Creating a validation with CouchDB (Fauxton) - couchdb

Question

I store products in the following way in a CouchDB database:
{
"_id": "1ce330a867a803fd10082c4513000fe5",
"_rev": "4-a5eae6f790ea8b9cedea53db50a13fef",
"type": "Product",
"name": "Apple",
"price": 1
}
I'd like to create a validation to make sure that every new document with the type Product has the field name. The only documentation I found was http://guide.couchdb.org/draft/validation.html After reading it I wrote/copied this validation:
function(newDoc, oldDoc, userCtx) {
function require(field, message) {
message = message || "Document must have a " + field;
if (!newDoc[field]) throw({forbidden : message});
}
if (newDoc.type == "Product") {
require("name");
}
}
Than I use Fauxton to create it:
But it doesn't work. I can create such a document without a name field. What do I do wrong?

Answer 1

You have to create a new design document. You need to specify the language field which will be JavaScript in your case.
Then, you have to add the validate_doc_update field and fill it with your function.
As a reference, you can look into the _replicator database for the _design/_replicator.
Alternative
On the command line it can be done with (beware of escaping the "):
curl -X PUT http://127.0.0.1:5984/shop/_design/product_validation -d '{"validate_doc_update": "function(newDoc, oldDoc, userCtx) { if (newDoc.type == \"product\") { if (!newDoc[\"name\"]) { throw({forbidden: \"missing name\"}) } } }"}'