Laravel Slug Exist

Question

I want to create slug for blog categories. I do it like this;

Str::slug($request->title)

But I have to check if slug exist. If exist, I want to do like this;

// For example title is test. Slug must be test.
// But if slug exist I want to do it test1
if(count(blog_tags::where('slug',$slug)->get()) > 0){
     $slug = $slug . '1';
}
// But test1 too can be exist. So I have to test it.

If I test it again and again, system will be slow. What should I do?

Answer 1

Add the following function in your controller class to check ending number in slug

protected function countEndingDigits($string)
{
    $tailing_number_digits =  0;
    $i = 0;
    $from_end = -1;
    while ($i < strlen($string)) :
      if (is_numeric(substr($string, $from_end - $i, 1))) :
        $tailing_number_digits++;
      else :
        // End our while if we don't find a number anymore
        break;
      endif;
      $i++;
    endwhile;
    return $tailing_number_digits;
}

Add the following function in your controller class to check slug already exists or not

protected function checkSlug($slug) {

if(blog_tags::where('slug',$slug)->count() > 0){
 $numIn = $this->countEndingDigits($slug);
 if ($numInUN > 0) {
          $base_portion = substr($slug, 0, -$numInUN);
          $digits_portion = abs(substr($slug, -$numInUN));
  } else {
          $base_portion = $slug . "-";
          $digits_portion = 0;
  }

  $slug = $base_portion . intval($digits_portion + 1);
  $slug = $this->checkSlug($slug)
}

return $slug
}

Now you will get a unique incremental slug

$slug = $this->checkSlug(Str::slug(string));