Rename "barcode" module to "barcodes" to prevent import shadowing

- Add 'barcode' support

InvenTree/InvenTree/static/css/inventree.css

@@ -125,6 +125,7 @@
 .qr-container {
     width: 100%;
     align-content: center;
+    object-fit: fill;
 }
 
 .navbar-brand {

InvenTree/InvenTree/urls.py

@@ -20,7 +20,7 @@ from stock.urls import stock_urls
 from build.urls import build_urls
 from order.urls import order_urls
 
-from barcode.api import barcode_api_urls
+from barcodes.api import barcode_api_urls
 from common.api import common_api_urls
 from part.api import part_api_urls, bom_api_urls
 from company.api import company_api_urls

InvenTree/barcodes/api.py

@@ -12,7 +12,7 @@ from rest_framework.views import APIView
 from stock.models import StockItem
 from stock.serializers import StockItemSerializer
 
-from barcode.barcode import load_barcode_plugins, hash_barcode
+from barcodes.barcode import load_barcode_plugins, hash_barcode
 
 
 class BarcodeScan(APIView):

InvenTree/barcodes/barcode.py

@@ -5,7 +5,7 @@ import hashlib
 import logging
 
 from InvenTree import plugins as InvenTreePlugins
-from barcode import plugins as BarcodePlugins
+from barcodes import plugins as BarcodePlugins
 
 from stock.models import StockItem
 from stock.serializers import StockItemSerializer, LocationSerializer

InvenTree/barcodes/plugins/digikey_barcode.py

@@ -4,7 +4,7 @@
 DigiKey barcode decoding
 """
 
-from barcode.barcode import BarcodePlugin
+from barcodes.barcode import BarcodePlugin
 
 
 class DigikeyBarcodePlugin(BarcodePlugin):

InvenTree/barcodes/plugins/inventree_barcode.py

@@ -13,7 +13,7 @@ references model objects actually exist in the database.
 
 import json
 
-from barcode.barcode import BarcodePlugin
+from barcodes.barcode import BarcodePlugin
 
 from stock.models import StockItem, StockLocation
 from part.models import Part

InvenTree/report/templatetags/barcode.py

@@ -10,8 +10,8 @@ from io import BytesIO
 
 from django import template
 
-import qrcode
-import barcode
+import qrcode as python_qrcode
+import barcode as python_barcode
 
 register = template.Library()
 
@@ -32,7 +32,7 @@ def image_data(img, fmt='PNG'):
 
 
 @register.simple_tag()
-def qr_code(data, **kwargs):
+def qrcode(data, **kwargs):
     """
     Return a byte-encoded QR code image
 
@@ -54,11 +54,31 @@ def qr_code(data, **kwargs):
 
     params.update(**kwargs)
 
-    qr = qrcode.QRCode(**params)
+    qr = python_qrcode.QRCode(**params)
 
     qr.add_data(data, optimize=20)
     qr.make(fit=True)
 
     qri = qr.make_image(fill_color=fill_color, back_color=back_color)
 
-    return image_data(qri)
+    return image_data(qri)
+
+
+@register.simple_tag()
+def barcode(data, barcode_class='code128', **kwargs):
+    """
+    Render a barcode
+    """
+
+    constructor = python_barcode.get_barcode_class(barcode_class)
+
+    data = str(data).zfill(constructor.digits)
+
+    writer = python_barcode.writer.ImageWriter
+
+    barcode_image = constructor(data, writer=writer())
+
+    image = barcode_image.render(writer_options=kwargs)
+
+    # Render to byte-encoded PNG
+    return image_data(image)

InvenTree/templates/qr_code.html

@@ -4,7 +4,7 @@
 <div class='container' style='width: 80%;'>
     {% if qr_data %}
     <div class='qr-container'>
-        <img src="{% qr_code qr_data %}">
+        <img src="{% qrcode qr_data %}">
     </div>
     {% else %}
     <div class='alert alert-block alert-warning'>