Prevent exception of loading database yaml with blank config file [closes: #36661]

2 files changed, 6 insertions, 1 deletions

diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
index f5456f4916..5b3e96cbd4 100644
--- a/railties/lib/rails/application/configuration.rb
+++ b/railties/lib/rails/application/configuration.rb
@@ -209,7 +209,7 @@ module Rails
           yaml = Pathname.new(path)
           erb = DummyERB.new(yaml.read)
 
-          YAML.load(erb.result)
+          YAML.load(erb.result) || {}
         else
           {}
         end
diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index f6bec3242a..a05d86f738 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -1793,6 +1793,11 @@ module ApplicationTests
       assert_equal [X, D], C.descendants
     end
 
+    test "load_database_yaml returns blank hash if configuration file is blank" do
+      app_file "config/database.yml", ""
+      app "development"
+      assert_equal({}, Rails.application.config.load_database_yaml)
+    end
 
     test "raises with proper error message if no database configuration found" do
       FileUtils.rm("#{app_path}/config/database.yml")