I'm trying to convert an array of objects into an array of integers extracting values from those objects using Ramda.js. I need to keep just the node participants with the uid values, however, it seems that I'm not doing this correctly.
I'm want to transform this
var listObejcts = {
"participants": [
{
"entity": {
"uid": 1
}
},
{
"entity": {
"uid": 2
}
}
]
}
to this:
{
"participants": [1, 2]
}
I've tried the code above but it didn't work. It's still returning a list of objects.
var transform = pipe(
over(lensProp('participants'), pipe(
filter(pipe(
over(lensProp('entity'), prop('uid'))
))
))
)
console.log(transform(listObejcts))
Does anybody know how I could achieve that?
It's possible to edit the code here - https://repl.it/repls/PrimaryMushyBlogs
One possibility is to combine evolve with map(path) like this:
const transform = evolve({participants: map(path(['entity', 'uid']))})
var listObjects = {participants: [{entity: {uid: 1}}, {entity: {uid: 2}}]}
console.log(transform(listObjects))<script src="https://bundle.run/[email protected]"></script><script>
const {evolve, map, path} = ramda </script>While I'm sure that there is a lens-based solution, this version looks pretty straightforward.
A lens-based solution is certainly possible. Here is one such:
var transform = over(
lensProp('participants'),
map(view(lensPath(['entity', 'uid'])))
)
var listObjects = {participants: [{entity: {uid: 1}}, {entity: {uid: 2}}]}
console.log(transform(listObjects))<script src="https://bundle.run/[email protected]"></script><script>
const {over, lensProp, map, view, lensPath} = ramda </script>Collected from the Internet
Please contact [email protected] to delete if infringement.
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