added a warning to add model schema to a model and add id as a defaul…

…t property to generated a model

merb_datamapper/lib/generators/data_mapper_model.rb

@@ -7,6 +7,11 @@ def datamapper_type(type)
     return 'DateTime' if type == 'datetime'
     return type.camel_case
   end
+
+  def after_generation
+     STDOUT.puts "\n\033[1;32m Don't forget to define the model schema in your #{file_name.capitalize} class\033[0m\n"
+  end
+
 end
 
 Merb::Generators::ModelGenerator.template :model_datamapper, :orm => :datamapper do |t|

merb_datamapper/lib/generators/templates/model.rb

@@ -1,6 +1,9 @@
 <% with_modules(modules) do -%>
 class <%= class_name %>
   include DataMapper::Resource
+
+  property :id, Integer, :serial => true
+
 <% attributes.each do |name, type| %>
   property :<%= name -%>, <%= datamapper_type(type) -%>
 <% end %>