Name space generators; add install generator

lib/generators/data_migration/data_migration_generator.rb

@@ -1,32 +1,34 @@
 require 'rails/generators/migration'
+module DataMigration
+  class DataMigrationGenerator < Rails::Generators::NamedBase
+    namespace "data_migration"
+    argument :attributes, :type => :array, :default => [], :banner => "field:type field:type"
 
-class DataMigrationGenerator < Rails::Generators::NamedBase
-  argument :attributes, :type => :array, :default => [], :banner => "field:type field:type"
+    source_root File.expand_path('../templates', __FILE__)
+    include Rails::Generators::Migration
 
-  source_root File.expand_path('../templates', __FILE__)
-  include Rails::Generators::Migration
+    class_option :skip_migration, :desc => 'Dont generate database migration file.', :type => :boolean
 
-  class_option :skip_migration, :desc => 'Dont generate database migration file.', :type => :boolean
-
-  def create_data_migration
-    set_local_assigns!
-    unless  options.skip_migration?
-      migration_template "migration.rb", "db/migrate/#{file_name}.rb"
+    def create_data_migration
+      set_local_assigns!
+      unless  options.skip_migration?
+        migration_template "migration.rb", "db/migrate/#{file_name}.rb"
+      end
+      migration_template "data_migration.rb", "db/data/#{file_name}.rb"
     end
-    migration_template "data_migration.rb", "db/data/#{file_name}.rb"
-  end
 
-  protected
-  attr_reader :migration_action
+    protected
+    attr_reader :migration_action
 
-  def self.next_migration_number(dirname)
-     Time.now.utc.strftime("%Y%m%d%H%M%S")
-   end
+    def self.next_migration_number(dirname)
+      Time.now.utc.strftime("%Y%m%d%H%M%S")
+    end
 
-  def set_local_assigns!
-    if file_name =~ /^(add|remove)_.*_(?:to|from)_(.*)/
-      @migration_action = $1
-      @table_name       = $2.pluralize
+    def set_local_assigns!
+      if file_name =~ /^(add|remove)_.*_(?:to|from)_(.*)/
+        @migration_action = $1
+        @table_name       = $2.pluralize
+      end
     end
   end
 end

lib/generators/data_migration/install_generator.rb

@@ -0,0 +1,41 @@
+# require 'rails/generators/migration'
+# class InstallGenerator < Rails::Generators::Base
+#   source_root File.expand_path('../templates', __FILE__)
+#   include Rails::Generators::Migration
+
+#   def data_migrations_table_migration
+#     generate("migration", "add_data_migrations_table version:text")
+#     migration_template "install_migration.rb", "db/migrate/create_data_migrations.rb"
+#   end
+# end
+
+
+#   protected
+#   def self.next_migration_number(dirname)
+#      Time.now.utc.strftime("%Y%m%d%H%M%S")
+#    end
+# end
+require 'rails/generators'
+require 'rails/generators/migration'
+module DataMigration
+  class InstallGenerator < Rails::Generators::Base
+    include Rails::Generators::Migration
+    def self.source_root
+      @source_root ||= File.join(File.dirname(__FILE__), 'templates')
+    end
+
+    def self.next_migration_number(dirname)
+      if ActiveRecord::Base.timestamped_migrations
+        Time.new.utc.strftime("%Y%m%d%H%M%S")
+      else
+        "%.3d" % (current_migration_number(dirname) + 1)
+      end
+    end
+
+    def create_migration_file
+      migration_template "install_migration.rb", "db/migrate/create_data_migrations.rb"
+      #migration_template 'migration.rb', 'db/migrate/create_pages_table.rb'
+    end
+  end
+
+end

lib/generators/data_migration/templates/install_migration.rb

@@ -0,0 +1,13 @@
+class CreateDataMigrations < ActiveRecord::Migration
+  def self.up
+    create_table :data_migrations do |t|
+      t.string :version
+    end
+
+    add_index :data_migrations, :version
+  end
+
+  def self.down
+    drop_table :data_migrations
+  end
+end