Laravel manually creates array pagination
This article mainly introduces the implementation code for manually creating array paging in Laravel. The editor thinks it is quite good. Now I will share it with you and give it as a reference.
This article introduces the implementation code of manually creating array paging in laravel and shares it with everyone. The details are as follows:
laravel paging function:
There are several ways to paginate data. The simplest is to use the paginate or simplePaginate method in the Query Builder or Eloquent Query.
paginate usage is as follows:
//控制器中 $users = DB::table('users')->paginate(15); return view('user.index', ['users' => $users]); //视图中 {{ $users->links() }}
The effect is as follows:
「Previous page」「1」「 2" "3" "Next page"
simplePaginate usage is as follows:
//控制器中 $users = User::where('votes', '>', 100)->simplePaginate(15); return view('user.index', compact('users')); //视图中 {{ $users->links() }}
The effect is as follows:
「Previous page」「Next page」
Note:
If you only need to display a simple "Next page" in paginated view "Page" and "Previous Page" links, that is, there is no need to display links for each page number. It is recommended to use the simplePaginate method to perform more efficient queries.
Currently, Laravel cannot efficiently perform paging operations using the groupBy statement. If you need to use groupBy in a paginated result set, it is recommended that you query the database and create the paginator manually.
Sometimes you may encounter this situation. $dataA and $dataB are two different data sets taken out from the database. You need to assign $dataA and $dataB to the view at the same time. And perform paging display, what should we do in this case?
#In this case, laravel array paging can be used.
In fact, the laravel documentation has already written about how to use the paging class to paginate, but there is no detailed explanation.
Manually create pagination
If you want to manually create a paging instance and finally get an array type result, you can create an IlluminatePaginationPaginator or IlluminatePaginationLengthAwarePaginator instance according to your needs.
For details, please see this code in IlluminatePaginationLengthAwarePaginator:
public function __construct($items, $total, $perPage, $currentPage = null, array $options = []) { foreach ($options as $key => $value) { $this->{$key} = $value; } $this->total = $total; $this->perPage = $perPage; $this->lastPage = max((int) ceil($total / $perPage), 1); $this->path = $this->path !== '/' ? rtrim($this->path, '/') : $this->path; $this->currentPage = $this->setCurrentPage($currentPage, $this->pageName); $this->items = $items instanceof Collection ? $items : Collection::make($items); }
The following is the specific implementation code:
//控制器中 public function index(LiveService $liveService, Request $request) { //数据A $dataA = User::where('status', 1)->get()->toArray(); //数据B $dataB = User::where('status', 2)->get()->toArray(); $data = array_merge($dataA, $dataB); //当前页数 默认1 $page = $request->page ?: 1; //每页的条数 $perPage = 4; //计算每页分页的初始位置 $offset = ($page * $perPage) - $perPage; //实例化LengthAwarePaginator类,并传入对应的参数 $data = new LengthAwarePaginator(array_slice($data, $offset, $perPage, true), count($data), $perPage, $page, ['path' => $request->url(), 'query' => $request->query()]); return view('admin.users.index', compact('data')); } //视图中 {{ $data->links() }}
The above basically completes array paging. The general process is that the controller obtains the current page number, instantiates the LengthAwarePaginator
class and passes in the necessary parameters. According to the number of each page Use the array_slice() method to obtain the data to be displayed on each page.
The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!
Related recommendations:
The use of action classes in Laravel program architecture design
##
The above is the detailed content of Laravel manually creates array pagination. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

When developing websites using CraftCMS, you often encounter resource file caching problems, especially when you frequently update CSS and JavaScript files, old versions of files may still be cached by the browser, causing users to not see the latest changes in time. This problem not only affects the user experience, but also increases the difficulty of development and debugging. Recently, I encountered similar troubles in my project, and after some exploration, I found the plugin wiejeben/craft-laravel-mix, which perfectly solved my caching problem.

Want to learn the Laravel framework, but suffer from no resources or economic pressure? This article provides you with free learning of Laravel, teaching you how to use resources such as online platforms, documents and community forums to lay a solid foundation for your PHP development journey from getting started to master.

Laravel provides a comprehensive Auth framework for implementing user login functions, including: Defining user models (Eloquent model), creating login forms (Blade template engine), writing login controllers (inheriting Auth\LoginController), verifying login requests (Auth::attempt) Redirecting after login is successful (redirect) considering security factors: hash passwords, anti-CSRF protection, rate limiting and security headers. In addition, the Auth framework also provides functions such as resetting passwords, registering and verifying emails. For details, please refer to the Laravel documentation: https://laravel.com/doc

Article summary: This article provides detailed step-by-step instructions to guide readers on how to easily install the Laravel framework. Laravel is a powerful PHP framework that speeds up the development process of web applications. This tutorial covers the installation process from system requirements to configuring databases and setting up routing. By following these steps, readers can quickly and efficiently lay a solid foundation for their Laravel project.

The Laravel framework has built-in methods to easily view its version number to meet the different needs of developers. This article will explore these methods, including using the Composer command line tool, accessing .env files, or obtaining version information through PHP code. These methods are essential for maintaining and managing versioning of Laravel applications.

In the Laravel framework version selection guide for beginners, this article dives into the version differences of Laravel, designed to assist beginners in making informed choices among many versions. We will focus on the key features of each release, compare their pros and cons, and provide useful advice to help beginners choose the most suitable version of Laravel based on their skill level and project requirements. For beginners, choosing a suitable version of Laravel is crucial because it can significantly impact their learning curve and overall development experience.

Laravel and ThinkPHP are both popular PHP frameworks and have their own advantages and disadvantages in development. This article will compare the two in depth, highlighting their architecture, features, and performance differences to help developers make informed choices based on their specific project needs.
