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ViewsGet the key of an object via Firebase v9 queries
I want to write a function so that it returns me the key i.e ("A" || "B" || "C" || "D" || null) if an id already exists in any of the option. So my idea is that a user can only choose one option among(A,B,C,D). Can you suggest me any firebase query(JavaScript) for doing so.
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Juan Pablo Isaza
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There is no way to perform an OR type query like that across multiple fields in Firestore, not is there a way to have a condition on just part of an array element.
You will either have to perform a separate query for each field and merge the results in your code, or (and more likely) add an additional field to the documents with all the IDs from the all the other fields and then perform the query on that (merged) field.
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Juan Pablo Isaza
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