我不能在 Codeigniter 控制器中放置超过 2 个查询模型结果

Question

好的，伙计们.. 我的问题是我想在引导 HTML 表中的模型上创建一个循环。循环的数据在 HTML 表格中应该如下所示：

这是我的模型：

<?php class Dash_model extends CI_Model {

        public function __construct()
        {
                parent::__construct();
                // Loading second db and running query.
            $CI = &get_instance();
            //setting the second parameter to TRUE (Boolean) the function will return the database object.
            $this->db2 = $CI->load->database('db2', TRUE);
        }

        public function itemboughttotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as itembought
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE rsp_code = '11'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result(); 

        }

        public function itemsoldtotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as itemsold
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE rsp_code = '22'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result(); 
        }

        public function transsuccesstotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as TransSuccess
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE trans_code = '100'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result(); 
        }

        public function transfailedtotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as TransFail
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE trans_code = '200'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result(); 
        }

}

这不是实际的查询，但它看起来就像我的查询，当我在我的 SQL Server 上测试它时它运行良好。所以，我的查询没有问题。接下来我将查询结果传递给我的控制器，如下所示：

<?php

defined('BASEPATH') OR exit('No direct script access allowed');

class Dash_control extends CI_Controller {

    public function __construct()
       {
            parent::__construct();
            $this->load->model('dash_model');
            $this->load->library('table');
       }

    public function index()
    {
        $tmpl = array (
        'row_start'           => '<tr>',
        'row_end'             => '</tr>',
        'cell_start'          => '<td>',
        'cell_end'            => '</td>',
        );

        $this->table->set_template($tmpl); 

        $data['resultitembought'] = $this->dash_model->itemboughttotal();
        $data['resultitemsold'] = $this->dash_model->itemsoldtotal();
        $data['resulttranssuccess'] = $this->dash_model->transsuccesstotal();
        $data['resulttransfailed'] = $this->dash_model->transfailedtotal();

        $this->load->view('dashboard', $data);
    }


}

然后我像这样将 $data 传递到我的 VIEW 中：

<tbody>
<?php foreach (array_merge($resultitembought, $resultitemsold, $resulttranssuccess, $resulttransfailed) as $row)

{ ;
?>

<tr>

<td><?php echo $row->Name; ?></td>
<td><?php echo $row->itembought; ?></td>
<td><?php echo $row->itemsold; ?></td>
<td><?php echo $row->TransSuccess; ?></td>
<td><?php echo $row->TransFail; ?></td>

</tr>
<?php } ?>
</tbody>

之后，我只能循环“名称”和“购买的物品”数据。其他任何事情都只是一个完全错误。这是我得到的错误：

商品已售出错误：

A PHP Error was encountered

Severity: Notice

Message: Undefined property: stdClass::$itemsold

Filename: views/dashboard.php

Line Number: 302

Backtrace:

File: C:\xampp\htdocs\application\views\dashboard.php
Line: 302
Function: _error_handler

File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 30
Function: view

File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once

交易成功错误：

A PHP Error was encountered

Severity: Notice

Message: Undefined property: stdClass::$TransSuccess

Filename: views/dashboard.php

Line Number: 303

Backtrace:

File: C:\xampp\htdocs\application\views\dashboard.php
Line: 303
Function: _error_handler

File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 30
Function: view

File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once

交易失败错误

A PHP Error was encountered

Severity: Notice

Message: Undefined property: stdClass::$TransFail

Filename: views/dashboard.php

Line Number: 304

Backtrace:

File: C:\xampp\htdocs\application\views\dashboard.php
Line: 304
Function: _error_handler

File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 30
Function: view

File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once

我从某人那里得到了一个提示，错误是因为我未能在我的控制器中调用其他函数的 $value。

我尝试删除控制器上的 $resultitemsold、$resulttranssuccess 和 $resulttransfail，只留下名称和购买的项目，它工作正常。

这是否意味着 Codeigniter 不允许我将超过 2 个值放入索引函数的视图中？我不知道这个，请帮助我，伙计们......

感谢您的帮助...

。 .

.

---

更新

感谢您的所有回答，但我仍然收到错误消息。让我展示一下错误的样子：

所以，如您所见。它实际上循环了，但为什么我仍然得到错误。

当“itemsold”的值循环时，它会循环数组结果，但“namecust”和“itembought”会出错。

A PHP Error was encountered

Severity: Notice

Message: Undefined index: itemsold

Filename: views/dashboard.php

Line Number: 302

Backtrace:

File: C:\xampp\htdocs\application\views\dashboard.php
Line: 302
Function: _error_handler

File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 30
Function: view

File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once

Answer 1

我本来只想发表评论，但我没有足够的声誉，所以我决定把它放在这里。

错误消息一定已经出现，因为您试图 echo 一个在您的 array_merge() 之后没有分配值的数组属性。您应该确保在array_merge() 之后，生成的多维数组中每个数组的所有属性都具有分配给它们的值。您可以通过打印合并结果并检查每个键/值对的关联数组来做到这一点。

我会这样做只是为了检查：

$result = array_merge($resultitembought, $resultitemsold, $resulttranssuccess, $resulttransfailed);
print_r($result);

您还可以查看array_merge function 上的 php 手册，以更好地了解它的使用方式。

从您显示的结果来看，使用array_merge()，实际上将每个后续数组附加到第一个数组，这不是您想要实现的。使用array_merge_recursive() 将每个数组的所有具有相同键的值合并到一个数组中。只要您尝试合并的所有数组都有公共键，我希望这可以工作。 您可以打印结果以检查结果数组。像这样：

$result = array_merge_recursive($resultitembought, $resultitemsold, $resulttranssuccess, $resulttransfailed);
print_r($result);

Answer 2

尝试在模型中使用 result_array()。

<?php 

 class Dash_model extends CI_Model {

        public function __construct()
        {
                parent::__construct();
                // Loading second db and running query.
            $CI = &get_instance();

            //setting the second parameter to TRUE (Boolean) the function will return the database object.

            $this->db2 = $CI->load->database('db2', TRUE);
        }

        public function itemboughttotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as itembought
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE rsp_code = '11'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result_array(); 

        }

        public function itemsoldtotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as itemsold
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE rsp_code = '22'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result_array(); 
        }

        public function transsuccesstotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as TransSuccess
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE trans_code = '100'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result_array(); 
        }

        public function transfailedtotal()
        {
            $query = $this->db->query("
            SELECT namecust as Name, COUNT(namecust) as TransFail
            FROM db1..Table_1
            INNER JOIN db2..Table_2
            ON db2..Table_2.ID = db1.Table_1.CustID
            INNER JOIN db2..Table_3
            ON Table_3.TransID = Table_2.TransID
            WHERE trans_code = '200'
            GROUP BY namecust
            ORDER BY namecust
            ");

            return $query->result_array(); 
        }

}

并在视图中

<tbody>
<?php foreach (array_merge($resultitembought, $resultitemsold, $resulttranssuccess, $resulttransfailed) as $row)

{ 
?>

<tr>

<td><?php echo $row['Name']; ?></td>
<td><?php echo $row['itembought']; ?></td>
<td><?php echo $row['itemsold']; ?></td>
<td><?php echo $row['TransSuccess']; ?></td>
<td><?php echo $row['TransFail']; ?></td>

</tr>
<?php } ?>

</tbody>