Display inferred local authority

app/models/location.rb

@@ -199,6 +199,7 @@ private
     unless location_admin_district_changed?
       self.location_admin_district = nil
       self.location_code = nil
+      self.is_la_inferred = false
     end
     if result
       self.location_code = result[:location_code]

app/views/locations/check_answers.html.erb

@@ -18,15 +18,24 @@
   <div class="govuk-grid-column-two-thirds-from-desktop">
     <%= govuk_summary_list do |summary_list| %>
       <% display_location_attributes_for_check_answers(@location).each do |attr| %>
+        <% unless attr[:attribute].eql?("local_authority") && @location.is_la_inferred %>
           <%= summary_list.row do |row| %>
             <% row.key { attr[:name] } %>
+            <% if attr[:attribute].eql?("postcode") && @location.is_la_inferred %>
+                <% row.value do %>
+                <%= details_html(attr) %>
+                <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= formatted_local_authority_timeline(@location) %></span>
+                <% end %>
+            <% else %>
               <% row.value { details_html(attr) } %>
+            <% end %>
             <% if LocationPolicy.new(current_user, @location).update? %>
               <% row.action(text: action_text_helper(attr, @location), href: location_edit_path(@location, attr[:attribute])) %>
             <% end %>
           <% end %>
         <% end %>
       <% end %>
+    <% end %>
   </div>
 </div>
 

app/views/locations/show.html.erb

@@ -15,9 +15,19 @@
 
     <%= govuk_summary_list do |summary_list| %>
       <% display_location_attributes(@location).each do |attr| %>
+        <% unless attr[:attribute].eql?("local_authority") && @location.is_la_inferred %>
           <%= summary_list.row do |row| %>
             <% row.key { attr[:name] } %>
-          <% row.value { attr[:attribute].eql?("status") ? status_tag_from_resource(@location) : details_html(attr) } %>
+            <% if attr[:attribute].eql?("status") %>
+              <%= row.value { status_tag_from_resource(@location) } %>
+            <% elsif attr[:attribute].eql?("postcode") && @location.is_la_inferred %>
+              <% row.value do %>
+                <%= details_html(attr) %>
+                <span class="govuk-!-font-weight-regular app-!-colour-muted"><%= formatted_local_authority_timeline(@location) %></span>
+              <% end %>
+            <% else %>
+              <%= row.value { details_html(attr) } %>
+            <% end %>
             <% if LocationPolicy.new(current_user, @location).update? %>
               <% row.action(text: "Change", href: scheme_location_postcode_path(@scheme, @location, referrer: "details")) if attr[:attribute] == "postcode" && current_user.support? %>
               <% row.action(text: "Change", href: scheme_location_name_path(@scheme, @location, referrer: "details")) if attr[:attribute] == "name" %>
@@ -28,6 +38,7 @@
           <% end %>
         <% end %>
        <% end %>
+    <% end %>
   </div>
 </div>
 

spec/requests/locations_controller_spec.rb

@@ -466,7 +466,7 @@ RSpec.describe LocationsController, type: :request do
 
         it "redirects correctly when postcodes.io does return a local authority" do
           follow_redirect!
-          expect(page).to have_content("What is the local authority")
+          expect(page).to have_content("What is the name of this location")
         end
       end
 
@@ -527,7 +527,7 @@ RSpec.describe LocationsController, type: :request do
 
         it "redirects correctly when postcodes.io does return a local authority" do
           follow_redirect!
-          expect(page).to have_content("What is the local authority")
+          expect(page).to have_content("What is the name of this location")
         end
       end
 
@@ -1344,6 +1344,38 @@ RSpec.describe LocationsController, type: :request do
             expect(page).not_to have_content("added to this scheme")
           end
         end
+
+        context "when local authority is inferred" do
+          let(:params) { { location: { postcode: "zz1 1zz" } } }
+
+          before do
+            patch "/schemes/#{scheme.id}/locations/#{location.id}/postcode?referrer=check_answers", params:
+          end
+
+          it "does not display local authority row" do
+            location.reload
+            follow_redirect!
+            expect(location.is_la_inferred).to eq(true)
+            expect(location.location_admin_district).to eq("Westminster")
+            expect(page).not_to have_content("Local authority")
+            expect(page).to have_content("Westminster")
+          end
+        end
+
+        context "when local authority is not inferred" do
+          let(:params) { { location: { postcode: "a1 1aa" } } }
+
+          before do
+            patch "/schemes/#{scheme.id}/locations/#{location.id}/postcode?referrer=check_answers", params:
+          end
+
+          it "displays local authority row" do
+            location.reload
+            get "/schemes/#{scheme.id}/locations/#{location.id}/check-answers"
+            expect(location.is_la_inferred).to eq(false)
+            expect(page).to have_content("Local authority")
+          end
+        end
       end
 
       context "when trying to edit check_answers of location that belongs to another organisation" do