Added observer generator.

3 files changed, 29 insertions, 0 deletions

diff --git a/railties/lib/generators/rails/observer/USAGE b/railties/lib/generators/rails/observer/USAGE
new file mode 100644
index 0000000000..fca4907ca6
--- /dev/null
+++ b/railties/lib/generators/rails/observer/USAGE
@@ -0,0 +1,13 @@
+Description:
+    Stubs out a new observer. Pass the observer name, either CamelCased or
+    under_scored, as an argument.
+
+    The generator creates an observer class in app/models and a unit test in
+    the configured test framework.
+
+Example:
+    `./script/generate observer Account`
+
+    creates an Account observer and invoke the test framework:
+        Observer:   app/models/account_observer.rb
+        TestUnit:   test/unit/account_observer_test.rb
diff --git a/railties/lib/generators/rails/observer/observer_generator.rb b/railties/lib/generators/rails/observer/observer_generator.rb
new file mode 100644
index 0000000000..9a5253a0ad
--- /dev/null
+++ b/railties/lib/generators/rails/observer/observer_generator.rb
@@ -0,0 +1,14 @@
+module Rails
+  module Generators
+    class ObserverGenerator < NamedBase
+      # TODO Check class collisions
+      # class_collisions "#{class_name}Observer", "#{class_name}ObserverTest"
+
+      def create_observer_file
+        template 'observer.rb', File.join('app/models', class_path, "#{file_name}_observer.rb")
+      end
+
+      add_and_invoke_test_framework_option!
+    end
+  end
+end
diff --git a/railties/lib/generators/rails/observer/templates/observer.rb b/railties/lib/generators/rails/observer/templates/observer.rb
new file mode 100644
index 0000000000..b9a3004161
--- /dev/null
+++ b/railties/lib/generators/rails/observer/templates/observer.rb
@@ -0,0 +1,2 @@
+class <%= class_name %>Observer < ActiveRecord::Observer
+end