Used buildin rendering of template class

inventree_zebra/zebra_plugin.py

@@ -3,24 +3,23 @@
 
 Supports direct printing of labels on label printers
 """
-import os
+# System stuff
+import socket
+from datetime import datetime
 
-# translation
+# Django stuff
 from django.utils.translation import gettext_lazy as _
 from django.core.validators import MinValueValidator
 from django.core.validators import MaxValueValidator
-from django.conf import settings
-from django.shortcuts import render
 
 # InvenTree plugin libs
 from plugin import InvenTreePlugin
 from plugin.mixins import LabelPrintingMixin, SettingsMixin
 
 # Zebra printer support
 import zpl
-import socket
 
-from inventree_zebra.version import ZEBRA_PLUGIN_VERSION
+from .version import ZEBRA_PLUGIN_VERSION
 
 
 class ZebraLabelPlugin(LabelPrintingMixin, SettingsMixin, InvenTreePlugin):
@@ -30,6 +29,7 @@ class ZebraLabelPlugin(LabelPrintingMixin, SettingsMixin, InvenTreePlugin):
     VERSION = ZEBRA_PLUGIN_VERSION
     NAME = "Zebra"
     SLUG = "zebra"
+    PUBLISH_DATE = datetime.today().strftime('%Y-%m-%d')
     TITLE = "Zebra Label Printer"
 
     SETTINGS = {
@@ -115,16 +115,7 @@ def print_label(self, **kwargs):
 
         # From here we need to distinguish between html templates and ZPL templates
         if zpl_template:
-            # Find the template file and load its content
-            template_file = os.path.join(settings.MEDIA_ROOT, 'report/label')
-            template_file = os.path.join(template_file, str(kwargs['context']['template']))
-
-            # Render the template
-            fields = {'object': kwargs['item_instance'], 'context': kwargs['context']}
-            try:
-                raw_zpl = str(render(None, template_file, fields).content, 'utf-8').replace('\n', '')
-            except Exception:
-                raise Exception('Error rendering ZPL template')
+            raw_zpl = kwargs['context']['template'].render_as_string(kwargs['item_instance'], None).replace('\n', '')
 
             # Create the zpl data
             li = zpl.Label(height, width, dpmm)

stockitem_50x30_zpl_001.html

@@ -1,11 +1,11 @@
 {% autoescape off %}
 ^FT30,25^A0N,18,22^FDIPN^FS
 ^FT150,30^FB100,1,,C,,^A0N,24,32^FDACME^FS
-^FT320,25^A0N,18,22^FD{{ object.pk }}^FS
-^FT100,70^FB200,2,,C,,^A0N,18,22^FD{{ object.part.name }}^FS
-^FT100,100^FB200,1,,C,,^A0N,18,22^FD{% for ma in object.part.manufacturer_parts.all %}{{ ma.manufacturer.name }}{% endfor %}^FS
-^FT30,150^FB340,1,,C,,^A0N,30,40^FD{{ object.part.IPN }}^FS
-^FT20,210^FB360,3,,L,,^A0N,18,22^FD{{ object.part.description }}^FS
-^FT15,110^BQ,2,3^FDQA,{{ object.part.IPN }}^FS
-^FT310,130^BQ,2,3^FDQA,{{ context.qr_data }}^FS
+^FT320,25^A0N,18,22^FD{{ item.pk }}^FS
+^FT100,70^FB200,2,,C,,^A0N,18,22^FD{{ part.name }}^FS
+^FT100,100^FB200,1,,C,,^A0N,18,22^FD{{ part.manufacturer_parts.first.manufacturer.name }}^FS
+^FT30,150^FB340,1,,C,,^A0N,30,40^FD{{ part.IPN }}^FS
+^FT20,210^FB360,3,,L,,^A0N,18,22^FD{{ part.description }}^FS
+^FT15,110^BQ,2,3^FDQA,{{ part.IPN }}^FS
+^FT310,130^BQ,2,3^FDQA,{{ qr_data }}^FS
 {% endautoescape %}