defined Meta ordering of the Item() model in apps.dashboard.models; Item() also now returns a __str__ result; in .forms, defined a specific use-case of is_valid() method; a pair of new UTs in .tests.test_models help confirm str representation and list order of items; .test_forms now ensures the .is-invalid bootstrap class is tested as a css class attr; migrations run; full UT & FT suite back to passing state (tho a refactor of flimsy form customizations is desperately needed)

src/apps/dashboard/forms.py

@@ -19,6 +19,12 @@ class ItemForm(forms.models.ModelForm):
         }
         error_messages = {"text": {"required": EMPTY_ITEM_ERROR}}
 
+    def is_valid(self):
+        result = super().is_valid()
+        if not result:
+            self.fields["text"].widget.attrs["class"] += " is-invalid"
+        return result
+    
     def save(self, for_list):
         self.instance.list = for_list
         return super().save()