Rename Part.URL -> part.link

- Previous migration needed some tweaking to get it to run... because.. why?
- It seems to pass when running manage.py migrate but fails when running manage.py test
- Stumped on this one

.gitignore

@@ -6,6 +6,7 @@ __pycache__/
 # Distribution / packaging
 .Python
 env/
+inventree-env/
 ./build/
 develop-eggs/
 dist/

InvenTree/part/api.py

@@ -200,7 +200,7 @@ class PartList(generics.ListCreateAPIView):
             'description',
             'keywords',
             'is_template',
-            'URL',
+            'link',
             'units',
             'minimum_stock',
             'trackable',
@@ -249,12 +249,6 @@ class PartList(generics.ListCreateAPIView):
             else:
                 item['category__name'] = None
 
-            # Rename "URL" to "link" to distinguish from lower-case "url",
-            # which is the web address of the item itself
-            if 'URL' in item.keys():
-                item['link'] = item['URL']
-                del item['URL']
-
         return Response(data)
 
     def get_queryset(self):

InvenTree/part/forms.py

@@ -120,7 +120,7 @@ class EditPartForm(HelperForm):
             'keywords',
             'variant_of',
             'is_template',
-            'URL',
+            'link',
             'default_location',
             'default_supplier',
             'units',

InvenTree/part/migrations/0034_auto_20200404_1238.py

@@ -1,6 +1,7 @@
 # Generated by Django 2.2.10 on 2020-04-04 12:38
 
 from django.db import migrations
+from django.db.utils import OperationalError
 
 from part.models import Part
 from stdimage.utils import render_variations
@@ -11,11 +12,13 @@ def create_thumbnails(apps, schema_editor):
     Create thumbnails for all existing Part images.
     """
 
+    try:
         for part in Part.objects.all():
             # Render thumbnail for each existing Part 
             if part.image:
                 part.image.render_variations()
-
+    except OperationalError:
+        print("Error - could not generate Part thumbnails")
 
 class Migration(migrations.Migration):
 

InvenTree/part/migrations/0035_auto_20200406_0045.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.10 on 2020-04-06 00:45
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0034_auto_20200404_1238'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='part',
+            old_name='URL',
+            new_name='link',
+        ),
+    ]

InvenTree/part/models.py

@@ -214,7 +214,7 @@ class Part(models.Model):
         IPN: Internal part number (optional)
         revision: Part revision
         is_template: If True, this part is a 'template' part and cannot be instantiated as a StockItem
-        URL: Link to an external page with more information about this part (e.g. internal Wiki)
+        link: Link to an external page with more information about this part (e.g. internal Wiki)
         image: Image of this part
         default_location: Where the item is normally stored (may be null)
         default_supplier: The default SupplierPart which should be used to procure and stock this part
@@ -383,7 +383,7 @@ class Part(models.Model):
 
     revision = models.CharField(max_length=100, blank=True, help_text=_('Part revision or version number'))
 
-    URL = InvenTreeURLField(blank=True, help_text=_('Link to extenal URL'))
+    link = InvenTreeURLField(blank=True, help_text=_('Link to extenal URL'))
 
     image = StdImageField(
         upload_to=rename_part_image,

InvenTree/part/serializers.py

@@ -86,7 +86,6 @@ class PartSerializer(InvenTreeModelSerializer):
     on_order = serializers.FloatField(read_only=True)
     thumbnail = serializers.CharField(source='get_thumbnail_url', read_only=True)
     url = serializers.CharField(source='get_absolute_url', read_only=True)
-    link = serializers.CharField(source='URL')
     used_in = serializers.IntegerField(source='used_in_count', read_only=True)
 
     @staticmethod

InvenTree/part/templates/part/detail.html

@@ -60,11 +60,11 @@
                 {% endif %}
             </td>
         </tr>
-        {% if part.URL %}
+        {% if part.link %}
         <tr>
             <td><span class='fas fa-link'></span></td>
-            <td><b>{% trans "Link" %}</b></td>
-            <td><a href="{{ part.URL }}">{{ part.URL }}</a></td>
+            <td><b>{% trans "External Link" %}</b></td>
+            <td><a href="{{ part.link }}">{{ part.link }}</a></td>
         </tr>
         {% endif %}
         {% if part.default_location %}

InvenTree/part/templates/part/part_base.html

@@ -72,14 +72,16 @@
         <table class='table table-condensed'>
             {% if part.IPN %}
             <tr>
+                <td></td>
                 <td>{% trans "IPN" %}</td>
                 <td>{{ part.IPN }}</td>
             </tr>
             {% endif %}
-            {% if part.URL %}
+            {% if part.link %}
             <tr>
-                <td>{% trans "URL" %}</td>
-                <td><a href="{{ part.URL }}">{{ part.URL }}</a></td>
+                <td><span class='fas fa-link'></span></td>
+                <td>{% trans "External Link" %}</td>
+                <td><a href="{{ part.link }}">{{ part.link }}</a></td>
             </tr>
             {% endif %}
             <tr>

InvenTree/part/views.py

@@ -1388,8 +1388,6 @@ class BomExport(AjaxView):
         url += '?file_format=' + fmt
         url += '&cascade=' + str(cascade)
 
-        print("URL:", url)
-
         data = {
             'form_valid': part is not None,
             'url': url,