Recursive Array Map with Laravel Collection map() Helper - php

Question

I have a collection of data.
$array = [
[
'id' => 1,
'name' => 'some1',
'type' => 'type1',
'color' => 'color1',
'quantity' => 1
],
[
'id' => 2,
'name' => 'some1',
'type' => 'type1',
'color' => 'color1',
'quantity' => 1
],
[
'id' => 3,
'name' => 'some1',
'type' => 'type1',
'color' => 'color2',
'quantity' => 1
],
[
'id' => 4,
'name' => 'some2',
'type' => 'color1',
'color' => 'type1',
'quantity' => 1
],
......
];
that have different name, type, and color.
I want to group the data by name, type, and color and the result is array data with summary of the same group data.
First, I use this way :
function groupedData($array)
{
$collection = [];
collect($array)->groupBy('name')->map(
function ($item) use (&$collection) {
return $item->groupBy('type')->map(
function ($item) use (&$collection) {
return $item->groupBy('color')->map(
function ($item) use (&$collection) {
$quantity = $item->sum('quantity');
$collection[] = collect($item[0])->merge(compact('quantity'));
}
);
}
);
}
);
return $collection;
}
I expect the output should be like this :
$grouped = [
[
'id' => 1,
'name' => 'some1',
'type' => 'type1',
'color' => 'color1',
'quantity' => 2
],
[
'id' => 2,
'name' => 'some1',
'type' => 'type1',
'color' => 'color2',
'quantity' => 1
],
[
'id' => 3,
'name' => 'some2',
'type' => 'type1',
'color' => 'color1',
'quantity' => 2
],
[
'id' => 4,
'name' => 'some2',
'type' => 'type2',
'color' => 'color1',
'quantity' => 2
],
];
where quantity represent of the number of group items.
But, I the problem is when the required is changed. Just in case :
when user want add other category for grouping, example :
user want to group by name, type, color and size maybe.
Question : How to make a function that can make it more simple and flexible, so doesn't need to change the code when the require changes?
Thanks for the answer.

Answer 1

What you're looking for it sorting, not grouping.
Here's an easy way to do it:
function sort($array, $keys) {
return collect($array)->sortBy(function ($item) use ($keys) {
return array_reduce($keys, function ($carry, $key) use ($item) {
return $carry + $item[$key];
}, '');
})->all();
}
Here's a short explanation:
We're using the collection's sortBy method, which let's us use a callback function that'll return a string to determine the sort order.
We're using array_reduce on the keys to build a single string of all the values in the keys we want to sort by.
Laravel's collection object will use that resulting string to order the collection by.
Finally, we call the all method to get the underlying array from the collection. If you want to actually return a collection, you can remove that last all call.