couchdb view not responding as expected

I have couchdb 0.10 installed on Ubuntu 10.04. I have this view:

function(doc) {
  if (doc.type == "transaction") {
    emit(doc.invoice_id, {id: doc._id, time: doc.time, user_id:doc.user_id});
  }
}

I call it through a get with key=247 parameter specified:

    http://127.0.0.1:5984/test/_design/sfCouch/_view/f开发者_StackOverflowind_by_invoice_id?key=247

In the db I have a document matching invoice_id = 247:

{
   "_id": "1357b381d8c22aa193f42de54e400d16",
   "_rev": "2-778ea588fa449851bbab6cfa9fa91bfa",
   "type": "transaction",
   "user_id": "1",
   "invoice_id": "247",
   "time": 1303895611.37
}

but no rows are given back from the view:

{"total_rows":4,"offset":1,"rows":[]}

this is my design document:

{
   "_id": "_design/sfCouch",
   "_rev": "11-95c82a9d562b3aa1470a02de943f49db",
   "language": "javascript",
   "views": {
       "find_by_invoice_id": {
           "map": "function(doc) {\u000d\u000a  if (doc.type == \"transaction\") {\u000d\u000a    emit(doc.invoice_id, {id: doc._id, time: doc.time, user_id:doc.user_id});\u000d\u000a  }\u000d\u000a}"
       }
   }
}

Am I missing something?

As the key invoice_id is a string you need to specify the key as a JSON encoded string too.

Try:

http://127.0.0.1:5984/test/_design/sfCouch/_view/find_by_invoice_id?key=%22247%22

(the %22 is a URL Encoded " sign)

If that too fails can you post the output of:

http://127.0.0.1:5984/test/_design/sfCouch/_view/find_by_invoice_id