Searching across 2 collections

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1

What would be a good approach to implement a global search that spans over 3 fields on 2 collections?

The main CollectionFS MyPix contains documents with images and some metadata. And there’s a separate collection DocLinks that contains Links and references to the main MyPix collection via MyPix’ IDs.

If a user performs a search, I’d like to return all documents that contain the term in one of these fields:

MyPix collection
	.name
	.metadata.tags

DocLinks collection // (linked via MyPix' IDs)
	.name

Results from DocLinks would return the corresponding MyPix IDs that would link to documents on MyPix – which would be added to the results from searching the 2 fields on MyPix.

Thanks!