Dataset unique elements

Closes #1713 (closed)

arkindex/training/admin.py

@@ -36,13 +36,20 @@ class DatasetSetInLine(admin.StackedInline):
 
 
 class DatasetAdmin(admin.ModelAdmin):
-    list_display = ("name", "corpus", "state")
+    list_display = ("name", "corpus", "state", "unique_elements")
     list_filter = (("state", EnumFieldListFilter), "corpus")
     search_fields = ("name", "description")
-    fields = ("id", "name", "created", "updated", "description", "corpus", "creator", "task")
+    fields = ("id", "name", "created", "updated", "description", "corpus", "creator", "task", "unique_elements")
     readonly_fields = ("id", "created", "updated", "task")
     inlines = [DatasetSetInLine, ]
 
+    def get_form(self, request, obj=None, **kwargs):
+        self.readonly_fields = self.__class__.readonly_fields
+        if obj is not None:
+            self.readonly_fields += ("unique_elements",)
+        form = super().get_form(request, obj=None, **kwargs)
+        return form
+
 
 admin.site.register(Model, ModelAdmin)
 admin.site.register(ModelVersion, ModelVersionAdmin)