在 Laravel 6 中查询列表(转换为数组)，在遍历过程中需要赋值单条记录的额外字段，还需要使用单个对象，进而导致 N + 1 问题的处理

$wpThemes = Theme::select('id', 'custom_name', 'name', 'is_original', 'is_default', 'created_at_gmt', 'updated_at_gmt', 'original_theme_name')
            ->orderBy('updated_at_gmt', 'desc')
            ->get()->toArray();

foreach ($wpThemes as $wpTheme) {
	$wpThemeObject = $this->get($wpTheme['id']);
	$wpTheme['updatable'] = $this->isActionable($saasThemeConfig, $wpThemeObject, 'updatable');
}

$wpThemes = Theme::select('id', 'custom_name', 'name', 'is_original', 'is_default', 'created_at_gmt', 'updated_at_gmt', 'original_theme_name')
            ->orderBy('updated_at_gmt', 'desc')
            ->get();

foreach ($wpThemes as $wpTheme) {
	$wpThemeArray = $wpTheme->toArray();
	$wpThemeObject = $this->get($wpThemeArray['id']);
	$wpThemeArray['updatable'] = $this->isActionable($saasThemeConfig, $wpTheme, 'updatable');
}