如何使用Laravel 4.1在字符串中查找#hashtags? [英] How to find #hashtags in strings using Laravel 4.1?

问题描述

我目前正在尝试通过Input字符串进行过滤，以查找用户希望与他的照片一起显示的单个主题标签.但是，我当前在数据库中得到的插入不正确.

I am currently trying to filter through an Input string to find the single hashtags that a user wants to be displayed with his photo. However, I am currently getting inserts in my database that are not correct.

最好的情况是将每个标签标签保存在带有照片ID的新数据库行中.但是，我真的不知道该怎么做.

The best case scenario would be that every single hashtag is saved in a new database row with the photo id. However, I do not really know what to do to accomplish that.

$hashtag = new Hashtag;

     $hashtag->photo_id = $photo->id;

        $hashtag_string = Input::get('hashtags');

            $hashtag_string = Str::contains($hashtag_string, '#')

        $hashtag->hashtag = $hashtag_string;


$hashtag->save();

我在该备忘单中找到了一些功能( http://cheats.jesse-obrien.ca )，但我无法使它们正常工作.

I found some functions in this cheat sheet (http://cheats.jesse-obrien.ca) but I do not get them to work properly.

推荐答案

尝试一下:

$str = $hashtag_string;

       preg_match_all('/#(\w+)/', $str, $matches);


       foreach ($matches[1] as $hashtag_name) {

       $hashtag =   Hashtag::firstOrCreate(array('hashtag' => $hashtag_name));

                                    }

然后，您可以在此foreach循环中，将这些标签与帖子(或您的照片)或某物相连.

You could then, in this foreach loop, connect those hashtags to a post (or in your case a photo) or sth.

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