push data in to a multidimensional array in laravel php - php

Question

I want to create a multidimensional array to save the data according the date and a category as follow. Then i need to display this data in my blade view?what can i do to achieve this.
'2012-05-05' => array(
'suspension' => 52,
'transmission' => '58'
),
'2012-05-05' => array(
'suspension' => 44,
'transmission' => 21
I have done the following in my controller i want a $reportData variable to load the data.
public function loadReports(Request $request)
{
$data = ['2012-05-05','2012-05-06'];
$salesItems = array();
$orderItems = OrderItem::with('spare', 'order')->get();
foreach ($orderItems as $key => $orderItem) {
if ($orderItem->spare->retailer_id == Auth::user()->id) {
array_push($salesItems, $orderItem);
}
}
$categories = App\Categories::all();
foreach ($data as $date) {
foreach ($categories as $category) {
$categoryValue = 0;
foreach ($salesItems as $salesItem) {
if ($date == $salesItem->order->orderDate) {
$categoryValue += $categoryValue + $salesItem->subTotal;
}
}
//error appears as illegal offset type
$reportData[$date][$category]=$categoryValue;
}
}
return View::make('Retailer/reports')->with('categories', $categories)->with('reportData', $reportData);
}

Answer 1

I haven't tested it but looking at your code it seems that you're passing an object as array index key as 2nd level array index:
$reportData[$date][$category] = $categoryValue;
^^^^^^^^^ this is an object
Dump your $category in the foreach loop & check if that is the case: dd($category)
If you're using Eloquent & your Categories Model has a name property, you'll probably want to take each category name as index value:
$reportData[$date][$category->name] = $categoryValue;

Answer 2

The error is occurring due to the fact that you are trying to use an Object as the array's index.
As per the laravel documentation (https://laravel.com/api/4.2/Illuminate/Database/Eloquent/Model.html#method_all) the all method you called here '$categories = App\Category::all();' would have returned an Eloquent Collection.
So when you iterated over the $categories array and referenced $category, you were referencing an object. In PHP an array can only be indexed by either an integer or a string. So you need to change the line of code where the error is to this
$reportData[$date][$category->someVar] = $categoryValue;
Where someVar is the name of a variable on the Eloquent model Category that references its name, such as 'suspension' etc.

Answer 3

While it doesn't answer your question you could use the Eloquent engine to make your life easier:
$orderItems = OrderItem::with('spare', 'order')->get();
foreach ($orderItems as $key => $orderItem) {
if ($orderItem->spare->retailer_id == Auth::user()->id) {
array_push($salesItems, $orderItem);
}
}
can be simplified (and made more efficient) with:
// Store the uid to save the call.
$user_id = Auth::user()->id;
// Apply the condition to the Eloquent query.
$orderItems = OrderItem::with(['spare' => function($query) use ($user_id) {
return $query->where('retailer_id', '=', $user_id);
}, 'order'])->get();
The other answers are correct, but you probably also want to initialise the $reportData array as before you start working with it.