label.path
+
+    def __str__(self):
+        return "{n} - {d}".format(
+            n=self.name,
+            d=self.description
+        )
+
+    name = models.CharField(
+        unique=True,
+        blank=False, max_length=100,
+        help_text=_('Label name'),
+    )
+
+    description = models.CharField(max_length=250, help_text=_('Label description'), blank=True, null=True)
+
+    label = models.FileField(
+        upload_to=rename_label,
+        blank=False, null=False,
+        help_text=_('Label template file'),
+        validators=[FileExtensionValidator(allowed_extensions=['html'])],
+    )
+
+    filters = models.CharField(
+        blank=True, max_length=250,
+        help_text=_('Query filters (comma-separated list of key=value pairs'),
+        validators=[validateFilterString]
+    )
+
+    def get_record_data(self, items):
+        """
+        Return a list of dict objects, one for each item.
+        """
+
+        return []
+
+    def render_to_file(self, filename, items, **kwargs):
+        """
+        Render labels to a PDF file
+        """
+
+        records = self.get_record_data(items)
+
+        writer = LabelWriter(self.template)
+
+        writer.write_labels(records, filename)
+
+    def render(self, items, **kwargs):
+        """
+        Render labels to an in-memory PDF object, and return it
+        """
+
+        records = self.get_record_data(items)
+
+        writer = LabelWriter(self.template)
+
+        buffer = io.BytesIO()
+
+        writer.write_labels(records, buffer)
+
+        return buffer
+
+
+class StockItemLabel(LabelTemplate):
+    """
+    Template for printing StockItem labels
+    """
+
+    SUBDIR = "stockitem"
+
+    def matches_stock_item(self, item):
+        """
+        Test if this label template matches a given StockItem object
+        """
+
+        filters = validateFilterString(self.filters)
+
+        items = StockItem.objects.filter(**filters)
+
+        items = items.filter(pk=item.pk)
+
+        return items.exists()
+
+    def get_record_data(self, items):
+        """
+        Generate context data for each provided StockItem
+        """
+        records = []
+        
+        for item in items:
+
+            # Add some basic information
+            records.append({
+                'item': item,
+                'part': item.part,
+                'name': item.part.name,
+                'ipn': item.part.IPN,
+                'quantity': normalize(item.quantity),
+                'serial': item.serial,
+                'uid': item.uid,
+                'pk': item.pk,
+                'qr_data': item.format_barcode(brief=True),
+                'tests': item.testResultMap()
+            })
+
+        return records

InvenTree/label/tests.py

@@ -0,0 +1 @@
+# Create your tests here.

InvenTree/label/views.py

@@ -0,0 +1 @@
+# Create your views here.

InvenTree/part/api.py

@@ -604,6 +604,19 @@ class BomList(generics.ListCreateAPIView):
 
     serializer_class = part_serializers.BomItemSerializer
 
+    def list(self, request, *args, **kwargs):
+
+        queryset = self.filter_queryset(self.get_queryset())
+
+        serializer = self.get_serializer(queryset, many=True)
+
+        data = serializer.data
+
+        if request.is_ajax():
+            return JsonResponse(data, safe=False)
+        else:
+            return Response(data)
+
     def get_serializer(self, *args, **kwargs):
 
         # Do we wish to include extra detail?
@@ -622,8 +635,10 @@ class BomList(generics.ListCreateAPIView):
         
         return self.serializer_class(*args, **kwargs)
 
-    def get_queryset(self):
+    def get_queryset(self, *args, **kwargs):
+
         queryset = BomItem.objects.all()
+
         queryset = self.get_serializer_class().setup_eager_loading(queryset)
 
         return queryset

InvenTree/part/bom.py

@@ -40,7 +40,7 @@ def MakeBomTemplate(fmt):
     return DownloadFile(data, filename)
 
 
-def ExportBom(part, fmt='csv', cascade=False):
+def ExportBom(part, fmt='csv', cascade=False, max_levels=None):
     """ Export a BOM (Bill of Materials) for a given part.
 
