rename en_construction_conservation_extension in conservation_extension

lib/tasks/deployment/20210429172327_rename_conservation_extension.rake

@@ -0,0 +1,16 @@
+namespace :after_party do
+  desc 'Deployment task: rename_conservation_extension'
+  task rename_conservation_extension: :environment do
+    puts "Running deploy task 'rename_conservation_extension'"
+
+    dossiers = Dossier.state_en_construction.where.not(en_construction_conservation_extension: 0.days)
+    dossiers.find_each do |dossier|
+      dossier.update_column(:conservation_extension, dossier.en_construction_conservation_extension)
+    end
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord
+      .create version: AfterParty::TaskRecorder.new(__FILE__).timestamp
+  end
+end