使用主键和外键检查唯一性的 Laravel 表单验证规则

Question

我知道如何使用单个 id 来检查唯一性，如下所示，

$addrules = array(
        'GradeName' =>  array('required','regex:/^./','unique:class,GradeName,'.$id.',AutoID'),   
                             );

然后我想用检查唯一的两个id（主键和外键）

这是我的代码：

$update = array(
        'GradeName' =>  array('required','regex:/^./','unique:class,GradeName,'.$schoolid.',schoolid,'.$data.',AutoID'),   
                             );

但我有以下错误：

SQLSTATE[42S22]: Column not found: 1054 Unknown column '20' in 'where clause' (SQL: select count(*) as aggregate from `class` where `GradeName` = g1 and `schoolid` <> 3 and `20` = AutoID)

我该如何解决这个问题？

Answer 1

你传递了错误的参数，后面跟着 doc

unique:table,column,except,idColumn

You may also specify more conditions that will be added as "where" clauses to the query:

'email' => 'unique:users,email_address,NULL,id,account_id,1'
In the rule above, only rows with an account_id of 1 would be included in the unique check.

因此，您可以按自己的方式传递外键。

Answer 2

我已使用以下代码修复此错误

$update = array(
        'GradeName' =>  array('required','regex:/^./','unique:class,GradeName,'.$data.',AutoID,schoolid,'.$schoolid),   
                             );