Question

I have a couchdb database containing different types of documents. Unfortunately some of those documents were generated without a type field, so I can not easily distinguish them. I want to add that type field now. Fortunately the doc_id has also this information, and I want to use it to perform the update.

What I would like is to create a temporary view of the documents whose doc_id matches a certain regex, let’s say:

^user_

Is there a way to define such a map function?

Answer 1

It works as expected:

function(doc) {
  if (doc._id.match(/^user_.*$/)) {
    emit(null, doc);
  }
}

Have you even tried anything?