Filter array of objects by their values

Question

I wish to iterate over an array of objects, which for purposes of illustration here are Users. I would like to filter those Users using a search term provided and the value of each of the objects properties.

I have come up with the following working solution, however, I am looking to see if anyone has a more elegant method?

let users = [
  {
    first_name: "Super",
    last_name: "User"
  },
  {
    first_name: "Admin",
    last_name: "Istrator"
  }
];

function filterObjects(collection, term) {
  let filtered = [];
  _.each(collection, obj => {
    _.forOwn(obj, (value, key) => {
      if (value.includes(term)) {
        filtered.push(obj);
      }
    });
  });

  return filtered;
}

console.log(filterUsers(users, "Su"));

[Edit]

I make no assumptions about the structure, or the name, or quantity of any fields on the objects, therefore I do not want to use things like object.field_name === 'something' for example.

var filtered = collection.filter(item => item.first_name.includes(term) && item.last_name.includes(term)); — Rafael Herscovici
– Rafael Herscovici, Commented Nov 26, 2019 at 11:22
@Dementic - Thanks for the response, that will work fine if I know the keys of the object being searched and if there are a limited number. — Peppermintology
– Peppermintology, Commented Nov 26, 2019 at 11:24
As you can see from @Ori Drori's answer, this was the right way. you should always try to consider how can i use this. — Rafael Herscovici
– Rafael Herscovici, Commented Nov 26, 2019 at 11:33
Does this answer your question? How to filter object array based on attributes? — Dexygen
– Dexygen, Commented Nov 26, 2019 at 11:35
@GeorgeJempty - Yes, I did. My question was how to improve my functioning solution which I had come up with based on my limited knowledge/Googling of the JS ecosystem. How are any of the answers in the link you provided improvements?! — Peppermintology
– Peppermintology, Commented Nov 26, 2019 at 11:42

Ori Drori · Accepted Answer · 2019-11-26 11:28:34Z

1

You can filter, and use _.some() to iterate the values, and check with Array.includes() (or lodash equivalent) if the term exists in the value.

const filterUsers = (collection, term) =>
  collection.filter(o => _.some(o, v => v.includes(term)));

const users = [{"first_name":"Super","last_name":"User"},{"first_name":"Admin","last_name":"Istrator"}];

console.log(filterUsers(users, "Su"));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.js"></script>

And the same idea using lodash/fp:

const { filter, some, includes } = _;

const filterUsers = term => filter(some(includes(term)));

const users = [{"first_name":"Super","last_name":"User"},{"first_name":"Admin","last_name":"Istrator"}];

console.log(filterUsers("Su")(users));

<script src='https://cdn.jsdelivr.net/g/lodash@4(lodash.min.js+lodash.fp.min.js)'></script>

edited Nov 26, 2019 at 11:28

answered Nov 26, 2019 at 11:23

Ori Drori

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1 Comment

Peppermintology Over a year ago

Wow, seems so straight forward when you know how / what you're looking for. Thanks!

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