oraclevet opened a new issue #2933:
URL: https://github.com/apache/couchdb/issues/2933
Creating a view(map-reduce) giving "Expression does not eval to a function.
" error.
## Description
Creating a view.
## Steps to Reproduce
code to create the view is as below,
function (doc) {
// first extract what we want to use
const vendors = doc.cve &&
doc.cve.affects &&
doc.cve.affects.vendor &&
doc.cve.affects.vendor.vendor_data;
// since we can't be sure vendor_data does exist
// let's check if it's really an array
if (Array.isArray(vendors) === false)
return; // if not just return and proceed with the next document
// iterate through every "vendor" in that array
vendors.forEach(vendor => {
// let's remember the vendor name
const vendorName = vendor.vendor_name;
// let us also unwrap the product_data
const products = vendor.product &&
vendor.product.product_data;
// again, if products is no array
if (Array.isArray(products) === false)
return; // return and proceed with the next vendor
products.forEach(product => {
// now emit one vendor/product-pair
emit(vendorName, product.product_name);
})
})
}
## Expected Behaviour
view created.
## Your Environment
{"couchdb":"Welcome","version":"3.1.0","git_sha":"ff0feea20","uuid":"b401bbbf089d0d3452eaad6afc60a8f5","features":["access-ready","partitioned","pluggable-storage-engines","reshard","scheduler"],"vendor":{"name":"The
Apache Software Foundation"}}
* CouchDB version used: 3.1.0
* Browser name and version: Chrome/Firefox
* Operating system and version: Ubuntu 18.04 running under WSL.
## Additional Context
[TIP]: # ( Add any other context about the problem here. )
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