Use absorbing organisation id to display name

app/controllers/organisations_controller.rb

@@ -16,7 +16,9 @@ class OrganisationsController < ApplicationController
 
     all_organisations = Organisation.order(:name)
     @pagy, @organisations = pagy(filtered_collection(all_organisations.visible, search_term))
-    @merge_requests = MergeRequest.visible.order(:new_organisation_name)
+    @merge_requests = MergeRequest.visible
+                                  .joins("LEFT JOIN organisations ON organisations.id = merge_requests.absorbing_organisation_id")
+                                  .order("organisations.name")
     @searched = search_term.presence
     @total_count = all_organisations.visible.size
   end

app/models/merge_request.rb

@@ -19,7 +19,7 @@ class MergeRequest < ApplicationRecord
   scope :visible, lambda {
     open_collection_period_start_date = FormHandler.instance.start_date_of_earliest_open_collection_period
     where(
-      "(status != :merged_status) OR (status = :merged_status AND merge_date >= :open_collection_period_start_date)",
+      "(merge_requests.status != :merged_status) OR (merge_requests.status = :merged_status AND merge_requests.merge_date >= :open_collection_period_start_date)",
       merged_status: 4,
       open_collection_period_start_date:,
     )
@@ -31,4 +31,8 @@ class MergeRequest < ApplicationRecord
       errors.add(:new_organisation_name, :invalid)
     end
   end
+
+  def absorbing_organisation_name
+    absorbing_organisation&.name || ""
+  end
 end

app/views/organisations/_merge_request_list.html.erb

@@ -22,15 +22,14 @@
     <% @merge_requests.each do |merge_request| %>
       <%= table.with_body do |body| %>
         <%= body.with_row do |row| %>
-          <% absorbing_organisation = @organisations.find { |org| org.id == merge_request.absorbing_organisation_id } %>
-          <% if absorbing_organisation&.name.blank? %>
+          <% if merge_request.absorbing_organisation_name.blank? %>
             <% row.with_cell(text: "You didn't answer this question",
                              html_attributes: {
                                 scope: "row",
                                 class: "app-!-colour-muted",
                              }) %>
           <% else %>
-            <% row.with_cell(text: absorbing_organisation&.name) %>
+            <% row.with_cell(text: merge_request.absorbing_organisation_name) %>
           <% end %>
           <% merge_date = merge_request.merge_date %>
           <% if merge_date.nil? %>