Q:

Laravel - Disable Updated At when updating

Get a problem with update using query builder on laravel 5. I've tried to disabled the updated_at but keep failing.
Here is my code:
    $query = StockLog::where('stock_id', $id)->whereBetween('created_at', $from, $to])->update(['batch_id' => $max + 1]);

I've tried 2 ways:
first one at my model i set:
public function setUpdatedAtAttribute($value)
{
    /*do nothing*/
}

Second one:
$stocklog = new StockLog;
$stocklog->timestamps = false;

$query = $stocklog::where('stock_id', $id)->whereBetween('created_at', [$from, $to])->update([
        'batch_id' => $max + 1]);

both of them are failed. is there anyway to disabled the updated_at? 
Thanks in advance

A:

By default, Eloquent will maintain the created_at and updated_at columns on your database table automatically. Simply add these timestamp columns to your table and Eloquent will take care of the rest.

I don't really suggest removing them. But if you want use the following way.
add the following to your model:
public $timestamps = false;

This will disable the timestamps.
EDIT: it looks like you want to keep the created_at field, you can override the getUpdatedAtColumn in your model.
Use the following code: 
public function getUpdatedAtColumn() {
    return null;
}

A:

In your model, add this method:
/**
 * @param  mixed  $value
 * @return $this
 */
public function setUpdatedAt($value)
{
    return $this;
}

UPDATE: In Laravel 5.5:
Just try to use this in your model:
const CREATED_AT = null;
const UPDATED_AT = null;

A:

The accepted answer didn't work for me, but led me in the right direction to this solution that did:
class Whatever extends Model {
    //...
    const UPDATED_AT=NULL;
    //...

Laravel 5.3

