Update SupplierPart model to allow data importing

- django-import-export plugin seems to require null=True for char fields
- yes, this goes against django "best practice"
- Hopefully a better solution can be found

InvenTree/company/admin.py

@@ -38,7 +38,9 @@ class CompanyAdmin(ImportExportModelAdmin):
 
 
 class SupplierPartResource(ModelResource):
-    """ Class for managing SupplierPart data import/export """
+    """
+    Class for managing SupplierPart data import/export
+    """
 
     part = Field(attribute='part', widget=widgets.ForeignKeyWidget(Part))
 
@@ -51,7 +53,7 @@ class SupplierPartResource(ModelResource):
     class Meta:
         model = SupplierPart
         skip_unchanged = True
-        report_skipped = False
+        report_skipped = True
         clean_model_instances = True
 
 

InvenTree/company/migrations/0031_auto_20210103_2215.py

@@ -0,0 +1,61 @@
+# Generated by Django 3.0.7 on 2021-01-03 11:15
+
+import InvenTree.fields
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0060_merge_20201112_1722'),
+        ('company', '0030_auto_20201112_1112'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='MPN',
+            field=models.CharField(blank=True, help_text='Manufacturer part number', max_length=100, null=True, verbose_name='MPN'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='SKU',
+            field=models.CharField(help_text='Supplier stock keeping unit', max_length=100, verbose_name='SKU'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='description',
+            field=models.CharField(blank=True, help_text='Supplier part description', max_length=250, null=True, verbose_name='Description'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='link',
+            field=InvenTree.fields.InvenTreeURLField(blank=True, help_text='URL for external supplier part link', null=True, verbose_name='Link'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='manufacturer',
+            field=models.ForeignKey(blank=True, help_text='Select manufacturer', limit_choices_to={'is_manufacturer': True}, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='manufactured_parts', to='company.Company', verbose_name='Manufacturer'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='note',
+            field=models.CharField(blank=True, help_text='Notes', max_length=100, null=True, verbose_name='Note'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='packaging',
+            field=models.CharField(blank=True, help_text='Part packaging', max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='part',
+            field=models.ForeignKey(help_text='Select part', limit_choices_to={'purchaseable': True}, on_delete=django.db.models.deletion.CASCADE, related_name='supplier_parts', to='part.Part', verbose_name='Base Part'),
+        ),
+        migrations.AlterField(
+            model_name='supplierpart',
+            name='supplier',
+            field=models.ForeignKey(help_text='Select supplier', limit_choices_to={'is_supplier': True}, on_delete=django.db.models.deletion.CASCADE, related_name='supplied_parts', to='company.Company', verbose_name='Supplier'),
+        ),
+    ]

InvenTree/company/models.py

@@ -313,7 +313,6 @@ class SupplierPart(models.Model):
                              verbose_name=_('Base Part'),
                              limit_choices_to={
                                  'purchaseable': True,
-                                 'is_template': False,
                              },
                              help_text=_('Select part'),
                              )
@@ -321,31 +320,55 @@ class SupplierPart(models.Model):
     supplier = models.ForeignKey(Company, on_delete=models.CASCADE,
                                  related_name='supplied_parts',
                                  limit_choices_to={'is_supplier': True},
+                                 verbose_name=_('Supplier'),
                                  help_text=_('Select supplier'),
                                  )
 
-    SKU = models.CharField(max_length=100, help_text=_('Supplier stock keeping unit'))
+    SKU = models.CharField(
+        max_length=100,
+        verbose_name=_('SKU'),
+        help_text=_('Supplier stock keeping unit')
+    )
 
     manufacturer = models.ForeignKey(
         Company,
         on_delete=models.SET_NULL,
         related_name='manufactured_parts',
-        limit_choices_to={'is_manufacturer': True},
+        limit_choices_to={
+            'is_manufacturer': True
+        },
+        verbose_name=_('Manufacturer'),
         help_text=_('Select manufacturer'),
         null=True, blank=True
     )
 
-    MPN = models.CharField(max_length=100, blank=True, help_text=_('Manufacturer part number'))
+    MPN = models.CharField(
+        max_length=100, blank=True, null=True,
+        verbose_name=_('MPN'),
+        help_text=_('Manufacturer part number')
+    )
 
-    link = InvenTreeURLField(blank=True, help_text=_('URL for external supplier part link'))
+    link = InvenTreeURLField(
+        blank=True, null=True,
+        verbose_name=_('Link'),
+        help_text=_('URL for external supplier part link')
+    )
 
-    description = models.CharField(max_length=250, blank=True, help_text=_('Supplier part description'))
+    description = models.CharField(
+        max_length=250, blank=True, null=True,
+        verbose_name=_('Description'),
+        help_text=_('Supplier part description')
+    )
 
-    note = models.CharField(max_length=100, blank=True, help_text=_('Notes'))
+    note = models.CharField(
+        max_length=100, blank=True, null=True,
+        verbose_name=_('Note'),
+        help_text=_('Notes')
+    )
 
     base_cost = models.DecimalField(max_digits=10, decimal_places=3, default=0, validators=[MinValueValidator(0)], help_text=_('Minimum charge (e.g. stocking fee)'))
 
-    packaging = models.CharField(max_length=50, blank=True, help_text=_('Part packaging'))
+    packaging = models.CharField(max_length=50, blank=True, null=True, help_text=_('Part packaging'))
     
     multiple = models.PositiveIntegerField(default=1, validators=[MinValueValidator(1)], help_text=('Order multiple'))