Get QR code to show up on the Field Slip show page

Gemfile

@@ -111,6 +111,9 @@ gem("fastimage")
 # for detecting file type of uploaded images
 gem("mimemagic")
 
+# QR code support for field slips
+gem("rqrcode")
+
 # for creating zip files
 # RubyZip 3.0 is coming!
 # **********************

Gemfile.lock

@@ -98,6 +98,7 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
+    chunky_png (1.4.0)
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
     crack (1.0.0)
@@ -247,6 +248,10 @@ GEM
     requestjs-rails (0.0.11)
       railties (>= 6.1.0)
     rexml (3.2.6)
+    rqrcode (2.2.0)
+      chunky_png (~> 1.0)
+      rqrcode_core (~> 1.0)
+    rqrcode_core (1.2.0)
     rtf (0.3.3)
     rubocop (1.62.1)
       json (~> 2.3)
@@ -391,6 +396,7 @@ DEPENDENCIES
   railties (~> 7.1.3)
   redis (~> 4.0)
   requestjs-rails
+  rqrcode
   rtf
   rubocop
   rubocop-performance

app/models/field_slip.rb

@@ -39,4 +39,16 @@ def find_projects
 
     result.unshift([project.title, project.id])
   end
+
+  def qr_code(path)
+    qr = RQRCode::QRCode.new(path, level: :m)
+    qr.as_svg(
+      color: "000",
+      shape_rendering: "crispEdges",
+      module_size: 3,
+      standalone: true,
+      use_path: true,
+      fill: :white
+    )
+  end
 end

app/views/controllers/field_slips/show.html.erb

@@ -6,6 +6,10 @@
 
 <h1><%= "#{:FIELD_SLIP.t}: #{@field_slip.code}" %></h1>
 
+<div>
+  <%= @field_slip.qr_code(field_slip_url(@field_slip)).html_safe %>
+</div>
+
 <%= render @field_slip %>
 
 <div>

config/routes.rb

@@ -384,8 +384,8 @@ def route_actions_hash
                                      as: "glossary_term_versions")
 
   # ----- Field Slip Records: standard actions --------------------------------
-  resources :field_slips
   get("qr/:id", to: "field_slips#show", id: /.*[^\d.-].*/)
+  resources :field_slips
 
   # ----- Herbaria: standard actions -------------------------------------------
   namespace :herbaria do