In the Internet era, videos have become an important way for people to obtain information, learn knowledge, and have entertainment. Therefore, building an online video platform has become a need for many developers. This article will introduce how to use the Laravel framework to develop an online video platform and provide specific code examples.

1. Determine requirements

Before starting development, we need to clarify our needs first. A basic online video platform needs to have the following functions:

• Video upload
• Video playback
• Video classification
• Video search
• Video Comment
• User Registration and Login
• User Management

2. Environment Configuration

Start using the Laravel framework Before developing, we need to configure the environment first. You can use an integrated environment such as XAMPP or WAMPP for configuration, and install Composer, which is a dependency manager for PHP and can easily manage the dependency libraries required by the Laravel framework.

3. Create project

After the environment configuration is completed, we can start creating the Laravel project. Open the terminal and enter the following command:

composer create-project --prefer-dist laravel/laravel videoplatform

This command will create a Laravel project named "videoplatform" in the current directory.

4. Database design and migration

Next, we need to design the database and perform migration. In this project, the tables we need to design are as follows:

• users (storage user information)
• videos (storage video information)
• categories (storage video Classification information)
• comments (storage video comment information)

Execute the following command in the project root directory to create a migration:

php artisan make:migration create_users_table
php artisan make:migration create_videos_table
php artisan make:migration create_categories_table
php artisan make:migration create_comments_table

Edit each migration file, Carry out database design.

After completing the database design, return to the terminal and execute the following command to migrate:

php artisan migrate

5. Routing design

In Laravel, routing controls How the URL should respond. Edit the routes/web.php file and design the route:

Route::get('/', 'HomeController@index')->name('home');
Route::get('/videos', 'VideoController@index')->name('videos.index');
Route::get('/videos/create', 'VideoController@create')->name('videos.create');
Route::post('/videos/store', 'VideoController@store')->name('videos.store');
Route::get('/videos/{id}', 'VideoController@show')->name('videos.show');
Route::get('/videos/{id}/edit', 'VideoController@edit')->name('videos.edit');
Route::put('/videos/{id}', 'VideoController@update')->name('videos.update');
Route::delete('/videos/{id}', 'VideoController@destroy')->name('videos.destroy');
Route::post('/comments', 'CommentController@store')->name('comments.store');

6. View design

View is an important interface for users to interact with applications, and it needs to be well designed and beautiful. Create the following view files in the resources/views directory:

• home.blade.php (home page)
• videos/index.blade.php (video list page)
• videos/create.blade.php (video upload page)
• videos/show.blade.php (video playback page)
• videos/edit.blade.php (video editing page)

7. Model design

In Laravel, a model is a class corresponding to a database table. They are responsible for interacting with the database and providing data to the controller. Create the following model file in the app directory:

• User.php
• Video.php
• Category.php
• Comment.php

8. Controller design

In Laravel, the controller is responsible for getting data from the model and presenting it in the view. Create the following controller file in the app/Http/Controllers directory:

• HomeController.php
• VideoController.php
• CommentController.php

9. Code display

The above is the general process of developing an online video platform. Some core code snippets are shown below.

Add an association relationship in the Video model and define an accessor named "thumbnail" to obtain the thumbnail of the video.

class Video extends Model
{
    // 添加分類關(guān)聯(lián)關(guān)系
    public function category()
    {
        return $this->belongsTo(Category::class);
    }

    // 添加評(píng)論關(guān)聯(lián)關(guān)系
    public function comments()
    {
        return $this->hasMany(Comment::class);
    }

    // 定義縮略圖訪問(wèn)器
    public function getThumbnailAttribute()
    {
        return Storage::url($this->attributes['thumbnail']);
    }
}

Implement the video upload function in VideoController:

class VideoController extends Controller
{
    // 顯示視頻上傳頁(yè)面
    public function create()
    {
        $categories = Category::all();

        return view('videos.create', compact('categories'));
    }

    // 處理視頻上傳請(qǐng)求
    public function store(Request $request)
    {
        $request->validate([
            'title' => 'required|max:255',
            'description' => 'nullable|max:1000',
            'category_id' => 'required|numeric',
            'video_file' => 'required|mimetypes:video/mp4|max:102400',
            'thumbnail_file' => 'required|mimetypes:image/jpeg,image/png|max:1024',
        ]);

        $video = new Video();

        $video->title = $request->get('title');
        $video->description = $request->get('description');
        $video->category_id = $request->get('category_id');
        $video->user_id = Auth::id();

        $video_file = $request->file('video_file');
        $video_file_name = uniqid().'.'.$video_file->getClientOriginalExtension();
        Storage::putFileAs('public/videos', $video_file, $video_file_name);
        $video->video_file = 'storage/videos/'.$video_file_name;

        $thumbnail_file = $request->file('thumbnail_file');
        $thumbnail_file_name = uniqid().'.'.$thumbnail_file->getClientOriginalExtension();
        Storage::putFileAs('public/videos/thumbnails', $thumbnail_file, $thumbnail_file_name);
        $video->thumbnail = 'storage/videos/thumbnails/'.$thumbnail_file_name;

        $video->save();

        return redirect()->route('videos.index');
    }
}

Implement the comment publishing function in CommentController:

class CommentController extends Controller
{
    public function store(Request $request)
    {
        $request->validate([
            'video_id' => 'required|numeric',
            'content' => 'required|max:1000',
        ]);

        $comment = new Comment();

        $comment->video_id = $request->get('video_id');
        $comment->user_id = Auth::id();
        $comment->content = $request->get('content');

        $comment->save();

        return redirect()->back();
    }
}

So far, you have learned to use the Laravel framework to develop An online video platform. Of course, there are many other functions that you need to develop and improve yourself. Hope this article can be helpful to you.

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