PHP - 我在codeigniter中得到数组到字符串的转换错误

Question

我试图在我的系统中安装一个编辑/更新模块。但是，似乎我无法弄清楚为什么我会得到数组到字符串的转换错误。下面是模型、视图、控制器代码。

模型中的线错误

function updatebyid($userid, $data)
{
    $this->db->where('id', $userid); **i get the error in this line in my model**

控制器线路错误

$userid = $this->model_user->get_user_by_id($this->session->userdata('id'));
    if ($this->model_user->updatebyid($userid, $data)) **AND IN THIS LINE TOO IN MY CONTROLLER**

我的模型

function get_user_by_id($id)
{
    $this->db->where('id', $id);
    $query = $this->db->get('users');
    return $query->result();
}
function updatebyid($userid, $data)
{
    $this->db->where('id', $userid);
    $query = $this->db->update('users', $data);
    return $query->result();
    //return $query->row()->query;
}

我的看法

</div>
    <div class="row well" style="color: black; margin-top: 15px;">
        <h2>Edit Profile</h2>
            <?php $attributes = array("name" => "registerform");
        echo form_open("account/edituserinfo/", $attributes);?>

        <div class="form-group">

            <div class="col-sm-4">
            <label for="fname">First Name</label>
            <input class="form-control" name="fname" required type="text" value="<?php echo $fname; ?>" />
            <span class="text-danger"><?php echo form_error('fname'); ?></span>
            </div>

            <div class="col-sm-4">
            <label for="mname">Middle Name</label>
            <input class="form-control" name="mname" required placeholder="Middle Name" type="text" value="<?php echo $mname; ?>" />
            <span class="text-danger"><?php echo form_error('mname'); ?></span>
            </div>

            <div class="col-sm-4">
            <label for="lname">Last Name</label>
            <input class="form-control" name="lname" required placeholder="Last Name" type="text" value="<?php echo $lname; ?>" />
            <span class="text-danger"><?php echo form_error('lname'); ?></span>
            </div>
        </div>
<div class="input-group" style="padding-top: 15px; margin-left: 15px">
            <button name="submit" type="submit" class="btn btn-success">Update</button>
            <!--input class="form-control" name="id" placeholder="id" type="hidden" value="<?php echo $id; ?>" /-->
        </div>

        <?php echo form_close(); ?>
        <?php echo $this->session->flashdata('msg'); ?>
    </div>
    </div>

我的控制器

function index()
{
    $this->load->view('include/headnav');
    $details = $this->model_user->get_user_by_id($this->session->userdata('id'));
    $data['name'] = $details[0]->fname . " " . $details[0]->lname;
    $data['level'] = $this->session->userdata('level');
    $data['fname'] = $details[0]->fname;
    $data['mname'] = $details[0]->mname;
    $data['lname'] = $details[0]->lname;
    $data['gender'] = $details[0]->gender;
    $data['email'] = $details[0]->email;
    $data['mobileNum'] = $details[0]->mobileNum;
    $data['landlineNum'] = $details[0]->landlineNum;
    $data['homeaddress'] = $details[0]->homeaddress;
    //$data['position'] = $details[0]->position;
    //$data['institution'] = $details[0]->institution;
    //$data['institutionAddr'] = $details[0]->institutionAddr;
    //$data['institutionNum'] = $details[0]->institutionNum;
    $this->load->view('view_account', $data);
    $this->load->view('include/footernav');
}
function edituserinfo()
{
    $this->load->view('include/headnav');

    $data = array(
            'lname' => $this->input->post('lname'),
            'fname' => $this->input->post('fname'),
            'mname' => $this->input->post('mname'),
            'gender' => $this->input->post('gender'),
            'homeaddress' => $this->input->post('homeaddress'),
            'mobileNum' => $this->input->post('mobileNum'),
            //'password' => $this->input->post('password'),
            //'cPassword' => $this->input->post('cPassword'),
            //'institution' => $this->input->post('institution'),
            //'institutionAddr' => $this->input->post('institutionAddr'),
            //'institutionNum' => $this->input->post('institutionNum'),
            //'position' => $this->input->post('position'),
        );

