How to sortBy on nested object key?

[Oakyden]

Hi

How do i select a field in sortBy if its nested in an object?

For example:

{username: "alan", id: 123, goalsData: { steps: 10,000, calories: 1,700 } }

what if i want to sortBy 'goalsData.steps' ?

[Oakyden]

Just to note, i have worked around this by flattening the objects in the array of data that i'm using (response from a fetch call)

Code as follows:

      /*Give this function an array of objects and it will merge them into one.*/
        var merge = function(objects) {
        var out = {};
      
        for (var i = 0; i < objects.length; i++) {
          for (var p in objects[i]) {
            out[p] = objects[i][p];
          }
        }
      
        return out;
      }

      /* Give this function a nested object and it will make it single-level */

      var flatten = function(obj, name, stem) {
        var out = {};
        var newStem = (typeof stem !== 'undefined' && stem !== '') ? stem + '_' + name : name;
      
        if (typeof obj !== 'object') {
          out[newStem] = obj;
          return out;
        }
      
        for (var p in obj) {
          var prop = flatten(obj[p], p, newStem);
          out = merge([out, prop]);
        }
      
        return out;
      };

      /* Call the flatten function on each object in the fetch call response aray */
      const flattenedResponse = response.map(objectItem => flatten(objectItem) )

      console.log(flattenedResponse)
      this.setState({ leaderboardData : flattenedResponse });`