i have a collection named detailed as below :
Collection {#1421 ▼
#items: array:2 [▼
3943 => Collection {#1419 ▼
#items: array:2 [▼
0 => RoomPricingHistory {#923 ▶}
1 => RoomPricingHistory {#1042 ▶}
]
}
3944 => Collection {#1420 ▼
#items: array:2 [▼
0 => RoomPricingHistory {#1153 ▶}
1 => RoomPricingHistory {#1264 ▶}
]
}
]
}
now i want to get the sum of RoomPricingHistory for 3943 item and 3944 ofc it can be more of 2 item so i want to get the sum of each collection how can i achieve that ??
The Collection sum method can take a callback so you can define what is going to be calculated. In this case you can call sum on the main collection and in the callback which will give you access to the internal collections, also call sum.
$detailed->sum(function ($group) {
return $group->sum('sales_price');
});
Laravel 6.x Docs - Collections - Available Methods - sum
Since that isn't what you are looking for, you can use something like mapWithKeys to go through the collection and call sum for the groups to get the sum for each group:
$sums = $detailed->mapWithKeys(function ($group, $key) {
return [$key => $group->sum('sales_price')];
});
Laravel 6.x Docs - Collections - Available Methods - mapWithKeys
Related
Possibly an obvious one, but here it is:
After dd'ing a query result, I have:
$items = DB::table('my_table')->get(['id']);
dd($items);
Which results in:
Collection {#228 ▼
#items: array:1 [▼
0 => {#227 ▼
+"id": 2
}
]
}
Then, when I try to flatten it, it ignores me:
dd($items->flatten());
Resulting in:
Collection {#209 ▼
#items: array:1 [▼
0 => {#227 ▼
+"id": 2
}
]
}
Shouldn't I receive something like the flattened version of the collection?
How can I do it?
Thanks in advance.
You need to check it like
$flattened = $items->flatten();
dd($flattened->all());
// or dd($items->flatten()->all());
Source from official documentation.
If you want to fetch id and completely flatten then use
$items = DB::table('my_table')->pluck('id');
dd($items);
Here is the pluck link.
I'm trying my best to prevent from looping over a collection to get more data that I need for a data table. I need a way to combine these 2 collections or arrays.
I have 2 functions inside a model that calls an API that gives me an array of data that I convert into a collection.
Orders()
public function orders(){
$orders_array = $this->api()->request('orders.json');
return collect($orders_array);
}
Returns:
Collection {#274 ▼
#items: array:2 [▼
0 => {#282 ▼
+"id": 628602961977
}
1 => {#270 ▶}
order_meta()
public function order_meta($order_id){
$order_metafields_array = $this->api()->request('meta.json');
return collect($order_metafields_array);
}
Returns:
Collection
#items: [
+"name": "meta_data"
]
What I am wanting to do is inject the order_meta() into each order using the order ID.
I guess I am wanting to do something like this:
public function orders_detailed(){
$orders = $this->orders();
$keyed = $orders->mapWithKeys(function ($item) {
return [$item['meta'] => $this->order_metafields($item['id'])];
});
}
In hopes it will return:
Collection {#274 ▼
#items: array:2 [▼
0 => {#282 ▼
+"id": 628602961977
+meta => {
+"name":"meta_data"
}
}
1 => {#270 ▶}
Is something like this possible? I'm also open to merging it in as an array first, then creating a collection.
I have the following Eloquent query in a Laravel 5.2 project:
$regsByCtryCollection = Organisation::join('countries_currencies', 'countries_currencies.id', '=', 'organisations.country_id')
->select(DB::raw('DISTINCT LCASE(countries_currencies.country_code) AS ctry, COUNT(organisations.id) AS val'))
->groupBy('ctry')
->get();
The raw query produces this output:
ctry val
at 1
au 5
br 1
The Eloquent call produces a collection of three rows (matching raw query output) like this:
Collection {#791 ▼
#items: array:3 [▼
0 => Organisation {#777 ▼
#table: "organisations"
#hidden: []
........
#attributes: array:2 [▶]
#original: array:2 [▼
"ctry" => "at"
"val" => 1
]
#relations: array:5 [▶]
........
}
1 => Organisation {#778 ▶}
2 => Organisation {#779 ▶}
]
}
I then pluck the values and format for Highmaps like this
$regsByCtry = $regsByCtryCollection->pluck('ctry', 'val')->map(function($country, $value) {
return [
"hc-key" => $country,
"value" => $value
];
})->values()->toJson();
And one of the values is dropped and I get this:
[
{"hc-key":"br","value":1},
{"hc-key":"au","value":5}
]
Why is the first entry getting dropped?
{"hc-key":"at","value":1}
I am using this same process with two other Eloquent queries and it works as expected, but just not on this collection.
Additionally, I also sum all the values in the array of objects like this:
$regsTotal = array_sum($regsByCtryCollection->pluck('val')->toArray());
And I get the correct value, including all three records summed:
$regsTotal = 7;
The issue is with pluck('ctry', 'val'). This will return val as key & ctry as value. In your query output at & br has same value 1. So one of it getting replaced by the other one.
Try pluck('val', 'ctry')->map(function($value, $country)
Reference
collection is obtrained like this
Collection {#241 ▼
#items: array:2 [▼
"Oct-2016" => Collection {#225 ▼
#items: array:1 [▼
0 => Event {#243 ▶}
]
}
"Nov-2016" => Collection {#236 ▼
#items: array:2 [▼
0 => Event {#244 ▶}
1 => Event {#245 ▶}
]
}
]
}
i want to show data like .
Oct 2016
event 1
Nov 2016
event 1
event 2
i am new in laravel kindly help me how to show collection key in title Oct-2016 and list of each key collection in blade
Laravel collections implement php's iterable functionality. In other words, you can just use foreach loops. This will give you the basic idea.
foreach ($collection as $month => $events)
{
var_dump($month);
foreach ($events as $event)
{
var_dump($event);
}
}
I have this collection:
Collection {#604 ▼
#items: array:4 [▼
0 => CarsMark {#596 ▶}
1 => CarsMark {#594 ▶}
2 => CarsMark {#594 ▶}
3 => CarsMark {#595 ▶}
]
}
As you can see there is two the same items (594). How can i retrieve all items from with collection without the same items?
Use the collection's unique method:
$unique = $collection->unique();