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How to optimize code in Laravel?
(1 answer)
Closed 6 years ago.
I have the following code in Laravel, I get collection from request with a joined table translate.
That to get value from joined table I should use additional loop to format array which will be added to select list in blade template :
$arr = [];
$objectModel = new PlacesType();
$objectModel::$language = 2;
$subcategories = $objectModel::with("translate")->get();
foreach($subcategories as $key => $item){
$arr[$item->translate()->first()->objectId] = $item->translate()->first()->title;
}
return $arr;
So, how can I improve this code and escape this loop:
foreach($subcategories as $key => $item){
$arr[$item->translate()->first()->objectId] = $item->translate()->first()->title;
You could use mapWithKeys I guess?
https://laravel.com/docs/5.3/collections#method-mapwithkeys
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imagine a table like this:
id
name
1
sam
2
lily
3
sam
4
tom
5
lily
i want to count the number of times that each name is repeated and store it in a variable.
expected result :count sam = 2 ,count lily = 2, count tom = 1
how can i do such thing in laravel?
Try this:
public function totalRepeatedName() {
$total = User::groupBy('name')
->selectRaw('count(*) as count, name')
->pluck('count', 'name');
return $total;
}
I'm assuming your model name is 'User'
$usernames = [];
$usercounts = [];
$names = User::->groupby('name')->get();
foreach ($names as $key => $name) {
$data = User::where('name', $name->name)->count();
array_push($usernames, $name->name);
array_push($usercounts, $data);
}
values will be available in $usernames and $usercounts. if you want them in same array use key value pair array
This question already has answers here:
Laravel OrderBy Random
(4 answers)
Closed 2 years ago.
Usecase: Show top 3 featured images randomly then followed by non featured images with paginating. I have around 17 featured images.
How I can random with orderBy.
DB:featured: 0 or 1 in DB
$images = Images::OrderBy('featured', 'desc')->paginate(10);
Try
Without Pagination
//Latest 3 featured images
$top3FeaturedImages = Images::where('featured', 1)
->latest()
->take(3)
->get();
$randomUnfeaturedImages = Images::where('featured', 0)
->inRandomOrder()
->take(7)
->get();
$result = $top3FeaturedImages->concat($randomUnfeaturedImages);
With Pagination
$featuredImages = Images::where('featured', 1)
->latest()
->take(3)
->get();
$randomUnfeaturedImages = Images::where('featured', 0)
->inRandomOrder()
->paginate(7);
//In this case you need to pass 2 variables to the view $featuredImages & paginated $randomUnfeaturedImages
This question already has answers here:
PHP Carbon, get all dates between date range?
(11 answers)
Closed 2 years ago.
I want to get dates between two dates in an array. The scenario is the following: I want to get daily sales cash collection and there is one filter of $fromdate and $todate. So even if I don't get any sales for an specific date I have to show that in the table.
You can use CarbonPeriod for this.
I found something helpful at https://stackoverflow.com/a/50854594/13642447.
Use DatePeriod class to create the range of dates based on months or days
<?php
$begin = new DateTime( '2012-08-01' );
$end = new DateTime( '2013-10-31' );
$interval = new DateInterval('P1M');
$daterange = new DatePeriod($begin, $interval ,$end);
$dates = [];
foreach($daterange as $date){
$dates[] = $date->format("Y-m-d");
}
var_dump($dates);
?>
if you want the range of dates to be by days, say from 2012-08-01 to 2012-08-25 then just change the interval like this $interval = new DateInterval('P1D');.
I have two tables questions and answers. Question table has relationship on answer table.
When paginating eloquent results on the first page it returns lets say 7 unanswered questions (with empty relationship) and 3 with answered questions, but I need it to return 5 with answers and 5 without answers in total 10.
Right now i'm doing this:
Question::with(['user', 'answers])->paginate(10);
Is there any way to return always 5 answered/5 unanswered instead of random?
The paginate() method returns a LengthAwarePaginator object so you can create your own as the doc suggests. Maybe (I haven't tested it) you can do it more or less like this:
$limit = $request->input('limit', 5);
$page = $request->input('page', 1);
$total = Question::count();
$offset = ($page - 1) * $limit;
$items1 = Question::with(['user', 'answers'])->has('answers')->limit($limit)->offset($offset)->get();
$items2 = Question::with(['user', 'answers'])->doesntHave('answers')->limit($limit)->offset($offset)->get();
$paginator = new \Illuminate\Pagination\LengthAwarePaginator(
$items1->concat(items2),
$total,
$limit,
$page,
['path' => $request->getPathInfo()]
);
return response()->json($paginator);
I'm in a situation where I'm doing a MySQL query with Codeigniter and where I have a lot of fields value request which are ALL the same.
Example:
$this->db->query('SELECT * FROM abc WHERE user_id = ? AND msg_from = ? AND msg_to != ?', [$id, $id, $id]);
This has just 3 question marks but the query I'm working on is HUGE and has 19 question marks WHICH ARE ALL THE SAME variable.
So I was trying to figure out how to tell Codeigniter all question marks are pointing to the same variable without having to fill an array with 19 times the same variable.
I thought of a for-loop but I wanted to know if a shortcut exist.
you should be able to do this with Codeigniters Query Builder pretty easily
Something like that should work:
$this->db
->select('*')
->from('abc');
$arrFields = array('users_id', 'msg_from', 'msg_to');
foreach($arrFields AS $val)
{
$this->db->where($val, $id);
}
$query = $this->db->get();