Ramda: How to filter based on a value in a nested array

Question

I\'m trying to accomplish this in a functional manner (with Ramda). My JSON is structured like this

[
    {username: \'bob\', age: 30, tags: [\'work\', \'bor         


        

Answer 1

const arr = [
 {username: 'bob', age: 30, tags: ['work', 'boring']},
 {username: 'jim', age: 25, tags: ['home', 'fun']},
 {username: 'jane', age: 30, tags: ['vacation', 'fun']}
];

res = R.filter(R.where({tags: R.contains('home')}), arr);

Answer 2

There are many ways you could do this. But I think the cleanest one would be:

R.filter(R.where({tags: R.includes('fun')}))

You can see it in action in the Ramda REPL.

Other options, especially if the field is more deeply nested is to compose (or pipe) prop or path calls with contains or possibly to take advantage of lenses.

Still, I think the answer above is most readable.