Support image uploads in the "notes" markdown fields (#4615)

* Support image uploads in the "notes" markdown fields

- Implemented using the existing EasyMDE library
- Copy / paste support
- Drag / drop support

* Remove debug message

* Updated API version

* Better UX when saving notes

* Pin PIP version (for testing)

* Bug fixes

- Fix typo
- Use correct serializer type

* Add unit testing

* Update role permissions

* Typo fix

* Update migration file

* Adds a notes mixin class to be used for refactoring

* Refactor existing models with notes to use the new mixin

* Add helper function for finding all model types with a certain mixin

* Refactor barcode plugin to use new method

* Typo fix

* Add daily task to delete old / unused notes

* Bug fix for barcode refactoring

* Add unit testing for function

InvenTree/part/migrations/0105_alter_part_notes.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.18 on 2023-04-19 00:37
+
+import InvenTree.fields
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0104_alter_part_description'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='part',
+            name='notes',
+            field=InvenTree.fields.InvenTreeNotesField(blank=True, help_text='Markdown notes (optional)', max_length=50000, null=True, verbose_name='Notes'),
+        ),
+    ]

InvenTree/part/models.py

@@ -43,10 +43,11 @@ from common.models import InvenTreeSetting
 from common.settings import currency_code_default
 from company.models import SupplierPart
 from InvenTree import helpers, validators
-from InvenTree.fields import InvenTreeNotesField, InvenTreeURLField
+from InvenTree.fields import InvenTreeURLField
 from InvenTree.helpers import decimal2money, decimal2string, normalize
 from InvenTree.models import (DataImportMixin, InvenTreeAttachment,
-                              InvenTreeBarcodeMixin, InvenTreeTree)
+                              InvenTreeBarcodeMixin, InvenTreeNotesMixin,
+                              InvenTreeTree)
 from InvenTree.status_codes import (BuildStatus, PurchaseOrderStatus,
                                     SalesOrderStatus)
 from order import models as OrderModels
@@ -338,7 +339,7 @@ class PartManager(TreeManager):
 
 
 @cleanup.ignore
-class Part(InvenTreeBarcodeMixin, MetadataMixin, MPTTModel):
+class Part(InvenTreeBarcodeMixin, InvenTreeNotesMixin, MetadataMixin, MPTTModel):
     """The Part object represents an abstract part, the 'concept' of an actual entity.
 
     An actual physical instance of a Part is a StockItem which is treated separately.
@@ -1016,8 +1017,6 @@ class Part(InvenTreeBarcodeMixin, MetadataMixin, MPTTModel):
         verbose_name=_('Virtual'),
         help_text=_('Is this a virtual part, such as a software product or license?'))
 
-    notes = InvenTreeNotesField(help_text=_('Part notes'))
-
     bom_checksum = models.CharField(max_length=128, blank=True, verbose_name=_('BOM checksum'), help_text=_('Stored BOM checksum'))
 
     bom_checked_by = models.ForeignKey(User, on_delete=models.SET_NULL, blank=True, null=True,