尝试使用按钮将图像上传到我在 CodeIgniter 中的数据库，但出现错误

Question

我正在尝试在 CodeIgniter (PHP) 中创建一个函数，以便用户可以将图像添加到我的数据库中，但是当我尝试上传图像时出现错误。图片确实得到了在我的上传文件夹中，但它没有上传到我的 phpmyadmin table 行。

我正在使用 phpMyAdmin

数据库名称：kadokado

Table 名称：产品

Table 我要将这些图像放在其中的行名称：product_foto

图片文件夹：上传

我的控制器文件（Product.php）：

    class Product extends CI_Controller { 


    var $data = array();

       public function __construct()
 {
  parent::__construct();
 }

}

     public function index()
 {
  $config = array (
   'upload_path' => 'upload/',
   'allowed_types' => 'jpg|jpeg|png|bmp',
   'max_size' => 0,
   'filename' => url_title($this->input->post('file'))

   );
   $this->load->library('upload', $config);

   if ($this->upload->do_upload('file')) {
    $this->db->insert('products', array(
        'product_foto' => $this->upload->product_foto
     ));
     $this->session->set_flashdata('msg', 'Success');
   }

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

}

这是我的视图文件 (product_form.php) :

<?php
echo $this->session->flashdata('msg');
echo form_open_multipart();
echo form_upload('file');
echo form_submit('upload', 'Upload');
echo form_close();
?>

这些是我遇到的错误：`

  A PHP Error was encountered

Severity: Notice

Message: Undefined property: CI_Upload::$product_foto

Filename: controllers/Product.php

Line Number: 21

Backtrace:

File: /home/ubuntu/workspace/application/controllers/Product.php
Line: 21
Function: _error_handler

File: /home/ubuntu/workspace/index.php
Line: 315
Function: require_once






A Database Error Occurred

Error Number: 1048

Column 'product_foto' cannot be null

INSERT INTO `products` (`product_foto`) VALUES (NULL)

Filename: controllers/Product.php

Line Number: 22

Answer 1

试试这个功能

public function index() {
  $data = array();

  $config = array(
      'upload_path' => 'upload',
      'allowed_types' => 'jpg|jpeg|png|bmp',
      'max_size' => 250,
      'max_width' => 1920,
      'max_heigh' => 1080,
  );
 $this->load->library('upload', $config);

 if (!$this->upload->do_upload('userfile')) {

   $error = array('error' => $this->upload->display_errors());
   // var_dump( $error); die; check errors 
 } else {
   $fileName = $this->upload->data();
   $data['product_foto'] = $fileName['file_name'];
   $this->db->insert('products', $data);
   $this->session->set_flashdata('msg', 'Success');
 }
   $this->load->view('product_form');
}

尝试使用按钮将图像上传到我在 CodeIgniter 中的数据库，但出现错误

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