Filtering object array with ramda.js

Question

I have an array of objects. I want to filter it to get objects, which any property contains the mathing string.

If my array is

 var data = [
 {"name: "John",
 "surname": "Smith"},
 {"name": "Peter",
 "surname: "Smithie"}]

I and filter with the string "Smi", it should return both items. If string is "John", only the first one.

This is my code:

var filtered = R.filter(R.where({ x: R.contains("Smi")}))(data);

I get error though:

Cannot read property 'indexOf' of undefined

Could someone help me out with my Ramda function? Must the something small I'm missing, I guess. Thanks in advance

The problem with this approach is that in where({x: contains('Smi')}), the x has no meaning. Ramda does not include a notion of "for any key" like this. — Scott Sauyet
– Scott Sauyet, Commented Sep 27, 2016 at 12:29

Scott Sauyet · Accepted Answer · 2016-09-26 18:49:41Z

2

You could do something like this:

R.filter(R.pipe(R.values, R.any(R.contains('Smi'))))(data)

This is taking advantage of an undocumented feature of contains, though, which is meant to work on lists, not strings. But it does work.

answered Sep 26, 2016 at 18:49

Scott Sauyet

50.9k5 gold badges57 silver badges111 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Redu · Accepted Answer · 2016-09-26 14:02:07Z

1

I can not answer in Ramda but if you would like to implement the same functionality in JS you might easily do as follows;

var   data = [{"name": "John", "surname": "Smith"}, {"name": "Peter", "surname": "Smirnof"}],
getObjects = (d,f) => d.filter(o => Object.keys(o).some(k => o[k].includes(f)));
console.log(getObjects(data,"Smi"));
console.log(getObjects(data,"Jo"));

answered Sep 26, 2016 at 14:02

Redu

26.3k6 gold badges61 silver badges84 bronze badges

1 Comment

trincot Over a year ago

Like the Rambda-less solution, which is not significantly bigger.

Collectives™ on Stack Overflow

Filtering object array with ramda.js

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related