Send current tab reference when filtering with search form

app/components/sdg_management/relations/index_component.html.erb

@@ -7,6 +7,7 @@
   <%= component.select_tag :target_code, target_options,
                            include_blank: target_blank_option,
                            "aria-label": target_label %>
+  <%= component.hidden_field_tag :filter, current_filter %>
 <% end %>
 
 <%= render "shared/filter_subnav", i18n_namespace: "sdg_management.relations.index" %>

spec/system/sdg_management/relations_spec.rb

@@ -138,6 +138,7 @@ describe "SDG Relations", :js do
 
         expect(page).to have_content "Internet speech freedom"
         expect(page).not_to have_content "SDG interest"
+        expect(page).to have_css "li.is-active h2", exact_text: "Pending"
       end
 
       scenario "goal filter" do
@@ -150,7 +151,7 @@ describe "SDG Relations", :js do
 
         expect(page).to have_content "School"
         expect(page).not_to have_content "Hospital"
-      end
+        expect(page).to have_css "li.is-active h2", exact_text: "Pending"
       end
 
       scenario "target filter" do
@@ -163,6 +164,28 @@ describe "SDG Relations", :js do
 
         expect(page).to have_content "School"
         expect(page).not_to have_content "Preschool"
+        expect(page).to have_css "li.is-active h2", exact_text: "Pending"
+      end
+
+      scenario "search within current tab" do
+        visit sdg_management_proposals_path(filter: "pending_sdg_review")
+
+        click_button "Search"
+
+        expect(page).to have_css "li.is-active h2", exact_text: "Pending"
+
+        visit sdg_management_proposals_path(filter: "sdg_reviewed")
+
+        click_button "Search"
+
+        expect(page).to have_css "li.is-active h2", exact_text: "Marked as reviewed"
+
+        visit sdg_management_proposals_path(filter: "all")
+
+        click_button "Search"
+
+        expect(page).to have_css "li.is-active h2", exact_text: "All"
+      end
     end
   end