Merge pull request #36237 from eileencodes/fix-erb-in-database-yaml-again

Fix database loading when ERB is single line ternary

railties/lib/rails/application/dummy_erb_compiler.rb

@@ -13,7 +13,12 @@ class DummyCompiler < ERB::Compiler # :nodoc:
   def compile_content(stag, out)
     case stag
     when "<%="
-      out.push "_erbout << 'dummy_compiler'"
+      content = out.instance_variable_get(:@compiler).instance_variable_get(:@content)
+      if content.include?("?") && content.include?(":")
+        out.push "_erbout << 'dummy_key: dummy_value'"
+      else
+        out.push "_erbout << 'dummy_value'"
+      end
     end
   end
 end

railties/test/application/rake/dbs_test.rb

@@ -122,6 +122,22 @@ def db_create_and_drop(expected_database, environment_loaded: true)
         db_create_and_drop("db/development.sqlite3", environment_loaded: false)
       end
 
+      test "db:create and db:drop dont raise errors when loading YAML with FIXME ERB" do
+        app_file "config/database.yml", <<-YAML
+          development:
+            <%= Rails.application.config.database ? 'database: db/development.sqlite3' : 'database: db/development.sqlite3' %>
+            adapter: sqlite3
+        YAML
+
+        app_file "config/environments/development.rb", <<-RUBY
+          Rails.application.configure do
+            config.database = "db/development.sqlite3"
+          end
+        RUBY
+
+        db_create_and_drop("db/development.sqlite3", environment_loaded: false)
+      end
+
       def with_database_existing
         Dir.chdir(app_path) do
           set_database_url