couchdb/_design/podcasts/validate_doc_update.js

   1 function(newDoc, oldDoc, userCtx)
   2 {
   3     function require(doc, field, message)
   4     {
   5         message = message || "Document must have a " + field;
   6         if (doc[field] == void 0 || doc[field] == null || doc[field].length == 0)
   7         {
   8             throw({forbidden: message});
   9         }
  10     }
  11
  12     function check(cond, message)
  13     {
  14         message = message || "Condition check failed";
  15         if(!cond)
  16         {
  17             throw({forbidden: message});
  18         }
  19     }
  20
  21     function checkPodcast(podcast)
  22     {
  23         last_timestamp = null;
  24         if(podcast.subscribers)
  25         {
  26             for(var i=0, len=podcast.subscribers.length; sub=podcast.subscribers[i], i<len; i++)
  27             {
  28                 check((last_timestamp == null) || (last_timestamp < sub.timestamp), "Subscriber Data must be sorted");
  29                 last_timestamp = sub.timestamp;
  30             }
  31         }
  32     }
  33
  34     if(newDoc.doc_type == "PodcastGroup")
  35     {
  36         for(var n=0, len=newDoc.podcasts.length; podcast=newDoc.podcasts[n], n<len; n++)
  37         {
  38             if(oldDoc)
  39             {
  40                 oldpodcast = oldDoc.podcasts[n];
  41             }
  42             else
  43             {
  44                 oldpodcast = null;
  45             }
  46
  47             require(podcast, "id");
  48             require(podcast, "group");
  49             check(podcast.group == newDoc._id);
  50             checkPodcast(podcast);
  51         }
  52     }
  53     else if(newDoc.doc_type == "Podcast")
  54     {
  55         checkPodcast(newDoc);
  56     }
  57 }