When a document is added to a collection, a new schema is added to this document (collectionMember), with a field storing the ids of the related collections. So, to query on collections, we need to add this schema to the Studio registry, then use a Multiple Documents Suggestion widget and format it correctly.

• In the Schemas registry, add the collectionMember schema (warning if you already had shema(s) defined: Format the JSON accordingly):

  {
    schemas: {
      collectionMember: {
        "@prefix" : "collectionMember",
        "collectionIds" : "string[]"
      }
    }
  }
  

IMPORTANT: This step will not be necessary shortly, as this schema will already be made available in Studio directly.

• In the Content-View used for DAM search, drag-Drop a Multiple Documents Suggestion widget and set the following properties:
  • Field: collectionMember:collectionIds
  • (Operator IN: No choices)
  • Document page provider name: default_collection
    • This page provider makes sure only documents of type Collection can be chosen by the user
  • Hide Help Label: Yes (not required, but better look & feel)
  • Suggestion Formatter: docSelectionDefaultFormatter
    • This formater displays the list of collections without their paths (the default Multiple Documents Suggestion widget also displays the path in the list of documents)

Reminder

This works only with Nuxeo >= version 5.9.3