     Args:
@@ -59,7 +59,7 @@ def ExportBom(part, fmt='csv', cascade=False):
         # Add items at a given layer
         for item in items:
 
-            item.level = '-' * level
+            item.level = str(int(level))
             
             # Avoid circular BOM references
             if item.pk in uids:
@@ -68,6 +68,7 @@ def ExportBom(part, fmt='csv', cascade=False):
             bom_items.append(item)
 
             if item.sub_part.assembly:
+                if max_levels is None or level < max_levels:
                     add_items(item.sub_part.bom_items.all().order_by('id'), level + 1)
         
     if cascade:

InvenTree/part/forms.py

@@ -56,6 +56,8 @@ class BomExportForm(forms.Form):
 
     cascading = forms.BooleanField(label=_("Cascading"), required=False, initial=False, help_text=_("Download cascading / multi-level BOM"))
 
+    levels = forms.IntegerField(label=_("Levels"), required=True, initial=0, help_text=_("Select maximum number of BOM levels to export (0 = all levels)"))
+
     def get_choices(self):
         """ BOM export format choices """
 

InvenTree/part/models.py

@@ -560,16 +560,17 @@ class Part(MPTTModel):
 
     responsible = models.ForeignKey(User, on_delete=models.SET_NULL, blank=True, null=True, related_name='parts_responible')
 
-    def format_barcode(self):
+    def format_barcode(self, **kwargs):
         """ Return a JSON string for formatting a barcode for this Part object """
 
         return helpers.MakeBarcode(
             "part",
+            self.id,
             {
-                "id": self.id,
                 "name": self.full_name,
                 "url": reverse('api-part-detail', kwargs={'pk': self.id}),
-            }
+            },
+            **kwargs
         )
 
     @property

InvenTree/part/serializers.py

@@ -236,6 +236,9 @@ class PartSerializer(InvenTreeModelSerializer):
     thumbnail = serializers.CharField(source='get_thumbnail_url', read_only=True)
     starred = serializers.SerializerMethodField()
 
+    # PrimaryKeyRelated fields (Note: enforcing field type here results in much faster queries, somehow...)
+    category = serializers.PrimaryKeyRelatedField(queryset=PartCategory.objects.all())
+
     # TODO - Include annotation for the following fields:
     # allocated_stock = serializers.FloatField(source='allocation_count', read_only=True)
     # bom_items = serializers.IntegerField(source='bom_count', read_only=True)
@@ -303,7 +306,12 @@ class BomItemSerializer(InvenTreeModelSerializer):
 
     quantity = serializers.FloatField()
 
+    part = serializers.PrimaryKeyRelatedField(queryset=Part.objects.filter(assembly=True))
+    
     part_detail = PartBriefSerializer(source='part', many=False, read_only=True)
+
+    sub_part = serializers.PrimaryKeyRelatedField(queryset=Part.objects.filter(component=True))
+
     sub_part_detail = PartBriefSerializer(source='sub_part', many=False, read_only=True)
 
     validated = serializers.BooleanField(read_only=True, source='is_line_valid')
@@ -328,6 +336,7 @@ class BomItemSerializer(InvenTreeModelSerializer):
         queryset = queryset.prefetch_related('part')
         queryset = queryset.prefetch_related('part__category')
         queryset = queryset.prefetch_related('part__stock_items')
+
         queryset = queryset.prefetch_related('sub_part')
         queryset = queryset.prefetch_related('sub_part__category')
         queryset = queryset.prefetch_related('sub_part__stock_items')

InvenTree/part/views.py

@@ -1392,10 +1392,22 @@ class BomDownload(AjaxView):
 
         cascade = str2bool(request.GET.get('cascade', False))
 
+        levels = request.GET.get('levels', None)
+
+        if levels is not None:
+            try:
+                levels = int(levels)
+
+                if levels <= 0:
+                    levels = None
+
+            except ValueError:
+                levels = None
+
         if not IsValidBOMFormat(export_format):
             export_format = 'csv'
 
-        return ExportBom(part, fmt=export_format, cascade=cascade)
+        return ExportBom(part, fmt=export_format, cascade=cascade, max_levels=levels)
 
     def get_data(self):
         return {
@@ -1419,6 +1431,7 @@ class BomExport(AjaxView):
         # Extract POSTed form data
         fmt = request.POST.get('file_format', 'csv').lower()
         cascade = str2bool(request.POST.get('cascading', False))
+        levels = request.POST.get('levels', None)
 
         try:
             part = Part.objects.get(pk=self.kwargs['pk'])
@@ -1434,6 +1447,9 @@ class BomExport(AjaxView):
         url += '?file_format=' + fmt
         url += '&cascade=' + str(cascade)
 
