Generate a module with propel:generate-admin  : 
{{{
  ./symfony --theme=adminWithShow propel:generate-admin 
}}}

turn on or off the show view in the generator.yml  
{{{
    with_show:             true
}}}
    

sample :
{{{
generator:
  class: sfPropelGenerator
  param:
    model_class:           DemoAuthor
    theme:                 adminWithShow
    non_verbose_templates: true
    with_show:             true
    singular:              ~
    plural:                ~
    route_prefix:          demo_author
    with_propel_route:     1

    config:
      actions: ~
      fields:  ~
      list:    ~
      filter:  ~
      form:    ~
      edit:    ~
      new:     ~
      show:    ~
}}}

you can customize the display :
{{{
      show:
        title:      my show view
        display:    [firstname, is_admin ]
        fields:
          is_admin: {name: user is admin }
}}}

or:
{{{
      show 
        title:      my show view
        hide:       [id ]
        fields:
          is_admin: {name: user is admin }
}}}


== TODO ==
 * a task for create the module