fixes for nb3;

Makefile

@@ -1,6 +1,5 @@
 PYTHON_VER?=3.7
-NETBOX_VER?=v2.11.6
-
+NETBOX_VER?=v3.0.7
 
 NAME=netbox-qrcode
 

netbox_qrcode/template_content.py

@@ -1,5 +1,8 @@
+from packaging import version
 
+from django.conf import settings
 from django.core.exceptions import ObjectDoesNotExist
+
 from extras.plugins import PluginTemplateExtension
 
 from .utilities import get_img_b64, get_qr, get_qr_text, get_concat
@@ -54,9 +57,14 @@ def x_page(self):
         else:
             img = get_img_b64(qr_img)
         try:
-            return self.render(
-                'netbox_qrcode/qrcode.html', extra_context={'image': img}
-            )
+            if version.parse(settings.VERSION).major >= 3:
+                return self.render(
+                    'netbox_qrcode/qrcode3.html', extra_context={'image': img}
+                )
+            else:
+                return self.render(
+                    'netbox_qrcode/qrcode.html', extra_context={'image': img}
+                )
         except ObjectDoesNotExist:
             return ''
 

netbox_qrcode/templates/netbox_qrcode/qrcode3.html

@@ -0,0 +1,20 @@
+<script type="text/javascript">
+    function printImg(source) {
+        var win = window.open('');
+        win.document.write('<img src="' + source + '" onload="window.print();window.close()" />');
+        win.focus();
+    }
+</script>
+<div class="card">
+    <h5 class="card-header">
+        <strong>QR Code</strong>
+    </h5>
+    <div class="card-body text-right noprint">
+        <img src="data:image/png;base64,{{image}}" />
+    </div>
+    <div class="card-footer text-end noprint">
+        <button onclick="printImg('data:image/png;base64,{{image}}')" ; class="btn btn-xs btn-primary">
+            <span class="mdi mdi-printer" aria-hidden="true"></span> Print
+        </button>
+    </div>
+</div>