First generator for Rails 3.

generators/devise/USAGE

@@ -1,5 +0,0 @@
-To create a devise resource user:
-
-    script/generate devise User
-
-This will generate a model named User, a route map for devise called :users, and a migration file for table :users with all devise modules.

generators/devise/devise_generator.rb

@@ -1,15 +0,0 @@
-require File.expand_path(File.dirname(__FILE__) + "/lib/route_devise.rb")
-
-class DeviseGenerator < Rails::Generator::NamedBase
-
-  def manifest
-    record do |m|
-      m.directory(File.join('app', 'models', class_path))
-      m.template 'model.rb', File.join('app', 'models', "#{file_path}.rb")
-
-      m.migration_template 'migration.rb', 'db/migrate', :migration_file_name => "devise_create_#{table_name}"
-      m.route_devise table_name
-    end
-  end
-
-end

generators/devise/lib/route_devise.rb

@@ -1,32 +0,0 @@
-module Rails
-  module Generator
-    module Commands
-      class Create < Base
-
-        # Create devise route. Based on route_resources
-        def route_devise(*resources)
-          resource_list = resources.map { |r| r.to_sym.inspect }.join(', ')
-          sentinel = 'ActionController::Routing::Routes.draw do |map|'
-
-          logger.route "map.devise_for #{resource_list}"
-          unless options[:pretend]
-            gsub_file 'config/routes.rb', /(#{Regexp.escape(sentinel)})/mi do |match|
-              "#{match}\n  map.devise_for #{resource_list}\n"
-            end
-          end
-        end
-      end
-
-      class Destroy < RewindBase
-
-        # Destroy devise route. Based on route_resources
-        def route_devise(*resources)
-          resource_list = resources.map { |r| r.to_sym.inspect }.join(', ')
-          look_for = "\n  map.devise_for #{resource_list}\n"
-          logger.route "map.devise_for #{resource_list}"
-          gsub_file 'config/routes.rb', /(#{look_for})/mi, ''
-        end
-      end
-    end
-  end
-end

generators/devise/templates/model.rb

@@ -1,9 +0,0 @@
-class <%= class_name %> < ActiveRecord::Base
-  # Include default devise modules. Others available are:
-  # :http_authenticatable, :token_authenticatable, :lockable, :timeoutable and :activatable
-  devise :registerable, :authenticatable, :confirmable, :recoverable,
-         :rememberable, :trackable, :validatable
-
-  # Setup accessible (or protected) attributes for your model
-  attr_accessible :email, :password, :password_confirmation
-end

lib/generators/devise/USAGE

@@ -0,0 +1,5 @@
+To create a devise resource user:
+
+    script/generate devise User
+
+This will generate a model named User (if one does not exist), add devise configuration, a route map for devise called :users and a migration file for table :users with default devise modules.

lib/generators/devise/devise_generator.rb

@@ -0,0 +1,54 @@
+require 'rails/generators/migration'
+
+class DeviseGenerator < Rails::Generators::NamedBase
+  include Rails::Generators::Migration
+
+  def self.source_root
+    @_devise_source_root ||= File.expand_path("../templates", __FILE__)
+  end
+
+  def self.orm_has_migration?
+    Rails::Generators.options[:rails][:orm] == :active_record
+  end
+
+  def self.next_migration_number(path)
+    Time.now.utc.strftime("%Y%m%d%H%M%S")
+  end
+
+  class_option :migration, :type => :boolean, :default => orm_has_migration?
+
+  def invoke_orm_model
+    if File.exists?(File.join(destination_root, model_path))
+      say "* Model already exists. Adding Devise behavior."
+    else
+      invoke "model", [name], :migration => false
+    end
+  end
+
+  def inject_devise_config_into_model
+    inject_into_class model_path, class_name, <<-CONTENT
+  # Include default devise modules. Others available are:
+  # :http_authenticatable, :token_authenticatable, :lockable, :timeoutable and :activatable
+  devise :registerable, :authenticatable, :confirmable, :recoverable,
+         :rememberable, :trackable, :validatable
+
+  # Setup accessible (or protected) attributes for your model
+  attr_accessible :email, :password, :password_confirmation
+CONTENT
+  end
+
+  def copy_migration_template
+    return unless options.migration?
+    migration_template "migration.rb", "db/migrate/devise_create_#{table_name}"
+  end
+
+  def add_devise_routes
+    route "devise_for :#{table_name}"
+  end
+
+  protected
+
+    def model_path
+      @model_path ||= File.join("app", "models", "#{file_path}.rb")
+    end
+end