我想在 Laravel 5.8 中构建一个功能，可以帮助我上传 CSV 文件并将数据导入数据库，但这一切都应该在后台(服务器端)进程中进行，一旦完成，请发送电子邮件至登录用户。我想在开始该过程之前更好地了解我应该在 Scheduler 的帮助下执行此操作，还是有更好的方法或库可以帮助我实现此功能。

期待听到您的想法:)

谢谢。

最佳答案

从头开始:

创建一个invoices表和对应的模型:

php artisan make:model Invoice -m

您的模型应如下所示:

<?php

namespace App;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;

class Invoice extends Model
{
    protected $table = 'invoices';
    protected $fillable = [
        'user_id',
        'processed',
        'path'
    ];

    public function scopeNotProcessed(Builder $query)
    {
        return $this->where('processed', '=', false);
    }
}

这是 invoices 表:

public function up()
{
    Schema::create('invoices', function (Blueprint $table) {
        $table->increments('id');
        $table->string('path')->nullable(false);
        $table->boolean('processed')->default(false)->nullable(false);
        $table->timestamps();
    });
}

完成这些事情后，进行如下操作:

创建一个存储库，上传您的 csv 文件。这个文件应该放在 app/Repositories/CSVRepository:

<?php

namespace App\Repositories;

use Illuminate\Support\Facades\Storage;
use App\Invoice;

class CSVRepository {

    /**
     * CSVRepository constructor.
     */
    public function __construct()
    {
        //
    }

    /**
     * @param $file
     * @param $extension
     * @return mixed
     */
    public function uploadCSV($file, $extension){
        return $this->upload($file, $extension);
    }

    /**
     * @param $file
     * @param $extension
     * @return mixed 
     */
    private function upload($file, $extension){
        $path = Storage::putFileAs("myFileName", $file, uniqid().".".$extension);
        $uploadedFile = Invoice::create([
            'path' => $path,
            'processed' => false,
        ]);

        return $uploadedFile;
    }
}

现在，创建您的 Controller ，它将使用 CSVRepository 将文件上传到服务器: 上传功能应如下所示:

public function upload(CSVRepository $CSVRepository)
{
    try{
        $file = Input::file('file');
        $extension = strtolower($file->getClientOriginalExtension());
        if ($extension !== 'csv'){
            $errors['file'] = 'This is not a .csv file!';
            return redirect()->back()->withInput()->withErrors($errors);
        }
        $CSVRepository->uploadCSV($file, $extension); 
        $message = array(
            'type' => 'success',
            'text' => 'Your file has been uploaded! You will receive an email when processing is complete!',
            'title' => 'Success',
        );
        session()->flash('message', $message);
        return redirect('route-to-redirect');
    }catch (\Exception $exception){
        return abort(Response::HTTP_INTERNAL_SERVER_ERROR, 'Internal Server Error');
    }
}

现在，您需要一个作业，它为您处理文件:

开始使用 artisan 命令创建命令:

php artisan make:command ProcessCSVCommand

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use App\Invoice;

use Illuminate\Support\Facades\Storage;

class ProcessCSVCommand extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'csv:process';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Process an uploaded CSV file';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        try{
            //Retrieve only no processed files:
            $invoices = Invoice::notProcessed()->get();
            if (count($invoices) < 1){
                $this->info('No files found');
                return;
            }
            //Process the files:
            $invoices->map(function($invoice){ 
                $file = fopen("storage/app/".$invoice->path, "r");
                while (!feof($file)){
                    $line = fgets($file); 
                    //Here you have a loop to each line of the file, and can do whatever you need with this line:
                    if(strlen($line) > 0){ //If the line is not empty:
                        // Add your logic here:
                    }
                    // Don't forgot to change your `processed` flag to true:
                    $invoice->processed = true;
                    $invoice->save(); 
                } 
            });
        }catch (\Exception $exception){
            $this->error("Something went wrong");
            return $exception->getMessage();
        }
    }
}

现在，打开你的 app/Console/Kernel.php 文件:

在 $commands 数组中注册您的新命令:

$commands = [
    Commands\ProcessCSVCommand::class,
];

安排在您的服务器上运行的作业，检查要处理的文件，如果是，则处理它们:

在同一个文件中，现在在 schedule 函数中:

protected function schedule(Schedule $schedule)
{
     $schedule->command('csv:process')
              ->everyFiveMinutes();
}

希望对您有所帮助。

关于php - 如何使用 PHP (Laravel 5.8) 在后台进程中上传 CSV 文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56518900/