/**
 * Add this method to app/Models/ProbationCase.php, near the other
 * relations (e.g. right after `completion()`). Nothing else in that
 * file needs to change.
 */

    public function ledger()
    {
        return $this->hasOne(\App\Models\ProbationCaseLedger::class, 'probation_case_id');
    }