Add 'number of sessions' to search options

[jbwexler]

What would you like to see added?

I would like to see 'number of sessions' added as an option in search.

Alternatives

No response

Do you have any interest in helping implement the feature?

Yes, but I would need guidance

Additional information / screenshots

No response

[nellh]

The indexing side is pretty simple, there's a mapping that needs the field added: https://github.com/OpenNeuroOrg/openneuro/blob/master/packages/openneuro-search/src/mappings/datasets-mapping.json

And a query that grabs those values from OpenNeuro and does any transformation needed to write it to the index: https://github.com/OpenNeuroOrg/openneuro/blob/master/packages/openneuro-search/src/query.ts

This field already exists and contains an array of sessions identified by bids-validator.

latestSnapshot {
  summary {
    sessions
  }
}

That should be it for making it available via the API. You can test this with docker-compose, it runs ElasticSearch and the indexer.

Client side is here: https://github.com/OpenNeuroOrg/openneuro/tree/master/packages/openneuro-app/src/scripts/search - advancedSearch is the GraphQL query that runs queries. Sessions would just need the right UI component hooked up here and defaults added for the Apollo state.