如何正确分组 Laravel Query Builder 中的 where 子句

How to group where clauses in Laravel Query Builder correctly

我 运行 使用下面的 search() 函数进行以下查询 - 问题是我需要对 where 子句进行分组 - 我做错了什么?

select `standings`.*, `users`.`name` as `user` from `standings` 
left join `users` on `standings`.`user_id` = `users`.`id` 
where `users`.`name` like '%bob%' or `users`.`email` like '%bob%' 
and `standings`.`tenant_id` = '1'

在我的 Standings 模型中,我有以下执行 WHERE 子句的 search()

public static function search($query)
{
  return empty($query) ? static::query()
         : static::where('users.name', 'like', '%'.$query.'%')
         ->orWhere('users.email', 'like', '%'.$query.'%');
}
public function render()
{
    $query = Standing::search($this->search)
        ->select('standings.*', 'users.name AS user')
        ->leftJoin('users', 'standings.user_id', '=', 'users.id')
        ->orderBy('points', 'desc')
        ->orderBy('goals_difference', 'desc')
        ->orderBy('goals_for', 'desc');
    if($this->super && $this->selectedTenant) {
        $query->where('standings.tenant_id', $this->selectedTenant);
    }

    return view('livewire.show-standings', [
        'standings' => $query->paginate($this->perPage)
    ]);

}

查询有效,但它没有在 users.name 和 users.email 字段上正确分组 WHERE 子句 - 我如何更改此 search() 函数以便 WHERE 查询将它们分组为这个

where (`users`.`name` like '%bob%' or `users`.`email` like '%bob%')`

您需要将 where 子句分组到一个 wrapping where 子句中。试试这个

public static function search($query)
{
  return empty($query) 
    ? static::query()
    : static::where(function($query){
        $query->where('users.name', 'like', '%'.$query.'%')
            ->orWhere('users.email', 'like', '%'.$query.'%');
      });
}

Thanks that for some reason even though looks correct gives me the following error - Object of class Illuminate\Database\Eloquent\Builder could not be converted to string NB I am using Laravel with Livewire (not sure if that should make any difference)

$query->where('users.name', 'like', '%'.$query.'%')->orWhere('users.email', 'like', '%'.$query.'%'); 给出了错误,因为在尝试比较 $query 时被视为字符串,因此错误

您可以将搜索定义为模型上的查询范围

//Assuming a relation Standing belongsTo User
//Query constraint to get all Standing records where
//related User record's name or email are like searchTerm
public function scopeSearch($query, string $searchTerm)
{
    return $query->whereHas('user', function($query) use($searchTerm){
        $query->where('name', 'like', "%{$searchTerm)%")
            ->orWhere('email', 'like', "%{$searchTerm}%");
    });
}

Laravel 文档:https://laravel.com/docs/8.x/eloquent#local-scopes

通过在 Standing 模型上定义上述搜索范围,您可以将渲染功能设置为

public function render()
{
    $query = Standing::with('user:id,name')
        ->search($this->search)
        ->orderBy('points', 'desc')
        ->orderBy('goals_difference', 'desc')
        ->orderBy('goals_for', 'desc');
    if($this->super && $this->selectedTenant) {
        $query->where('tenant_id', $this->selectedTenant);
    }

    return view('livewire.show-standings', [
        'standings' => $query->paginate($this->perPage)
    ]);

}