.

atlas/forms.py

@@ -38,6 +38,19 @@ class SeriesFindingsForm(ModelForm):
         model = SeriesFindings
         exclude = [""]
 
+    def __init__(self, *args, **kwargs):
+        if kwargs.get("series_id"):
+            # We get the 'initial' keyword argument or initialize it
+            # as a dict if it didn't exist.
+            initial = kwargs.setdefault("initial", {})
+            # The widget for a ModelMultipleChoiceField expects
+            # a list of primary key for the selected data.
+            initial["series"] = kwargs["series_id"].id
+
+        super(SeriesFindingsForm, self).__init__(*args, **kwargs)
+
+        ModelForm.__init__(self, *args, **kwargs)
+
 class SeriesForm(ModelForm):
     class Media:
         # Django also includes a few javascript files necessary