在代码点火器中获得唯一的段塞 - get unique slug in codeigniter

我想为我的文章获得唯一的slug。我正在使用codeigniter。我想知道，如果有两篇文章的标题相同，就像codeignier在上传文件filename(:num)时所做的那样，是否有像sample-title-1和sample-title-2这样的东西。我想不出办法。我不是代码点火器的专家。我正在学习。

我准备了一个函数，当传递一个字符串$str时，它会检查slug是否存在，如果存在，它会将该文章的ID添加到slug的末尾并返回，如果不存在，它将返回slug。

它运行良好，可以达到独特鼻涕虫的目的。但我想要的是sample-title-1和sample-title-2。有什么办法吗？

$data['slug'] = $this->get_slug($data['title']);

public function get_slug ($str)
    {
        $slug = url_title($str, 'dash', true);
        // Do NOT validate if slug already exists
        // UNLESS it's the slug for the current page
        $id = $this->uri->segment(4);
        $this->db->where('slug', $slug);
        ! $id || $this->db->where('id !=', $id);
        $category = $this->category_m->get();
        if (count($category)) {
            return $slug.$id;
        }
        return $slug;
    }

易于使用，非常有助于创建独特的段塞。查看CI段塞库

阅读其文档以实现它。

我以前做的是制作slug db field UNIQUE。

然后使用CI助手Url Helper和Text Helper 轻松完成所有操作

    $last_id_inserted = //get from db the last post's ID;
    $post_title = "My slug would be";
    $slug =  mb_strtolower(url_title(convert_accented_characters($post_title))).'-'.$last_id_inserted;
    echo $slug;
    //outputting my-slug-would-be-123

//insert the new post with slug

因此，ID将是唯一的，也是鼻涕虫。

我想你需要这样的东西：

//Database loaded
//Text helper loaded
function post_uniq_slug($slug, $separator='-', $increment_number_at_end=FALSE) {    
    //check if the last char is a number
    //that could break this script if we don't handle it
    $last_char_is_number = is_numeric($slug[strlen($slug)-1]);
    //add a point to this slug if needed to prevent number collision..
    $slug = $slug. ($last_char_is_number && $increment_number_at_end? '.':'');
    //if slug exists already, increment it
    $i=0;
    $limit = 20; //for security reason
    while( get_instance()->db->where('slug', $slug)->count_all_results('posts') != 0) {
        //increment the slug
        $slug = increment_string($slug, $separator);
        if($i > $limit) {
            //break;
            return FALSE;
        }
        $i++;
    }
    //so now we have unique slug
    //remove the dot create because number collision
    if($last_char_is_number && $increment_number_at_end) $slug = str_replace('.','', $slug);
    return $slug;
}

示例：

post_uniq_slug('sample'); //"sample" exists
//sample-1
post_uniq_slug('sample-2013'); //"sample-2013" exists
//sample-2013-2
post_uniq_slug('sample-2013', '-', TRUE); //increment "sample-2013"
//sample-2014

*未测试

public function create_slug($name)
{
 $table='tradeshow';    //Write table name
 $field='slug';         //Write field name
 $slug = $name;  //Write title for slug
 $slug = url_title($name);
 $key=NULL;
 $value=NULL;       
 $i = 0;
 $params = array ();
 $params[$field] = $slug;
if($key)$params["$key !="] = $value;
while ($this->db->from($table)->where($params)->get()->num_rows())
    {  
        if (!preg_match ('/-{1}[0-9]+$/', $slug ))
        $slug .= '-' . ++$i;
        else
        $slug = preg_replace ('/[0-9]+$/', ++$i, $slug );
        $params [$field] = $slug;
    }  
    return $alias=$slug;}