example_design.js

{
   "_id": "_design/news",
   "_rev": "1-3487605953",
   "language": "javascript",
   "views": {
       "articles": {
           "map": "function(doc) {\n  var newsitem = doc.newsitem\n  if(newsitem && newsitem.tags.indexOf('artikel') != -1){\n    emit(null, newsitem.title);\n  }\n}"
       }
   }
}