Remove auto-generated English text from label and hover

Related to plotly/plotly.py#2876 (comment)

Related to plotly/plotly.py#3694

Author: brylie

project/work/views.py

@@ -92,18 +92,31 @@ def prepare_charts(self, context):
 
         work_by_caregiver_role_and_type = get_total_minutes_by_role_and_work_type()
 
-        context["work_by_caregiver_role_and_type_chart"] = px.histogram(
+        work_by_caregiver_role_and_type_chart = px.histogram(
             work_by_caregiver_role_and_type,
             x="role_name",
             y="total_minutes",
             color="work_type",
             title=_("Work minutes by caregiver role and work type"),
             labels={
                 "role_name": _("Caregiver role"),
-                "total_minutes": _("total minutes"),
-                "work_type": _("Type of work"),
+                "total_minutes": _("Total minutes"),
+                "work_type": _("Work type"),
             },
-        ).to_html()
+        
+        )
+
+        # Note: For correct localization, we need to remove the English text "sum of" from the
+        # y-axis label and hover template, as per the following comment.
+        # https://github.com/plotly/plotly.py/issues/2876#issuecomment-1111339561
+        #
+        # The feature request below asks for English texts to not be prepended
+        # to the axis label and hover template, which will hopefully obsolete the next lines of code.
+        # https://github.com/plotly/plotly.py/issues/3694
+        work_by_caregiver_role_and_type_chart.for_each_trace(lambda t: t.update(hovertemplate=t.hovertemplate.replace("sum of ", "")))
+        work_by_caregiver_role_and_type_chart.for_each_yaxis(lambda a: a.update(title_text=a.title.text.replace("sum of ", "")))
+
+        context["work_by_caregiver_role_and_type_chart"] = work_by_caregiver_role_and_type_chart.to_html()
 
         return context