在 Laravel 中为数据库做种时使用进度条
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原文地址: http://stackoverflow.com/questions/37319676/
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Using a Progress Bar while Seeding a database in Laravel
提问by Sevenearths
I have to seed quite a lot of data into a database and I want to be able to show the user a progress bar while this happens. I know this is documented:
我必须将大量数据播种到数据库中，并且我希望能够在发生这种情况时向用户显示进度条。我知道这是记录在案的：
- https://laravel.com/docs/master/artisan#registering-commands(just above)
- http://symfony.com/doc/2.7/components/console/helpers/progressbar.html
- https://laravel.com/docs/master/artisan#registering-commands（就在上面）
- http://symfony.com/doc/2.7/components/console/helpers/progressbar.html
but I'm having problems including it in my seeder.
但是我在将它包含在播种机中时遇到了问题。
<?php
use Illuminate\Database\Seeder;
class SubDivisionRangeSeeder extends Seeder
{
public function run()
{
$this->output->createProgressBar(10);
for ($i = 0; $i < 10; $i++) {
sleep(1);
$this->output->advance();
}
$this->output->finish();
}
}
or
或者
<?php
use Illuminate\Database\Seeder;
class SubDivisionRangeSeeder extends Seeder
{
public function run()
{
$this->output->progressStart(10);
for ($i = 0; $i < 10; $i++) {
sleep(1);
$this->output->progressAdvance();
}
$this->output->progressFinish();
}
}
Any ideas?
有任何想法吗？
回答by Dmitry
You can get access to output through $this->command->getOutput()
您可以通过以下方式访问输出 $this->command->getOutput()
public function run()
{
$this->command->getOutput()->progressStart(10);
for ($i = 0; $i < 10; $i++) {
sleep(1);
$this->command->getOutput()->progressAdvance();
}
$this->command->getOutput()->progressFinish();
}
回答by Francesco Malatesta
Your code isn't working because you're using $this->outputin the wrong class. If you take a look again to the article you shared, $this-outputis used in an Artisan command class.
您的代码不起作用，因为您$this->output在错误的类中使用。如果您再次查看您共享的文章，它$this-output是在 Artisan 命令类中使用的。
In fact, every Artisan command is made with the Symfony Consolecomponent.
事实上，每个 Artisan 命令都是由Symfony Console组件创建的。
You're actually trying to use it in a database seeder :)
您实际上是在尝试在数据库播种机中使用它 :)
My suggestion: build your seeders and then call them with an "install" or "seed" customized command for your needs.
我的建议：构建您的播种机，然后根据您的需要使用“安装”或“种子”自定义命令调用它们。
回答by LytayTouch
Here is my implementation code,
这是我的实现代码，
<?php
use Illuminate\Database\Seeder;
class MediaTypeTableSeeder extends Seeder
{
/**
* Run the database seeds.
*
* @return void
*/
public function run()
{
$media_types = [
['name'=>'movie'],
['name'=>'channel'],
['name'=>'drama'],
// ['name'=>'ebook'],
// ['name'=>'shopping'],
// ['name'=>'reseller'],
// ['name'=>'broadcasting']
];
$this->command->getOutput()->progressStart(count($media_types));
App\Models\Backoffice\MediaType::query()->delete();
foreach($media_types as $media_type){
App\Models\Backoffice\MediaType::create($media_type);
$this->command->getOutput()->progressAdvance();
}
$this->command->getOutput()->progressFinish();
}
}
回答by Sevenearths
Just in case anyone else comes across a similar scenario and is looking for a solution I created the following base class:
以防万一其他人遇到类似的情况并正在寻找解决方案，我创建了以下基类：
<?php
use Illuminate\Database\Schema\Blueprint;
class TestCase extends Illuminate\Foundation\Testing\TestCase
{
protected $progress = 0;
protected function outputInfo($text)
{
$this->output('info', $text, 34);
}
protected function outputSuccess($text)
{
$this->output('success', $text, 32);
}
protected function outputWarning($text)
{
$this->output('warning', $text, 33);
}
protected function outputError($text)
{
$this->output(strtoupper('error'), $text, 31);
}
private function output($status, $text, $colour_code = 34)
{
$this->newLine();
print "3[1;" . $colour_code . "m" . str_pad($status.':', 8) . " " . $text . " 3[0m";
}
protected function progressDots()
{
if ($this->progress % 20 == 0) {
print '.';
}
}
protected function newLine()
{
echo "\n";
}
/**
* Prevents a warning on the command line
*/
public function testDefault()
{
$this->assertTrue(true);
}
}
And then used it something like this...
然后像这样使用它......
<?php
class SomethingTests extends TestCase
{
public function testSomething()
{
$array = range(0, 100);
foreach ($array as $value) {
$this->outputInfo('Testing '.$value);
$this->assertGreaterThan(101,$value,'101 is not greater then '.$value);
$this->progressDots();
}
$this->newLine();
}
}
