Question

我是codeigniter的新手，正在尝试弄清楚如何将数据输入到与另一个相关表（客户端）中的另一行数据相关的表（电话）中。现在，我认为我需要做的是获取最近创建的客户端行ID，并将其指定为电话表行的外键字段。所以我的问题是我如何得到它，以便我可以在屏幕上回显它，以便我可以确定它可以用于其他目的。我试图将client_id的值存储到变量$ client_id中。但我收到以下php错误：

遇到PHP错误

严重性：注意

消息：未定义的变量：client_id

文件名：views / form_success.php

行号：1

为了参考目的，我包括我的代码而不更改名称，因为这不是商业项目，但应该模拟一个。 MODEL

<?php

class insert_client extends CI_Model {
function __construct() {
    parent::__construct();
}

function form_insert($client_data) {
    // Insert Data into client table
    $this->db->insert('client', $client_data);
}

function get_id() {
    // Get id of most recently created record in client table.
    $this->db->select_max('client_id');
    $data = $this->db->get('client');
    return $data;
}
}

控制器的一部分（注意模型已在代码中的函数之前加载）

if ($this->form_validation->run() == FALSE) {
        $this->load->view('form_start');
        $this->load->view('client_form');
        $this->load->view('submit');
    } else {

        //CLIENT DATA
        $client_data = array (
            'first_name' => $this->input->post('first_name'),
            'last_name' => $this->input->post('last_name'),
            'address' => $this->input->post('address'),
            'apt_or_suite_number' => $this->input->post('apt_or_suite_number'),
            'zip_code' => $this->input->post('zip_code'),
            'state' => $this->input->post('state'),
            'email' => $this->input->post('email'),
        );          

        // Get ID
        $client_id = $this->insert_client->get_id();

        // Transfer to models and store in database
        $this->insert_client->form_insert($client_data);

        // Load Success View
        $this->load->view('form_success', $client_id);
    }

AND SUCCESS MESSAGE（form_success）

<div class="alert alert-success">Client created! User ID = <?php echo ($client_id); ?></div>

Answer 1

我认为获取数据有问题：

function get_id() {
    // Get id of most recently created record in client table.
    $this->db->select_max('client_id');
    $query = $this->db->get('client');
    $data = $query->result();

/* or
    foreach ($query->result() as $row)
    {
        echo $row->title;
    }
*/

    return $data;
}

Answer 2

您可以使用$this->db->insert_id()功能。

型号：

function form_insert($client_data) {
    // Insert Data into client table
    $this->db->trans_start();
    $this->db->insert('client', $client_data);
    $insert_id = $this->db->insert_id();
    $this->db->trans_complete();
    return $insert_id;
}

控制器：

if ($this->form_validation->run() == FALSE) {
        $this->load->view('form_start');
        $this->load->view('client_form');
        $this->load->view('submit');
    } else {

        //CLIENT DATA
        $client_data = array (
            'first_name' => $this->input->post('first_name'),
            'last_name' => $this->input->post('last_name'),
            'address' => $this->input->post('address'),
            'apt_or_suite_number' => $this->input->post('apt_or_suite_number'),
            'zip_code' => $this->input->post('zip_code'),
            'state' => $this->input->post('state'),
            'email' => $this->input->post('email'),
        );          

        // Transfer to models and store in database and get last inserted id
        $client_id = $this->insert_client->form_insert($client_data);

        // Load Success View
        $this->load->view('form_success', $client_id);
    }

CodeIgniter从数据库获取最近输入的行并在控制器中使用它

2 个答案: