feat: don't show collection date of response rate if there is no survey data

app/presenters/response_rate_presenter.rb

@@ -15,7 +15,7 @@ class ResponseRatePresenter
 
   def date
     SurveyItemResponse.where(survey_item: survey_items, school:,
-                             academic_year:).order(recorded_date: :DESC).first&.recorded_date || Date.today
+                             academic_year:).order(recorded_date: :DESC).first&.recorded_date
   end
 
   def percentage
@@ -28,7 +28,15 @@ class ResponseRatePresenter
     percentage > 75 ? "purple" : "gold"
   end
 
+  def date_message
+    return "" if date.nil?
+
+    "Response rate as of #{date.to_date.strftime('%m/%d/%y')}"
+  end
+
   def hover_message
+    return "" if date.nil?
+
     "Percentages based on #{actual_count} out of #{respondents_count.round} #{focus}s completing at least 25% of the survey."
   end
 

app/views/overview/_response_rate.html.erb

@@ -5,7 +5,7 @@
   data-bs-content="<%= response_rate_presenter.hover_message %>"
   data-bs-placement="top"
 >
-  <div>Response Rates as of <%= response_rate_presenter.date.to_date.strftime("%m/%d/%y") %> </div>
+  <div><%= response_rate_presenter.date_message  %> </div>
   <div style="display: flex; justify-content:space-between; width: 100px;">
   <div><%= response_rate_presenter.focus.capitalize %> </div>
   <%= render partial: "response_rate_graphic", locals: {response_rate_presenter: response_rate_presenter}, cached: true %>