Remove PDF generation and make HTML one printable

app/controllers/contestants_controller.rb

@@ -131,13 +131,8 @@ class ContestantsController < ApplicationController
     @contestants = @contest.contestants.sort_by { |contestant| contestant.name }
     @nonav = true
 
-    FerrumPdf.configure do |config|
-      config.process_timeout = 20
-    end
-
     respond_to do |format|
-      format.html
-      format.pdf { render ferrum_pdf: {}, disposition: :inline, filename: "#{@contest.friendly_id}_qrcodes.pdf", layout: "blank" }
+      format.html { render layout: "blank" }
     end
   end
 

app/views/contestants/generate_qrcodes.html.slim

@@ -5,8 +5,8 @@
         .alert.alert-info
           = t("contestants.generate_qrcodes.note")
 
-    a.mt-3.mb-3.btn.btn-primary href="#{contest_generate_qrcodes_pdf_path(@contest)}.pdf" target="_blank" style="margin-top: -3px"
-      = t("helpers.buttons.download_pdf")
+    a.mt-3.mb-3.btn.btn-primary href="#{contest_generate_qrcodes_pdf_path(@contest)}" target="_blank" style="margin-top: -3px"
+      = t("helpers.buttons.open_raw")
   
     .col.d-flex.flex-column style="height: calc(100% - 200px)"
       .d-flex.flex-column style="overflow-y: auto;"

app/views/contestants/generate_qrcodes_pdf.html.slim

@@ -1,12 +1,13 @@
-h1.text-center.mb-5 = @contest.name
+h1.text-center.mt-4.mb-4 = @contest.name
 
-- for row in 0..((@contestants.length - 1) / 5)
-  .mt-4.d-flex.flex-row
-    - for col in 0..3
-      - if row * 4 + col < @contestants.length
-        .d-flex.flex-column.ms-5 style="align-items: center"
-          - if @contestants[row * 4 + col].qrcode.present?
-            .mt-1 style="width: 128px; height: 120px;"
-              = @contestants[row * 4 + col].qrcode.html_safe
-          .name.text-center.mt-3 style="font-size: 0.7rem; max-width: 128px; height: 30px;"
-            = @contestants[row * 4 + col].name
+.d-flex.flex-column.align-items-center
+  - for row in 0..((@contestants.length - 1) / 5)
+    .mt-4.d-flex.flex-row
+      - for col in 0..3
+        - if row * 4 + col < @contestants.length
+          .d-flex.flex-column.ms-4.me-4 style="align-items: center"
+            - if @contestants[row * 4 + col].qrcode.present?
+              .mt-1 style="width: 128px; height: 120px;"
+                = @contestants[row * 4 + col].qrcode.html_safe
+            .name.text-center.mt-3 style="font-size: 0.7rem; max-width: 128px; height: 30px;"
+              = @contestants[row * 4 + col].name