laravel-admin文件上传及处理

• file表单通过move指定上传目录
• saving保存回调设置文件名及文件校验参数
• saved保存回调实现后期处理，如文件重命名等

$form->hidden('file_name', '更新文件名');
$form->file('file_path', '更新文件')->move(function ($file_path) use ($form) {
    if (!empty($form->app_id)) {
        Log::info('Move App ID: '. $form->app_id);
        $app = AndroidApp::where('id', $form->app_id)->get(['name'])->first();
        Session::put('app', $app);
    } else {
        $app = Session::get('app');
    }
    return 'files/' . $app->name;
});

$form->hidden('size', 'Size');
$form->hidden('md5', 'Md5');
$form->hidden('sha1', 'Sha1');

$form->saving(function ($form) {
    $file = $form->file_path;
    if ($file != null && $file->isValid()) {
        Log::info('App Id: ' . $form->app_id);
        Log::info('Temp File: ' . $file);
        Log::info('Original Name: ' . $file->getClientOriginalName());
        $file_name = $file->getClientOriginalName();

        $form->file_name = $file_name;
        $form->size = filesize($file);
        $form->md5 = md5_file($file);
        $form->sha1 = sha1_file($file);
    }
});

$form->saved(function ($form) {
    $app_version = $form->model();

    //$app = AndroidApp::where('id', $app_version->app_id)->get(['name'])->first();
    $app = $app_version->app;
    Session::put('app', $app);

    if ($form->file_path != null && $form->file_path->isValid()) {
        $extension = substr($form->file_name, strrpos($form->file_name, '.') + 1);
        if ($extension === 'apk' || $extension === 'patch' || $extension === 'tpatch') {
            $extension = 'zip';
        }
        $file_name = substr($form->file_name, 0, strrpos($form->file_name, '.') + 1) . $extension;

        $old_file = public_path('upload/') . $app_version->file_path;
        $new_file = public_path('upload/files/') . $app->name . '/' . $file_name;
        Log::info('Old File: ' . $old_file);
        Log::info('New File: ' . $new_file);

        //上传同名文件会导致md5自动命名，后期重命名回来
        if (file_exists($old_file)) {
            if (rename($old_file, $new_file)) {
                Log::info('Rename Success');
                $app_version['file_path'] = 'files/' . $app->name . '/' . $file_name;
                $app_version->saveOrFail();
            } else {
                Log::info('Rename Failure');
            }
        }
    }
});