    $userid = $this->model_user->get_user_by_id($this->session->userdata('id'));
    if ($this->model_user->updatebyid($userid, $data))
        {

            $this->session->set_flashdata('msg','<div class="alert alert-success text-center">Profile edited.</div>');
            redirect('account/edituserinfo');
        }
        else
        {
            // error
            $this->session->set_flashdata('msg','<div class="alert alert-danger text-center">Error. Check credentials.</div>');
            redirect('account/edituserinfo');
        }
}

    function updateuinfoview()
{
    $this->load->view('include/headnav');
    $details = $this->model_user->get_user_by_id($this->session->userdata('id'));
    //$data['fname'] = $details[0]->fname . " " . $details[0]->lname;
    $data['fname'] = $details[0]->fname;
    $data['lname'] = $details[0]->lname;
    $data['mname'] = $details[0]->mname;
    $data['gender'] = $details[0]->gender;
    $data['email'] = $details[0]->email;
    $data['mobileNum'] = $details[0]->mobileNum;
    $data['landlineNum'] = $details[0]->landlineNum;
    $data['homeaddress'] = $details[0]->homeaddress;
    //$data['position'] = $details[0]->position;
    //$data['institution'] = $details[0]->institution;
    //$data['institutionAddr'] = $details[0]->institutionAddr;
    //$data['institutionNum'] = $details[0]->institutionNum;
    $this->load->view('view_editprofile', $data);
    $this->load->view('include/footernav');
}

这是错误信息

遇到 PHP 错误 严重性：通知 消息：数组到字符串的转换 文件名：数据库/DB_query_builder.php 行号：669

回溯： 文件：C:\xampp\htdocs\THTF.6\application\models\model_user.php 线路：73 功能：哪里 文件：C:\xampp\htdocs\THTF.6\application\controllers\Account.php 线路：74 功能：updatebyid 文件：C:\xampp\htdocs\THTF.6\index.php 线路：315 函数：require_once

发生数据库错误 错误号：1054 'where 子句'中的未知列'Array' 更新users SET lname = 'Taz'，fname = 'Vinny'，mname = 'Paz'，gender = '男性'，homeaddress = '美国'，mobileNum = ' 4123' 在哪里 id = Array

文件名：C:/xampp/htdocs/THTF.6/system/database/DB_driver.php 行号：691

Answer 1

您收到数组到字符串转换错误，因为您的模型：

$this->model_user->get_user_by_id($this->session->userdata('id'))

返回一个对象数组。为了解决您的问题，您可以循环结果 或者如果您只需要结果的第一行，您可以这样做：

$userid = $this->model_user->get_user_by_id($this->session->userdata('id'));
if ($this->model_user->updatebyid($userid[0]->id, $data))

或者您可以像这样修改您的模型：

function get_user_by_id($id)
{
    $this->db->where('id', $id);
    $query = $this->db->get('users');
    return $query->row(); // use row if you only want the first row of the result of your query
}

控制器：

$userid = $this->model_user->get_user_by_id($this->session->userdata('id'));
if ($this->model_user->updatebyid($userid->id, $data))

**************************************************** ************************************************
或更全面的模型，因此您无需更改控制器：

function get_user_by_id($id)
{
    $this->db->where('id', $id);
    $query = $this->db->get('users');
    $result = $query->row();
    return ($result) ? $result->id : false; 
}

Answer 2

您在更新中传递的是用户详细信息数组而不是用户 ID

改变这一行

$userid = $this->model_user->get_user_by_id($this->session->userdata('id'));

到

$userid = $this->session->userdata('id');

在控制器的function edituserinfo()中

Answer 3

$userid = $this->model_user->get_user_by_id($this->session->userdata('id'));

在上述行中，您正在查询将返回数组的数据库。

改为如下设置用户 ID

$userid = $this->session->userdata('id');

你的答案