From 941200814d6825bd00bd8fe827102b7c854317e6 Mon Sep 17 00:00:00 2001
From: Steve Polito <stevepolito@hey.com>
Date: Mon, 26 Feb 2024 05:20:59 -0500
Subject: [PATCH 1/2] Set `action_mailer.default_url_options` values in
 `development` and `test`.

Prior to this commit, new Rails applications would raise
`ActionView::Template::Error` if a mailer included a url built with a
`*_path` helper.

Since we already know [new apps will be served on `localhost:3000`][new
apps], we set this as the value in `development`.

In an effort to remain consistent with existing patters, we set the
`host` to `www.example.com` in `test.

[new apps]: https://github.com/rails/rails/blob/47300002db11d67d7b35103f5c429dad7dacdacd/README.md?plain=1#L81
---
 railties/CHANGELOG.md                                      | 7 +++++++
 .../app/templates/config/environments/development.rb.tt    | 2 ++
 .../rails/app/templates/config/environments/test.rb.tt     | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index 454c4361d843e..72794554920b9 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,3 +1,10 @@
+*   Set `action_mailer.default_url_options` values in `development` and `test`.
+
+    Prior to this commit, new Rails applications would raise `ActionView::Template::Error`
+    if a mailer included a url built with a `*_path` helper.
+
+    *Steve Polito*
+
 *   Introduce `Rails::Generators::Testing::Assertions#assert_initializer`
 
     Compliments the existing `initializer` generator action.
diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
index 9d9f0d9ceb661..ec92835ad14aa 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
@@ -43,6 +43,8 @@ Rails.application.configure do
   config.action_mailer.raise_delivery_errors = false
 
   config.action_mailer.perform_caching = false
+
+  config.action_mailer.define_url_options = { host: "localhost", port: 3000 }
   <%- end -%>
 
   # Print deprecation notices to the Rails logger.
diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt
index 3fed28b706582..0ab0765dce5a9 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt
@@ -44,6 +44,10 @@ Rails.application.configure do
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
+  # Unlike controllers, the mailer instance doesn't have any context about the
+  # incoming request so you'll need to provide the :host parameter yourself.
+  config.action_mailer.default_url_options = { host: "www.example.com" }
+
   <%- end -%>
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr

From fc44197a0e0f7cf88d5e7209dc6e85780d9e9cfa Mon Sep 17 00:00:00 2001
From: Steve Polito <stevepolitodesign@users.noreply.github.com>
Date: Tue, 27 Feb 2024 05:39:51 -0500
Subject: [PATCH 2/2] Update
 railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Rafael Mendonça França <rafael@franca.dev>
---
 .../rails/app/templates/config/environments/development.rb.tt   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
index ec92835ad14aa..4610e99c7fc69 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
@@ -44,7 +44,7 @@ Rails.application.configure do
 
   config.action_mailer.perform_caching = false
 
-  config.action_mailer.define_url_options = { host: "localhost", port: 3000 }
+  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
   <%- end -%>
 
   # Print deprecation notices to the Rails logger.