Generic Grouping of objects properties - ramda.js

Question

I'm trying to group this object by name, so in fine I would be able to distinguish all names 'duval' from 'lulu':
const groupName = R.groupBy(R.prop('name'), [data]);
But this won't work on:
let data = {
benj: {
content : undefined,
name : 'duval',
complete: false,
height : 181
},
joy: {
content : undefined,
name : 'duval',
complete: true
},
kaori: {
content : undefined,
name : 'lulu',
complete: true
},
satomi: {
content : undefined,
name : 'lulu',
complete: true
}
}
Should I change the format of my object, or is there a way to do it in this kind of object ?

Answer 1

Passing [data] to groupBy is not going to help much. You want to group a list containing a single item. The fact that that item has properties like 'bennj' and 'joy' rather than 'name' is only part of the issue.
You can get something that will work, I think, if this output would be useful:
{
duval: {
benj: {
content: undefined,
name: "duval",
complete: false,
height: 181
},
joy: {
content: undefined,
name: "duval",
complete: true
}
},
lulu: {
kaori: {
content: undefined,
name: "lulu",
complete: true
},
satomi: {
content: undefined,
name: "lulu",
complete: true
}
}
}
But it's a bit more involved:
compose(map(fromPairs), groupBy(path([1, 'name'])), toPairs)(data)
toPairs converts the data to a list of elements something like this:
[
"benj",
{
complete: false,
content: undefined,
height: 181,
name: "duval"
}
]
then groupBy(path[1, 'name']) does the grouping you're looking to do, by finding the name on the object at index 1 in this list.
And finally map(fromPairs) will turn these lists of lists back into objects.
It's not a particularly elegant solution, but it's fairly typical when you want to do list processing on something that's not really a list.