Codeigniter 4 错误“您必须设置要与查询一起使用的数据库表”出现/不添加数据库查询

Question

因此，我正在遍历一个数组，其中包含三个嵌套的 arrays 以存储在数据库中，每个集群都包含基本信息（部门、名称、代码）和一个计时数组（in_timings/out_timings/status）。

$数据数组

Array
(
    [0] => Array
        (
            [dept] => psychology
            [month] => March-2022
            [emp_code] => 0001
            [name] => John Doe
            [in_timings] => Array
                (
                    [0] => 08:09
                    [1] => 08:09
                    [2] => 08:07
                    [3] => 08:08
                    [4] => 08:09
                    [5] => --:--
                    [6] => 08:08
                    [7] => 08:08
                    [8] => 08:09
                    [9] => 08:09
                    [10] => 08:08
                    [11] => 08:09
                    [12] => --:--
                    [13] => 08:08
                    [14] => 08:09
                    [15] => 08:09
                    [16] => --:--
                    [17] => --:--
                    [18] => --:--
                    [19] => --:--
                    [20] => 18:09
                    [21] => 08:09
                    [22] => 08:09
                    [23] => 08:08
                    [24] => 08:05
                    [25] => 08:09
                    [26] => --:--
                    [27] => 08:08
                    [28] => 08:09
                    [29] => 08:09
                    [30] => 08:09
                )

            [out_timings] => Array
                (
                    [0] => 18:04
                    [1] => 18:53
                    [2] => 18:25
                    [3] => 18:23
                    [4] => 18:51
                    [5] => --:--
                    [6] => 18:38
                    [7] => 18:09
                    [8] => 18:01
                    [9] => 18:23
                    [10] => 18:08
                    [11] => 18:02
                    [12] => --:--
                    [13] => 18:33
                    [14] => 18:02
                    [15] => 18:12
                    [16] => --:--
                    [17] => --:--
                    [18] => --:--
                    [19] => --:--
                    [20] => --:--
                    [21] => 18:03
                    [22] => 18:00
                    [23] => 18:08
                    [24] => 18:00
                    [25] => --:--
                    [26] => --:--
                    [27] => 19:16
                    [28] => 18:10
                    [29] => 18:10
                    [30] => 18:01
                )

            [status] => Array
                (
                    [0] => P
                    [1] => P
                    [2] => P
                    [3] => P
                    [4] => P
                    [5] => A
                    [6] => P
                    [7] => P
                    [8] => P
                    [9] => P
                    [10] => P
                    [11] => P
                    [12] => A
                    [13] => P
                    [14] => P
                    [15] => P
                    [16] => A
                    [17] => A
                    [18] => A
                    [19] => A
                    [20] => P
                    [21] => P
                    [22] => P
                    [23] => P
                    [24] => P
                    [25] => P
                    [26] => A
                    [27] => P
                    [28] => P
                    [29] => P
                    [30] => P
                )
        )
       [1] = Array
       (
          # similar more data of other people
          ...
)

现在我需要为 $data 数组的每个人创建三个不同的元素 arrays ，其中包含：

dept, name, emp_code, in_timings/out_timings/status (在主数组中直接索引为 date_1, date_2, date_3,...., date_31)

因此，我在 model 内部创建了 function ，其中数据参数为 $data 数组。

public function storeRows($data)
    {   
        $batch = array();
        $each_row = array();
        $count = 0;

        foreach ($data as $person) {

            $arr_count=0;
                // it was working fine till I added below loop for each timing array
            for ($arr_count=0; $arr_count < 3; $arr_count++) { 

                $each_row = [];
                $each_row['emp_code'] = $person['emp_code'];
                $each_row['emp_name'] = $person['name'];
                $each_row['entry_type'] = $arr_count;
                $each_row['month'] = $person['month'];

                // setting the timing array
                $arr = [];
                if($arr_count === 0)
                    $arr = $person['in_timings'];
                elseif($arr_count === 1)
                    $arr = $person['out_timings'];
                elseif($arr_count === 2)
                    $arr = $person['status'];

                // below loop will store as date_1, date_2,...,date_31
                foreach ($arr as $key => $value) {
                    $t = 'date_'.($key+1);
                    $each_row[$t] = $value;
                }

                $batch[] = $each_row;
                $count++;
            }
        }
        // echo '<pre>';print_r($batch);exit;
        // even the batch array is not getting printed showing error (added below)

        $builder = $this->db->table($this->DBPrefix . 'attendance');
        $builder->insertBatch($batch);
        if ($this->db->affectedRows() == $count) {
        return True;
        } else {
          return False;
        }
        
}

我在日志中遇到的错误是

CRITICAL - 2022-08-15 18:02:37 --> You must set the database table to be used with your query.

数据库/查询实际上没有抛出任何错误，因为：

1. 当不与嵌套的 for() 循环一起使用时，插入工作正常
2. 即使我评论数据库插入，并且只打印 $batch 数组也会引发相同的错误，在为单独的时序集群添加新的 for 循环之前情况并非如此

编辑

分辨率（在 model 函数中）

错误是因为嵌套的 foreach

if(is_array($arr)) {  # this line helped
    foreach ($arr as $key => $value) {
        $t = 'date_'.($key+1);
        $each_row[$t] = htmlentities($value);
    }
}

我不知道为什么，但经过一番挖掘后我发现了一个错误

为 foreach() 提供的参数无效

这个问题有帮助

因此，当问题完全不同时，我得到了这个错误