Symfony Progress Bar正在新线条上重新创建

Question

Symfony Console Progress Bar在同一行上没有前进，而是在新行上创建

 1/2 [==============>-------------]  50%
 ! [NOTE] No changes made to Categories/CategoriesSchema              

 2/2 [============================] 100%
 2/2 [============================] 100%

i在假设下，进度条将仅在同一条线上移动，直到操作完成为止。这是我的代码

$io = new SymfonyStyle($input, $output);
$progressbar = new ProgressBar($output, count($elements));
$progressbar->start();
foreach ($elements as $element) {
     //work on element
     io->note("No changes made to ".ucfirst($name));
     $progressbar->advance();
     $io->newLine();
}
$progressbar->finish();

我做错了什么？

Answer 1

如果不自主，进度的进步将始终在新行上，除非您在写入IO之前将其清除。[sic]

如果您想在进度栏运行时输出某些内容， 首先致电Clear((。完成后，请致电Display((显示 再次进度栏。

所以要么在开始进度栏之前写信给您的IO。

$io->note('No changes made to ' . ucfirst($name));
$io->newLine();
$progressbar->start();
foreach ($elements as $element) {
    $progressbar->advance();
    sleep(1);
}
$progressbar->finish();

或在写入IO之前在进度栏上致电clear()并在完成后致电display()。

$progressbar->start();
foreach ($elements as $element) {
    if (true /* put conditional here */) {
        $progressbar->clear(); //remove progress bar from display
        $io->note('No changes made to ' . ucfirst($name));
        $io->newLine();
        $progressbar->display(); //redraw progress bar in display
    }
    $progressbar->advance(); //move up a step
    sleep(1);
}    
$progressbar->finish();