From 1b4eba51fe12587a044d90c24d038ceb880c13db Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Janko=20Marohni=C4=87?= <janko.marohnic@gmail.com>
Date: Mon, 9 Dec 2024 11:45:17 +0100
Subject: [PATCH] Raise error when attempting to render, but rendering was
 disabled

---
 lib/rodauth.rb               | 2 ++
 lib/rodauth/features/base.rb | 4 ++++
 spec/rodauth_spec.rb         | 8 ++++++++
 3 files changed, 14 insertions(+)

diff --git a/lib/rodauth.rb b/lib/rodauth.rb
index fea7b663..e8f75ea4 100644
--- a/lib/rodauth.rb
+++ b/lib/rodauth.rb
@@ -3,6 +3,8 @@
 require 'securerandom'
 
 module Rodauth
+  class ConfigurationError < StandardError; end
+
   def self.lib(opts={}, &block) 
     require 'roda'
     c = Class.new(Roda)
diff --git a/lib/rodauth/features/base.rb b/lib/rodauth/features/base.rb
index bb74e367..ac74a8bb 100644
--- a/lib/rodauth/features/base.rb
+++ b/lib/rodauth/features/base.rb
@@ -930,6 +930,10 @@ def _template_opts(opts, page)
     end
 
     def _view(meth, page)
+      unless scope.respond_to?(meth)
+        raise ConfigurationError, "attempted to render a built-in view/email template (#{page.inspect}), but rendering is disabled"
+      end
+
       scope.send(meth, _view_opts(page))
     end
   end
diff --git a/spec/rodauth_spec.rb b/spec/rodauth_spec.rb
index c52e5eaa..9a05b2d5 100644
--- a/spec/rodauth_spec.rb
+++ b/spec/rodauth_spec.rb
@@ -856,6 +856,14 @@ def foo
     c.ancestors.map(&:to_s).wont_include 'Roda::RodaPlugins::RouteCsrf::InstanceMethods'
   end
 
+  it "raises error when rendering is disabled" do
+    c = Class.new(Roda)
+    c.plugin(:rodauth, :render=>false){}
+    rodauth = c.new({}).rodauth
+    error = proc{rodauth.render("login")}.must_raise Rodauth::ConfigurationError
+    error.message.must_include "attempted to render"
+  end
+
   it "should inherit rodauth configuration in subclass" do
     auth_class = nil
     no_freeze!