Refactor NormalCase model: remove 'added_by' field, add 'author' ManyToManyField; update related views and templates for editing functionality

atlas/admin.py

@@ -82,7 +82,7 @@ admin.site.register(CaseCollection, CaseCollectionAdmin)
 
 
 class NormalCaseAdmin(VersionAdmin):
-    list_display = ("case", "display_age", "examination", "modality", "added_by", "added_date")
+    list_display = ("case", "display_age", "examination", "modality", "added_date")
     list_filter = ("examination", "modality")
     search_fields = ("case__title", "case__pk")
 

atlas/migrations/0091_remove_normalcase_added_by.py

@@ -0,0 +1,17 @@
+# Generated by Django 6.0.1 on 2026-02-16 13:28
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('atlas', '0090_casecollection_created_casecollection_updated'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='normalcase',
+            name='added_by',
+        ),
+    ]

atlas/migrations/0092_normalcase_author.py

@@ -0,0 +1,20 @@
+# Generated by Django 6.0.1 on 2026-02-16 13:29
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('atlas', '0091_remove_normalcase_added_by'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='normalcase',
+            name='author',
+            field=models.ManyToManyField(blank=True, related_name='normal_cases', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

atlas/models.py

@@ -766,7 +766,7 @@ class Case(models.Model, AuthorMixin, QuestionMixin):
         return json.dumps(results)
 
 
-class NormalCase(models.Model):
+class NormalCase(models.Model, AuthorMixin):
     """Marks a Case as a 'normal' example used in the Atlas normals section.
 
     This version stores a canonical `age_days` integer (patient age in days).
@@ -819,16 +819,15 @@ class NormalCase(models.Model):
         help_text="Primary modality for this normal case (optional).",
     )
 
-    added_by = models.ForeignKey(
-        settings.AUTH_USER_MODEL,
-        null=True,
-        blank=True,
-        on_delete=models.SET_NULL,
-        related_name="added_normals",
-    )
-
     added_date = models.DateTimeField(default=timezone.now)
 
+
+    author = models.ManyToManyField(
+        settings.AUTH_USER_MODEL,
+        blank=True,
+        related_name="normal_cases",
+    )
+
     notes = models.TextField(null=True, blank=True)
 
     class Meta:

atlas/templates/atlas/normals_list.html

@@ -30,7 +30,8 @@
     {% if page_obj.object_list %}
       <div class="list-group">
         {% for normal in page_obj.object_list %}
-          <a class="list-group-item list-group-item-action" href="{% url 'atlas:case_detail' normal.case.pk %}">
+          <div class="list-group-item d-flex justify-content-between align-items-start">
+            <a class="flex-grow-1 text-decoration-none text-reset" href="{% url 'atlas:case_detail' normal.case.pk %}">
             <div class="d-flex w-100 justify-content-between">
               <h5 class="mb-1">{{ normal.case.title }}</h5>
               <small class="text-muted">{{ normal.added_date|date:"Y-m-d" }}</small>
@@ -43,7 +44,18 @@
             {% if normal.notes %}
               <p class="mb-0 text-muted">{{ normal.notes }}</p>
             {% endif %}
-          </a>
+            </a>
+            <div class="ms-2">
+              {% if request.user.is_superuser or request.user in normal.author.all %}
+                <button class="btn btn-sm btn-outline-secondary"
+                        hx-get="{% url 'atlas:case_normal_edit' normal.pk %}"
+                        hx-target="body"
+                        hx-swap="beforeend">
+                  Edit
+                </button>
+              {% endif %}
+            </div>
+          </div>
         {% endfor %}
       </div>
     {% else %}

atlas/templates/atlas/partials/_normal_form.html

@@ -1,10 +1,10 @@
 <div id="normal-modal-{{ case.pk }}" class="modal modal-blur fade" tabindex="-1" role="dialog" aria-hidden="true">
   <div class="modal-dialog modal-lg modal-dialog-centered" role="document">
     <div class="modal-content">
-      <form method="post" hx-post="{% url 'atlas:case_create_normal' case.pk %}" hx-target="#normal-toggle-block" hx-swap="outerHTML">
+      <form method="post" hx-post="{% if normal %}{% url 'atlas:case_normal_edit' normal.pk %}{% else %}{% url 'atlas:case_create_normal' case.pk %}{% endif %}" hx-target="#normal-toggle-block" hx-swap="outerHTML">
         {% csrf_token %}
         <div class="modal-header">
-          <h5 class="modal-title">Mark case {{ case.pk }} as Normal</h5>
+          <h5 class="modal-title">{% if normal %}Edit normal for case {{ case.pk }}{% else %}Mark case {{ case.pk }} as Normal{% endif %}</h5>
           <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
         </div>
         <div class="modal-body">

