preload all tdc once for all

app/services/pieces_justificatives_service.rb

@@ -113,6 +113,11 @@ class PiecesJustificativesService
     pdfs = []
 
     procedure = dossiers.first.procedure
+    tdc_by_id = TypeDeChamp
+      .joins(:revisions)
+      .where(revisions: { id: procedure.revisions })
+      .to_a
+      .group_by(&:id)
 
     dossiers
       .includes(:champs, :champs_private, :commentaires, :individual,
@@ -124,7 +129,8 @@ class PiecesJustificativesService
                 assigns: {
                   include_infos_administration: true,
                   dossier: dossier,
-                  procedure: procedure
+                  procedure: procedure,
+                  tdc_by_id: tdc_by_id
                 })
 
       a = FakeAttachment.new(

app/views/dossiers/show.pdf.prawn

@@ -130,28 +130,30 @@ def add_identite_etablissement(pdf, etablissement)
 end
 
 def add_single_champ(pdf, champ)
+  tdc = @tdc_by_id[champ.type_de_champ_id].first
+
   case champ.type
   when 'Champs::PieceJustificativeChamp', 'Champs::TitreIdentiteChamp'
     return
   when 'Champs::HeaderSectionChamp'
-    add_section_title(pdf, champ.libelle)
+    add_section_title(pdf, tdc.libelle)
   when 'Champs::ExplicationChamp'
-    format_in_2_lines(pdf, champ.libelle, champ.description)
+    format_in_2_lines(pdf, tdc.libelle, tdc.description)
   when 'Champs::CarteChamp'
-    format_in_2_lines(pdf, champ.libelle, champ.to_feature_collection.to_json)
+    format_in_2_lines(pdf, tdc.libelle, champ.to_feature_collection.to_json)
   when 'Champs::SiretChamp'
     pdf.font 'marianne', style: :bold do
-      pdf.text champ.libelle
+      pdf.text tdc.libelle
     end
     if champ.etablissement.present?
       add_identite_etablissement(pdf, champ.etablissement)
     end
   when 'Champs::NumberChamp'
     value = champ.to_s.empty? ? 'Non communiqué' : number_with_delimiter(champ.to_s)
-    format_in_2_lines(pdf, champ.libelle, value)
+    format_in_2_lines(pdf, tdc.libelle, value)
   else
     value = champ.to_s.empty? ? 'Non communiqué' : champ.to_s
-    format_in_2_lines(pdf, champ.libelle, value)
+    format_in_2_lines(pdf, tdc.libelle, value)
   end
 end
 
@@ -206,6 +208,8 @@ end
 
 prawn_document(page_size: "A4") do |pdf|
   @procedure ||= @dossier.procedure
+  @tdc_by_id ||= @dossier.champs.map(&:type_de_champ).group_by(&:id)
+
   pdf.font_families.update( 'marianne' => {
     normal: Rails.root.join('lib/prawn/fonts/marianne/marianne-regular.ttf' ),
     bold: Rails.root.join('lib/prawn/fonts/marianne/marianne-bold.ttf' ),