From f861c72f1e0d49f53e6298e838899ed4399b0661 Mon Sep 17 00:00:00 2001
From: Jakob Skjerning <jakob@mentalized.net>
Date: Sat, 21 Feb 2026 18:07:30 +0100
Subject: [PATCH 1/2] Add ReActionView for improved error messages

... and other good stuff, see https://github.com/marcoroth/reactionview
---
 demo/Gemfile                             |  1 +
 demo/Gemfile.lock                        | 12 ++++++++++++
 demo/config/initializers/reactionview.rb |  9 +++++++++
 3 files changed, 22 insertions(+)
 create mode 100644 demo/config/initializers/reactionview.rb

diff --git a/demo/Gemfile b/demo/Gemfile
index 7a2cecd..66127eb 100644
--- a/demo/Gemfile
+++ b/demo/Gemfile
@@ -20,6 +20,7 @@ gem "kramdown"
 gem "kramdown-parser-gfm"
 gem "lookbook", ">= 2.3.11"
 gem "rails_autolink"
+gem "reactionview"
 
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
diff --git a/demo/Gemfile.lock b/demo/Gemfile.lock
index ed591a8..345eda2 100644
--- a/demo/Gemfile.lock
+++ b/demo/Gemfile.lock
@@ -108,6 +108,14 @@ GEM
     ffi (1.17.2-x86_64-linux-musl)
     globalid (1.2.1)
       activesupport (>= 6.1)
+    herb (0.8.10-aarch64-linux-gnu)
+    herb (0.8.10-aarch64-linux-musl)
+    herb (0.8.10-arm-linux-gnu)
+    herb (0.8.10-arm-linux-musl)
+    herb (0.8.10-arm64-darwin)
+    herb (0.8.10-x86_64-darwin)
+    herb (0.8.10-x86_64-linux-gnu)
+    herb (0.8.10-x86_64-linux-musl)
     htmlbeautifier (1.4.3)
     htmlentities (4.3.4)
     i18n (1.14.7)
@@ -240,6 +248,9 @@ GEM
     rdoc (6.14.2)
       erb
       psych (>= 4.0.0)
+    reactionview (0.2.1)
+      actionview (>= 7.0)
+      herb (>= 0.8.0, < 1.0.0)
     redcarpet (3.6.1)
     reline (0.6.2)
       io-console (~> 0.5)
@@ -307,6 +318,7 @@ DEPENDENCIES
   puma (>= 5.0)
   rails (~> 8.0.2)
   rails_autolink
+  reactionview
   sqlite3 (>= 2.1)
   tailwindcss-rails (~> 4.3)
   tzinfo-data
diff --git a/demo/config/initializers/reactionview.rb b/demo/config/initializers/reactionview.rb
new file mode 100644
index 0000000..99d9588
--- /dev/null
+++ b/demo/config/initializers/reactionview.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+ReActionView.configure do |config|
+  # Intercept .html.erb templates and process them with `Herb::Engine` for enhanced features
+  config.intercept_erb = true
+
+  # Enable debug mode in development (adds debug attributes to HTML)
+  config.debug_mode = Rails.env.development?
+end

From d13e27b83b9ac9bb211d18ea7a848d313269b881 Mon Sep 17 00:00:00 2001
From: Jakob Skjerning <jakob@mentalized.net>
Date: Sat, 21 Feb 2026 18:14:17 +0100
Subject: [PATCH 2/2] Only setup ReActionView if it's defined

During development, ReActionView isn't really available since we it's
only a dependency of the demo app.
---
 demo/config/initializers/reactionview.rb | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/demo/config/initializers/reactionview.rb b/demo/config/initializers/reactionview.rb
index 99d9588..1fe7c11 100644
--- a/demo/config/initializers/reactionview.rb
+++ b/demo/config/initializers/reactionview.rb
@@ -1,9 +1,11 @@
 # frozen_string_literal: true
 
-ReActionView.configure do |config|
-  # Intercept .html.erb templates and process them with `Herb::Engine` for enhanced features
-  config.intercept_erb = true
+if defined?(ReActionView)
+  ReActionView.configure do |config|
+    # Intercept .html.erb templates and process them with `Herb::Engine` for enhanced features
+    config.intercept_erb = true
 
-  # Enable debug mode in development (adds debug attributes to HTML)
-  config.debug_mode = Rails.env.development?
+    # Enable debug mode in development (adds debug attributes to HTML)
+    config.debug_mode = Rails.env.development?
+  end
 end