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# Trait
## 1. HasClicks
> 缓存的浏览计数器
```php
use App\Traits\HasClicks;
class Test extends Model
{
use HasClicks;
protected string $clicks_filed = 'clicks';
}
$test = Test::first();
// 增加点击数量
$test->incrementClicks(1);
// 获取点击量
$test->clicks;
```
## 2. HasCovers
> 封面图与轮播图的展示扩展完整url
```php
use App\Traits\HasCovers;
class Test extends Model {
use HasCovers;
protected string $cover_field = 'cover';
protected string $pictures_field = 'pictures';
}
$test = Test::first();
$test->cover_url;
$test->pictures_url;
```
## 3. HasStatus
> 基础状态的显示与作用域查询
```php
use App\Traits\HasStatus;
class Test extends Model {
use HasStatus;
protected string $status_field = 'status';
protected array $status_map = [
1 => '正常',
0 => '禁用'
];
}
// 状态为 1 的
$test = Test::shown()->first();
// 状态为 0 的
$test = Test::hidden()->first();
// 查询特定状态
$test = Test::ofStatus(3)->first();
// 状态的文本显示
$test->status_text;
```
## 4. Macroable
> 这个主要用于,对模型的一些外部扩展使用、
>
> 因为模型无法动态的注入trait有些时候在模块外部需要写入关联模型等时候可以使用。
```php
use App\Tratis\Macroable;
class Test extends Model {
use Macroable;
}
// 对模型注入一个 address 的一对多关联
Test::macro('address', function () {
return $this->hasMany(Address::class);
});
```
## 5. OrderByIdDesc
> 直接引入模型后查询到的数据会默认以ID 倒序排列,
>
> 暂时没有找到怎么获取主键的方法,待升级
## 6. OrderByOrderAsc
> 已特定的 order 字段,按照升序排序
## 7. WithPosition
> 位运算来解决的多点定位,模型中需要有 position 字段
```php
use App\Traits\WithPosition;
class Test extends Model
{
use WithPosition;
protected array $position_map = [
1 => 'A',
2 => 'B',
4 => 'C',
8 => 'D',
];
}
$test = Test::ofPosition(3)->first();
```