Get data from active row of detail

this.get("ActiveRow") return id, try this to get data from row

const activeRecordId = this.get("ActiveRow");
const gridData = this.getGridData();
const value = gridData.get(activeRecordId).values;
console.log("Active Record: ", {value});

Tyler,

In addition to what Romodan shared:

// get the current row entity (not just the Id)
var item = this.getActiveRow();
var colValue = item.get("UsrSomeColumn");

Which does the same as this:

var currentId = this.get("ActiveRow");
var data = this.getGridData();
var item = gridData.get(currentId);
var colValue = item.get("UsrSomeColumn");

Note, for either of these approaches, only the columns displayed in the detail will be available since they are the only columns added to the ESQ populating the detail. If you want other columns available, that might not be displayed in the detail, you can add those to the ESQ by overriding the initQueryColumns, like this:

initQueryColumns: function(esq) {
    this.callParent(arguments);
 
    if (!esq.columns.contains("UsrSomeOtherColumn")) {
        esq.addColumn("UsrSomeOtherColumn");
    }
}

Ryan