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[TOC]

tags 標簽

| 鍵名 | 類型 |
| --- | --- |
| id | PK |
| keywords | varchar(200) |
| taggables |  多對多關聯 |

taggables 多對多關聯

| 鍵名 | 類型 |
| --- | --- |
| id	 | PK |
| taggable_type | varchar(200) |
| taggable_id | 	integer |
| tag_id	 | integer FK |

# 實現
Post.php

~~~
function tags() {
    return $this->morphToMany('App\\Tag', 'taggable');
}
~~~

Tag.php
~~~
function posts()
{
    return $this->morphedByMany('App\Post', 'taggable');
}
~~~
# 操作
`$post = Post::find(1);`
綁定Tag：['iOS', 'iPhone']

~~~
$id_list = [];
foreach (['iOS', 'iPhone'] as $keywords)
    $id_list[] = Tag::firstOrCreate(['keywords' => $keywords])->getKey();

$post->sync($id_list);
~~~
用法與多對多相同
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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