+        if levels:
+            url += '&levels=' + str(levels)
+
         data = {
             'form_valid': part is not None,
             'url': url,

InvenTree/stock/api.py

@@ -338,11 +338,6 @@ class StockList(generics.ListCreateAPIView):
 
         queryset = self.filter_queryset(self.get_queryset())
 
-        page = self.paginate_queryset(queryset)
-        if page is not None:
-            serializer = self.get_serializer(page, many=True)
-            return self.get_paginated_response(serializer.data)
-
         serializer = self.get_serializer(queryset, many=True)
 
         data = serializer.data
@@ -363,6 +358,7 @@ class StockList(generics.ListCreateAPIView):
                 part_ids.add(part)
 
             sp = item['supplier_part']
+
             if sp:
                 supplier_part_ids.add(sp)
 
@@ -434,6 +430,7 @@ class StockList(generics.ListCreateAPIView):
     def get_queryset(self, *args, **kwargs):
 
         queryset = super().get_queryset(*args, **kwargs)
+
         queryset = StockItemSerializer.prefetch_queryset(queryset)
         queryset = StockItemSerializer.annotate_queryset(queryset)
 

InvenTree/stock/forms.py

@@ -178,6 +178,37 @@ class SerializeStockForm(HelperForm):
         ]
 
 
+class StockItemLabelSelectForm(HelperForm):
+    """ Form for selecting a label template for a StockItem """
+
+    label = forms.ChoiceField(
+        label=_('Label'),
+        help_text=_('Select test report template')
+    )
+
+    class Meta:
+        model = StockItem
+        fields = [
+            'label',
+        ]
+
+    def get_label_choices(self, labels):
+
+        choices = []
+
+        if len(labels) > 0:
+            for label in labels:
+                choices.append((label.pk, label))
+
+        return choices
+
+    def __init__(self, labels, *args, **kwargs):
+
+        super().__init__(*args, **kwargs)
+
+        self.fields['label'].choices = self.get_label_choices(labels)
+
+
 class TestReportFormatForm(HelperForm):
     """ Form for selection a test report template """
 

InvenTree/stock/models.py

@@ -45,16 +45,17 @@ class StockLocation(InvenTreeTree):
     def get_absolute_url(self):
         return reverse('stock-location-detail', kwargs={'pk': self.id})
 
-    def format_barcode(self):
+    def format_barcode(self, **kwargs):
         """ Return a JSON string for formatting a barcode for this StockLocation object """
 
         return helpers.MakeBarcode(
             'stocklocation',
+            self.pk,
             {
-                "id": self.id,
                 "name": self.name,
                 "url": reverse('api-location-detail', kwargs={'pk': self.id}),
-            }
+            },
+            **kwargs
         )
 
     def get_stock_items(self, cascade=True):
@@ -283,7 +284,7 @@ class StockItem(MPTTModel):
     def get_part_name(self):
         return self.part.full_name
 
-    def format_barcode(self):
+    def format_barcode(self, **kwargs):
         """ Return a JSON string for formatting a barcode for this StockItem.
         Can be used to perform lookup of a stockitem using barcode
 
@@ -296,10 +297,11 @@ class StockItem(MPTTModel):
 
         return helpers.MakeBarcode(
             "stockitem",
+            self.id,
             {
-                "id": self.id,
                 "url": reverse('api-stock-detail', kwargs={'pk': self.id}),
-            }
+            },
+            **kwargs
         )
 
     uid = models.CharField(blank=True, max_length=128, help_text=("Unique identifier field"))

InvenTree/stock/serializers.py

@@ -99,15 +99,34 @@ class StockItemSerializer(InvenTreeModelSerializer):
 
         return queryset
 
+    belongs_to = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    build_order = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    customer = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    location = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    in_stock = serializers.BooleanField(read_only=True)
+
+    sales_order = serializers.PrimaryKeyRelatedField(read_only=True)
+
     status_text = serializers.CharField(source='get_status_display', read_only=True)
     
-    part_detail = PartBriefSerializer(source='part', many=False, read_only=True)
-    location_detail = LocationBriefSerializer(source='location', many=False, read_only=True)
+    supplier_part = serializers.PrimaryKeyRelatedField(read_only=True)
+    
     supplier_part_detail = SupplierPartSerializer(source='supplier_part', many=False, read_only=True)
 
