Ramda remove objects from array based on nested value

Question

I'm trying to remove an object from an array of objects if a certain value exists in nested data.

The data being returned from the API is shaped like this:

Array [
  Object {
    "id": "/db/Shifts/123",
    "applicants": Object {
      "applicants": Array [
        "/db/User/12",
        "/db/User/13",
      ],
  },
  Object {
    "id": "/db/Shifts/456",
    "applicants": Object {
      "applicants": Array [
        "/db/User/12",
        "/db/User/14",
      ],
  },  
  Object {
    "id": "/db/Shifts/789",
    "applicants": Object {
      "applicants": Array [
        "/db/User/13",
        "/db/User/14",
      ],
  },
]

Using Ramda, how would I filter out the shifts where User 12 exists in the array of applicants, which would be located at applicants.applicants.

I am not able to flatten the data in this case, the list of applicants for each shift does have to be an array contained in an object.

I tried this:

var hasApplied = pathEq(['applicants', 'applicants'], 'db/User/12');
console.log(filter(hasApplied, shifts));

But I don't think that is quite right because applicants.applicants is an array, I feed like I need to be feeding it one more function to get into the array of applicants but I'm not sure what.

Scott Christopher · Accepted Answer · 2017-10-24 22:14:25Z

2

Your use of R.pathEq is resulting in the user ID being compared with each array of IDs for equality, rather than checking whether each array contains the given ID.

You could instead make use of R.pathSatisfies along with R.contains

const hasApplied = R.pathSatisfies(R.contains('/db/User/12'), ['applicants', 'applicants'])

answered Oct 24, 2017 at 22:14

Scott Christopher

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