Constrain query to match item in an array with any item in an array?

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#1

Hello everyone,

I have users with a key called “interests” where I store an array of arrays of strings ([[String]]), where each inner array is an interest composed of three strings, and another key called “interestsFilter”, with the same structure. How would I constrain a query so that I get the users that have any array interests match any array in interestFilter?

For example:
User1 has:
interests: [[“Soccer”, “Goalkeeper”, “Beginner”], [“Baseball”, “Pitcher”, “Advanced”]]
CurrentUser has:
interestsFilter: [[“Baseball”,“Catcher”,“Advanced”],[“Soccer”,“Goalkeeper”,“Beginner”]]

User1’s interests[0] matches CurrentUser’s interestsFilter[1], so the query would return user1.

Thanks

#2

I believe that query.containedIn('interests',[[“Baseball”,“Catcher”,“Advanced”],[“Soccer”,“Goalkeeper”,“Beginner”]] should do what you need.

#3

Just tested it. Sadly, this would only work if ‘interests’ stored an array of strings instead of an array of arrays of strings.

#4

You will probably have to use aggregate: JavaScript Developers Guide | Parse

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