+    part = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    part_detail = PartBriefSerializer(source='part', many=False, read_only=True)
+
+    location_detail = LocationBriefSerializer(source='location', many=False, read_only=True)
+
     tracking_items = serializers.IntegerField(source='tracking_info_count', read_only=True, required=False)
 
     quantity = serializers.FloatField()
+    
     allocated = serializers.FloatField(source='allocation_count', required=False)
 
     serial = serializers.IntegerField(required=False)
@@ -140,9 +159,9 @@ class StockItemSerializer(InvenTreeModelSerializer):
         fields = [
             'allocated',
             'batch',
-            'build_order',
             'belongs_to',
             'customer',
+            'build_order',
             'in_stock',
             'link',
             'location',
@@ -155,10 +174,10 @@ class StockItemSerializer(InvenTreeModelSerializer):
             'required_tests',
             'sales_order',
             'serial',
-            'supplier_part',
-            'supplier_part_detail',
             'status',
             'status_text',
+            'supplier_part',
+            'supplier_part_detail',
             'tracking_items',
             'uid',
         ]

InvenTree/stock/templates/stock/item_base.html

@@ -78,7 +78,7 @@ InvenTree | {% trans "Stock Item" %} - {{ item }}
         <button id='barcode-options' title='{% trans "Barcode actions" %}' class='btn btn-default dropdown-toggle' type='button' data-toggle='dropdown'><span class='fas fa-qrcode'></span> <span class='caret'></span></button>
         <ul class='dropdown-menu' role='menu'>
             <li><a href='#' id='show-qr-code'><span class='fas fa-qrcode'></span> {% trans "Show QR Code" %}</a></li>
-            <li class='disabled'><a href='#' id='print-label'><span class='fas fa-tag'></span> {% trans "Print Label" %}</a></li>
+            <li><a href='#' id='print-label'><span class='fas fa-tag'></span> {% trans "Print Label" %}</a></li>
             {% if item.uid %}
             <li><a href='#' id='unlink-barcode'><span class='fas fa-unlink'></span> {% trans "Unlink Barcode" %}</a></li>
             {% else %}
@@ -126,7 +126,7 @@ InvenTree | {% trans "Stock Item" %} - {{ item }}
     </div>
     {% if item.part.has_test_report_templates %}
     <button type='button' class='btn btn-default' id='stock-test-report' title='{% trans "Generate test report" %}'>
-        <span class='fas fa-tasks'/>
+        <span class='fas fa-file-invoice'/>
     </button>
     {% endif %}
 </div>
@@ -314,6 +314,15 @@ $("#stock-test-report").click(function() {
 });
 {% endif %}
 
+$("#print-label").click(function() {
+    launchModalForm(
+        "{% url 'stock-item-label-select' item.id %}",
+        {
+            follow: true,
+        }
+    )
+});
+
 $("#stock-duplicate").click(function() {
     launchModalForm(
         "{% url 'stock-item-create' %}",

InvenTree/stock/urls.py

@@ -29,6 +29,7 @@ stock_item_detail_urls = [
     url(r'^add_tracking/', views.StockItemTrackingCreate.as_view(), name='stock-tracking-create'),
 
     url(r'^test-report-select/', views.StockItemTestReportSelect.as_view(), name='stock-item-test-report-select'),
+    url(r'^label-select/', views.StockItemSelectLabels.as_view(), name='stock-item-label-select'),
 
     url(r'^test/', views.StockItemDetail.as_view(template_name='stock/item_tests.html'), name='stock-item-test-results'),
     url(r'^children/', views.StockItemDetail.as_view(template_name='stock/item_childs.html'), name='stock-item-children'),
@@ -59,6 +60,7 @@ stock_urls = [
     url(r'^item/new/?', views.StockItemCreate.as_view(), name='stock-item-create'),
 
     url(r'^item/test-report-download/', views.StockItemTestReportDownload.as_view(), name='stock-item-test-report-download'),
+    url(r'^item/print-stock-labels/', views.StockItemPrintLabels.as_view(), name='stock-item-print-labels'),
 
