Handle zero values in adoption rate chart

tramlinehq · Jan 9, 2025 · d0c697f · d0c697f
1 parent 54a7ed2
commit d0c697f
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/app/components/v2/release_monitoring_component.rb b/app/components/v2/release_monitoring_component.rb
@@ -75,7 +75,9 @@ def adoption_chart_data
     @chart_data ||= parent_release
       .release_health_metrics
       .group_by_day(:fetched_at, range: range_start..range_end)
-      .maximum("round(CAST(sessions_in_last_day::float * 100 / total_sessions_in_last_day::float as numeric), 2)")
+      .maximum("CASE WHEN total_sessions_in_last_day = 0 THEN 0
+                     ELSE round(CAST(sessions_in_last_day::float * 100 / total_sessions_in_last_day::float as numeric), 2)
+                END")
       .compact
       .map { |k, v| [k.strftime("%d %b"), {adoption_rate: v, rollout_percentage: store_rollout.rollout_percentage_at(k)}] }
       .last(10)