Laravel updating a hasMany relationship - php

Question

In my system users can have many timesheets, timesheets can have many data.
I'm trying to update the data rows in the data_timesheet table. I'm using this:
$data = ['column_1' => 'value'];
$this->findTimesheetById($id)->data()->saveMany($data);
However, it's giving me the following error:
Argument 1 passed to Illuminate\Database\Eloquent\Relations\HasOneOrMany::save() must be an instance of Illuminate\Database\Eloquent\Model, array given
I know why it's giving me the error, because I need to send it a model as opposed to an array. How can I send in a model, when the values being passed are from a user form?
EDIT:
I can do this which works, but there must be a better way?
$data = $this->findTimesheetById($id)->data();
$data->delete();
$data->insert($data);

Answer 1

The way to do that is:
1) You create a file model and put it in the Models folder. That model can even almost empty, like this:
<?php namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use Session;
use DB;
class Booking extends Model{
2) Then in the Controller you create an instance of that Model, like this
$theinstance = new Booking;
3) Then you use that object to have the values given, like this:
$theinstance->name = $name;
$theinstance->telephone = $telephone;
$theinstance->save();
That would be the way to save data.
Now, with regards to the update, at the Controller you can have something like this:
$photosslide = Property::returnPhotosSlide($id);
$propertydetails = Property::returnPropertyDetails($id);
$alsointown = Property::returnAlsoInTown($id);
return view('detailsproperty', compact('photosslide','propertydetails','alsointown'));
This sends the values from a Form into the Model
and once you are in the Model, just do an Update query.