[Couchdb Wiki] Update of "Document_Update_Handlers" by gert

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The "Document_Update_Handlers" page has been changed by gert:
http://wiki.apache.org/couchdb/Document_Update_Handlers?action=diff&rev1=18&rev2=19

Comment:
The functions should be double-quoted JSON strings

  {
    updates: {
  
-     "hello" : function(doc, req) {
+     "hello" : "function(doc, req) {
        if (!doc) {
          if (req.id) {
            return [{
@@ -33, +33 @@

        doc.world = "hello";
        doc.edited_by = req.userCtx;
        return [doc, "hello doc"];
-     },
+     }",
  
-     "in-place" : function(doc, req) {
+     "in-place" : "function(doc, req) {
        var field = req.form.field;
        var value = req.form.value;
        var message = "set "+field+" to "+value;
        doc[field] = value;
        return [doc, message];
-     },
+     }",
  
-     "bump-counter" : function(doc, req) {
+     "bump-counter" : "function(doc, req) {
        if (!doc.counter) doc.counter = 0;
        doc.counter += 1;
        var message = "<h1>bumped it!</h1>";
        return [doc, message];
-     },
+     }",
  
-     "error" : function(doc, req) {
+     "error" : "function(doc, req) {
        superFail.badCrash;
-     },
+     }",
  
-     "xml" : function(doc, req) {
+     "xml" : "function(doc, req) {
        var xml = new XML('<xml></xml>');
        xml.title = doc.title;
        var posted_xml = new XML(req.body);
@@ -67, +67 @@

        };
  
         return [doc, resp];
-      }
+      }"
    }
  }
  }}}
- NOTE: '''The functions should be double-quoted JSON strings'''.
  
  The handler function takes the most recent version of the document from the 
database and the http request environment as parameters. It returns a 
two-element array: the first element is the (updated or new) document, which is 
committed to the database. If the first element is null no document will be 
committed to the database. If you are updating an existing, it should already 
have an `_id` set, and if you are creating a new document, make sure to set its 
`_id` to something, either generated based on the input or the `req.uuid` 
provided. The second element is the response that will be sent back to the 
caller.