belongsTo('App\User', 'instructor_id', 'id'); } public function student() { return $this->belongsTo('App\User', 'student_id', 'id'); } public function assignment() { return $this->belongsTo('App\Models\WebinarAssignment', 'assignment_id', 'id'); } public function messages() { return $this->hasMany('App\Models\WebinarAssignmentHistoryMessage', 'assignment_history_id', 'id'); } }