.

longs/tables.py

@@ -34,12 +34,12 @@ class LongImageColumn(tables.Column):
 
 class LongSeriesImageColumn(tables.Column):
     def render(self, value):
-        obj = value.first()
+        obj = value.all()
 
-        if obj is None:
+        if not obj:
             return "None"
 
-        image_object = obj.image
+        image_object = obj[0].image
         try:
             thumbnailer = get_thumbnailer(image_object)
             return format_html('<img src="/media/{}" /><br/>[{}]', thumbnailer["exam-list"], value.count())
@@ -73,6 +73,15 @@ class LongTable(tables.Table):
         fields = ("description", "history", "created_date", "author")
         sequence = ("view", "series", "exams")
 
+    def __init__(self, data=None, *args, **kwargs):
+        super().__init__(
+            data.prefetch_related(
+                "series", "author", "exams", "series__images", "series__examination", "series__plane", "series__contrast"
+            ),
+            *args,
+            **kwargs,
+        )
+
 class PopupLinkColumn(tables.Column):
     def render(self, value):
         return format_html("<span>test: {}<span>", value)
@@ -111,6 +120,15 @@ class LongSeriesTable(tables.Table):
         fields = ("modality", "examination", "description", "author")
         sequence = ("view", "popup", "images", "long")
 
+    def __init__(self, data=None, *args, **kwargs):
+        super().__init__(
+            data.prefetch_related(
+                "long", "long__series", "images", "author", "examination", "plane", "contrast", "modality"
+            ),
+            *args,
+            **kwargs,
+        )
+
     def render_popup(self, value, record):
         print(self)
         return format_html("""<a href="#" onclick="return window.create_popup_window('/longs/series/{}', 'Series')" >Popup</a>""", record.pk)