atlas/templates/atlas/partials/_normal_toggle.html

@@ -4,15 +4,27 @@
   {% if case.normal_case %}
     <span class="badge bg-success">Normal</span>
     <small class="text-muted">{{ case.normal_case.display_age }}</small>
-    {% if can_edit %}
-      <button class="btn btn-sm btn-outline-danger ms-2"
-              hx-post="{% url 'atlas:case_toggle_normal' case.pk %}"
-              hx-target="#normal-toggle-block"
-              hx-swap="outerHTML"
-              hx-confirm="Unmark this case as normal?">
-        Unmark normal
-      </button>
-    {% endif %}
+    <span>
+      {% if can_edit %}
+        <button class="btn btn-sm btn-outline-danger ms-2"
+                hx-post="{% url 'atlas:case_toggle_normal' case.pk %}"
+                hx-target="#normal-toggle-block"
+                hx-swap="outerHTML"
+                hx-confirm="Unmark this case as normal?">
+          Unmark normal
+        </button>
+      {% endif %}
+
+      {# Allow NormalCase authors (or atlas editors/superusers) to edit the Normal metadata #}
+      {% if case.normal_case and (request.user.is_superuser or request.user in case.normal_case.author.all or can_edit) %}
+        <button class="btn btn-sm btn-outline-secondary ms-2"
+                hx-get="{% url 'atlas:case_normal_edit' case.normal_case.pk %}"
+                hx-target="body"
+                hx-swap="beforeend">
+          Edit Normal
+        </button>
+      {% endif %}
+    </span>
   {% else %}
     {% if can_edit %}
       <button class="btn btn-sm btn-outline-primary"

atlas/urls.py

@@ -541,6 +541,7 @@ urlpatterns = [
     path("case/<int:pk>/toggle_normal/", views.toggle_case_normal, name="case_toggle_normal"),
     path("case/<int:pk>/normal_form/", views.case_normal_form, name="case_normal_form"),
     path("case/<int:pk>/create_normal/", views.create_case_normal, name="case_create_normal"),
+    path("normal/<int:pk>/edit/", views.case_normal_edit, name="case_normal_edit"),
     # path("case/<int:pk>/collection-form", views.AddCollectionToCaseView.as_view(), name="case_collection_form"),
     path(
         "case/<int:case_id>/collection-form",

atlas/views.py

@@ -347,7 +347,7 @@ class NormalCaseList(LoginRequiredMixin, FilterView):
     paginate_by = 25
 
     def get_queryset(self):
-        qs = NormalCase.objects.select_related("case", "examination", "modality", "added_by")
+        qs = NormalCase.objects.select_related("case", "examination", "modality")
         # Restrict similar to CaseFilter: non-editors only see authored or open_access
         if not self.request.user.groups.filter(name="atlas_editor").exists():
             qs = qs.filter((Q(case__author__id=self.request.user.id) | Q(case__open_access=True)))
@@ -847,7 +847,7 @@ def create_case_normal(request, pk):
         logger.debug("NormalCaseForm.cleaned_data: {}", form.cleaned_data)
         nc = form.save(commit=False)
         nc.case = case
-        nc.added_by = request.user
+        nc.author.add(request.user)
         nc.save()
 
         # Ensure the case reflects the newly created NormalCase when rendering
@@ -874,6 +874,54 @@ def create_case_normal(request, pk):
         html = render_to_string("atlas/partials/_normal_form.html", {"form": form, "case": case}, request=request)
         return HttpResponse(html, status=400)
 
+
+@login_required
+@require_http_methods(["GET", "POST"])
+def case_normal_edit(request, pk):
+    """Edit an existing NormalCase. Accessible to NormalCase authors and atlas editors."""
+    normal = get_object_or_404(NormalCase, pk=pk)
+
+    # Permission: allow NormalCase authors or atlas editors/superusers
+    is_atlas_editor = request.user.is_superuser or request.user.groups.filter(name="atlas_editor").exists()
+    is_normal_author = normal.author.filter(id=request.user.id).exists()
+    if not (is_atlas_editor or is_normal_author):
+        return HttpResponse(status=403)
+
+    from .forms import NormalCaseForm
+
+    if request.method == "POST":
+        form = NormalCaseForm(request.POST, instance=normal)
+        if form.is_valid():
+            nc = form.save(commit=False)
+            nc.save()
+            form.save_m2m()
+
+            # Ensure the case reflects any updates
+            try:
+                if hasattr(nc.case, "normal_case"):
+                    delattr(nc.case, "normal_case")
+            except Exception:
+                pass
+
+            case = get_case_for_case_detail(nc.case.pk)
+            is_case_author = case.author.filter(id=request.user.id).exists()
+            can_edit = case.check_user_can_edit(request.user)
+            toggle_html = render_to_string(
+                "atlas/partials/_normal_toggle.html",
+                {"case": case, "user": request.user, "is_atlas_editor": is_atlas_editor, "is_case_author": is_case_author, "can_edit": can_edit},
+                request=request,
+            )
+            toggle_html += "<script>var m = bootstrap.Modal.getOrCreateInstance(document.getElementById('normal-modal-{}')); if(m) m.hide();</script>".format(case.pk)
+            return HttpResponse(toggle_html)
+        else:
+            html = render_to_string("atlas/partials/_normal_form.html", {"form": form, "case": normal.case, "normal": normal}, request=request)
+            return HttpResponse(html, status=400)
+
+    # GET - render form in modal
+    form = NormalCaseForm(instance=normal)
+    html = render_to_string("atlas/partials/_normal_form.html", {"form": form, "case": normal.case, "normal": normal}, request=request)
+    return HttpResponse(html)
+
 @login_required
 @user_is_author_or_atlas_series_checker_or_atlas_marker_or_open_access
 def series_thumbnail_fail(request, pk):