     # URLs for StockItem attachments
     url(r'^item/attachment/', include([

InvenTree/stock/views.py

@@ -28,6 +28,7 @@ from datetime import datetime
 from company.models import Company, SupplierPart
 from part.models import Part
 from report.models import TestReport
+from label.models import StockItemLabel
 from .models import StockItem, StockLocation, StockItemTracking, StockItemAttachment, StockItemTestResult
 
 from .admin import StockItemResource
@@ -295,6 +296,88 @@ class StockItemReturnToStock(AjaxUpdateView):
         return self.renderJsonResponse(request, self.get_form(), data)
 
 
+class StockItemSelectLabels(AjaxView):
+    """
+    View for selecting a template for printing labels for one (or more) StockItem objects
+    """
+
+    model = StockItem
+    ajax_form_title = _('Select Label Template')
+
+    def get_form(self):
+
+        item = StockItem.objects.get(pk=self.kwargs['pk'])
+
+        labels = []
+
+        for label in StockItemLabel.objects.all():
+            if label.matches_stock_item(item):
+                labels.append(label)
+
+        return StockForms.StockItemLabelSelectForm(labels)
+
+    def post(self, request, *args, **kwargs):
+
+        label = request.POST.get('label', None)
+
+        try:
+            label = StockItemLabel.objects.get(pk=label)
+        except (ValueError, StockItemLabel.DoesNotExist):
+            raise ValidationError({'label': _("Select valid label")})
+    
+        stock_item = StockItem.objects.get(pk=self.kwargs['pk'])
+
+        url = reverse('stock-item-print-labels')
+
+        url += '?label={pk}'.format(pk=label.pk)
+        url += '&items[]={pk}'.format(pk=stock_item.pk)
+
+        data = {
+            'form_valid': True,
+            'url': url,
+        }
+
+        return self.renderJsonResponse(request, self.get_form(), data=data)
+
+
+class StockItemPrintLabels(AjaxView):
+    """
+    View for printing labels and returning a PDF
+
+    Requires the following arguments to be passed as URL params:
+
+    items: List of valid StockItem pk values
+    label: Valid pk of a StockItemLabel template
+    """
+
+    def get(self, request, *args, **kwargs):
+
+        label = request.GET.get('label', None)
+
+        try:
+            label = StockItemLabel.objects.get(pk=label)
+        except (ValueError, StockItemLabel.DoesNotExist):
+            raise ValidationError({'label': 'Invalid label ID'})
+
+        item_pks = request.GET.getlist('items[]')
+
+        items = []
+
+        for pk in item_pks:
+            try:
+                item = StockItem.objects.get(pk=pk)
+                items.append(item)
+            except (ValueError, StockItem.DoesNotExist):
+                pass
+
+        if len(items) == 0:
+            raise ValidationError({'items': 'Must provide valid stockitems'})
+
+        pdf = label.render(items).getbuffer()
+
+        return DownloadFile(pdf, 'stock_labels.pdf', content_type='application/pdf')
+
+
 class StockItemDeleteTestData(AjaxUpdateView):
     """
     View for deleting all test data

Makefile

@@ -51,12 +51,12 @@ style:
 # Run unit tests
 test:
 	cd InvenTree && python3 manage.py check
-	cd InvenTree && python3 manage.py test barcode build common company order part report stock InvenTree
+	cd InvenTree && python3 manage.py test barcode build common company label order part report stock InvenTree
 
 # Run code coverage
 coverage:
 	cd InvenTree && python3 manage.py check
-	coverage run InvenTree/manage.py test barcode build common company order part report stock InvenTree
+	coverage run InvenTree/manage.py test barcode build common company label order part report stock InvenTree
 	coverage html
 
 # Install packages required to generate code docs

requirements.txt

@@ -1,6 +1,7 @@
 wheel>=0.34.2                   # Wheel
 Django==3.0.7                   # Django package
 pillow==7.1.0                   # Image manipulation
+blabel==0.1.3                   # Simple PDF label printing
 djangorestframework==3.10.3     # DRF framework
 django-dbbackup==3.3.0          # Database backup / restore functionality
 django-cors-headers==3.2.0      # CORS headers extension for DRF
@@ -22,3 +23,4 @@ rapidfuzz==0.7.6                # Fuzzy string matching
 django-stdimage==5.1.1          # Advanced ImageField management
 django-tex==1.1.7               # LaTeX PDF export
 django-weasyprint==1.0.1        # HTML PDF export
+django-debug-toolbar==2.2       # Debug / profiling toolbar