From 87a8206dbca1d6992e91eeea9a6c56e7c53e0ef1 Mon Sep 17 00:00:00 2001
From: "yuuji.yaginuma" <yuuji.yaginuma@gmail.com>
Date: Fri, 24 Feb 2017 23:45:05 +0900
Subject: does not show hidden namespaces in generator's help

---
 railties/lib/rails/commands/generate/generate_command.rb | 3 +++
 railties/test/application/generators_test.rb             | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/railties/lib/rails/commands/generate/generate_command.rb b/railties/lib/rails/commands/generate/generate_command.rb
index aa8dab71b0..2718b453a8 100644
--- a/railties/lib/rails/commands/generate/generate_command.rb
+++ b/railties/lib/rails/commands/generate/generate_command.rb
@@ -4,6 +4,9 @@ module Rails
   module Command
     class GenerateCommand < Base # :nodoc:
       def help
+        require_application_and_environment!
+        load_generators
+
         Rails::Generators.help self.class.command_name
       end
 
diff --git a/railties/test/application/generators_test.rb b/railties/test/application/generators_test.rb
index d2ce14f594..ee0d697599 100644
--- a/railties/test/application/generators_test.rb
+++ b/railties/test/application/generators_test.rb
@@ -184,5 +184,12 @@ module ApplicationTests
 
       Rails::Command.send(:remove_const, "APP_PATH")
     end
+
+    test "help does not show hidden namespaces" do
+      FileUtils.cd(rails_root) do
+        output = `bin/rails generate --help`
+        assert_no_match "active_record:migration", output
+      end
+    end
   end
 end
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