->toArray() is giving empty arrays instead of objects - php

Question

I have a chunked array of 1000 Raw Objects:
class Raw extends Model
{
protected $table = 'raws';
protected $casts = [
'time' => 'datetime'
];
public $timestamps = [
"time"
];
private string $operationId;
private string $meterId;
private string $consoProd;
private string $timestep;
private string $unit;
private string $timestamp;
private string $value;
}
collect($measures)->chunk(1000)->each(function ($raws) use ($meter) {
$raws = $raws->map(function ($raw) use ($meter) {
return new \App\Models\Raw($meter['OperationID'], $meter['ID'], $meter['ConsoProd'], $meter['Timestep'], $meter['Unit'], $raw['t'], $raw['d']);
})->toArray();
dd($raws);
});
When I don't use ->toArray(), I can see a collection of 1000 Raw elements:
Illuminate\Support\Collection {#2857 ▼
#items: array:1000 [▼
0 => App\Models\Raw {#1857 ▼
#table: "raws"
#casts: array:1 [ …1]
+timestamps: array:1 [ …1]
-operationId: "ACC00000001"
-meterId: "30002431650000"
-consoProd: "Conso"
-timestep: "600000000000"
-unit: "kW"
-timestamp: "2018-09-11T00:00:00+02:00"
-value: "7"
#connection: null
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: false
+wasRecentlyCreated: false
#attributes: []
#original: []
#changes: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
#hidden: []
#visible: []
#fillable: []
#guarded: array:1 [ …1]
}
1 => App\Models\Raw {#1858 ▶}
2 => App\Models\Raw {#1859 ▶}
3 => App\Models\Raw {#1860 ▶}
But I try to convert it into an array with:
dd($raws->toArray());
I get:
array:1000 [
0 => []
1 => []
2 => []
3 => []
4 => []
5 => []
6 => []
7 => []
8 => []
9 => []...
Why ???

Answer 1

As you can see in Model.php, in it's constructor it accepts an array of attributes and not multiple parameters. So you need to do the creation of Raw.php model like so.
$raws = $raws->map(function ($raw) use ($meter) {
return new \App\Models\Raw([
'operationId' => $meter['OperationID'],
'meterId' => $meter['ID'],
'consoProd' => $meter['ConsoProd'],
'timestep' => $meter['Timestep'],
'unit' => $meter['Unit'],
'timestamp' => $meter['t'],
'value' => $meter['d'],
]);
})->toArray();
It was a little hard to assume your database columns, the keys in the array, has to be the column name of the database so please check it.