CODEWITHSUNDEEP
javascripttypescriptecmascript-6ecmascript-5
Rav
Rav

Reputation: 33

Filter array of objects by array of objects [TypeScript] [ES6]

How to filter array of objects by array of objects with conditions.

Interfaces:

interface Person {
    age: number;
    available: boolean;
}

interface PersonFilter {
    predicateFn(arg: Person): boolean;
}

Data: 

const persons = [
  {
    "age": 2,
    "available": false
  },
  {
    "age": 5,
    "available": true
  }
];

Conditions to filter:

const filters = [
    {predicateFn: person => person.available},
    {predicateFn: people => person.age > 2}
];

How to filter this array of objects using current filters structure ?

function getFilteredPersons(filters): Person[]{
return persons.filter( ?? );
}

Expected output:

  [
      {
        "age": 5,
        "available": true
      }
    ]

Upvotes: 0

Views: 1726

Answers (1)

J. Pichardo
J. Pichardo

Reputation: 3115

You can try it with the Array.prototype.every function, it would be something like:

const persons = [{
    age: 2,
    available: false
  },
  {
    age: 5,
    available: true
  }
];

const filters = [{
    predicateFn: person => person.available
  },
  {
    predicateFn: person => person.age > 2
  }
];

function getFilteredPersons(filters) {
  return persons.filter(p => filters.every(filter => filter.predicateFn(p)));
}

console.log(getFilteredPersons(filters));

Upvotes: 3

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