我有一个名为tenantdetails
的表,其中包含
Tenant_Id | First_Name | Last_Name | ........
我希望通过MySQL的串联功能将First_Name
和Last Name
检索为一列。所以我在controller
写下如下
$tenants = Tenant::orderBy('First_Name')->lists('CONCAT(`First_Name`," ",`Last_Name`)','Tenant_Id');
但结果出现以下错误:
SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '`," ",`First_Name`)`, `Id` from `tenantdetails` order by `F' at line 1 (SQL: select `CONCAT(`First_Name`," ",`Last_Name`)`, `Id` from `tenantdetails` order by `First_Name` asc).
如何在Laravel Eloquent中调用MySQL函数时避免反引号。我只对Eloquent感兴趣(不是在流利的查询中)。提前谢谢。
更新
感谢@Andreyco帮助我。我们可以使用Laravel模型以更优雅的方式实现这一目标,如下所示:
在我们的model
:
public function getTenantFullNameAttribute()
{
return $this->attributes['First_Name'] .' '. $this->attributes['Last_Name'];
}
和我们的controller
:
$tenants = Tenant::orderBy('First_Name')->get();
$tenants = $tenants->lists('TenantFullName', 'Tenant_Id');
答案 0 :(得分:67)
Tenant::select('Tenant_Id', DB::raw('CONCAT(First_Name, " ", Last_Name) AS full_name'))
->orderBy('First_Name')
->lists('full_name', 'Tenant_Id');
答案 1 :(得分:7)
一种简单的方法是使用selectRaw
。它由Tailor在Jan 30, 2014
Tenant::selectRaw('CONCAT(First_Name, " ", Last_Name) as TenantFullName, id')->orderBy('First_Name')->lists('TenantFullName', 'id'))
答案 2 :(得分:3)
lists()方法用于从所选结果中选择列。因此,首先联系名字和姓氏,并在select语句
中为此列添加新别名 $tenants = Tenant::orderBy('First_Name')->select(DB::row('CONCAT(`First_Name`," ",`Last_Name`) as name'),'Tenant_Id')->lists('name', 'id');
然后你可以在lists()方法
中选择这个别名答案 3 :(得分:2)
您应该使用 DB :: raw()来连接字段
Tenant::select(
'Tenant_Id',
DB::raw('CONCAT(First_Name,"-",Last_Name) as full_name')
)
->orderBy('First_Name')
->lists('full_name', 'Tenant_Id');
答案 4 :(得分:1)
您也可以使用查询生成器来执行此操作 喜欢:
DB::table('Tenant')
->selectRaw('CONCAT(First_Name, " - ", Last_Name) as fullName, id')
->get();
希望对您有所帮助:)