我需要将输入类型文件值插入mysql数据库。我在表单验证后发送文件。但是在插入文件时，该值显示为NULL，并显示错误号：1048。
我需要将图像名称和其他字段一起插入数据库。但是输入类型File的验证不起作用
我的代码是
控制器
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Book extends CI_Controller {
public function index()
{
$this->load->view('admin/add_book');
}
public function addbook()
{
$this->load->view('admin/add_book');
}
public function form_validation()
{
$this->load->library('form_validation');
$this->form_validation->set_rules("book_name","Book Name",'required');
$this->form_validation->set_rules("book_author","Author",'required');
$this->form_validation->set_rules("book_pub","Publications",'required');
$this->form_validation->set_rules("book_genre","Genre",'required|alpha');
$this->form_validation->set_rules("pub_year","Year",'required');
if (empty($_FILES['book_cover']['name']))
{
$this->form_validation->set_rules("book_cover","Document",'required');
}
if($this->form_validation->run())
{
$this->load->model("book_model");
$data=array(
"book_name"=>$this->input->post("book_name"),
"book_author"=>$this->input->post("book_author"),
"book_publication"=>$this->input->post("book_pub"),
"book_genre"=>$this->input->post("book_genre"),
"book_year"=>$this->input->post("pub_year"),
"book_cover"=>$this->input->post("book_cover")
);
$this->book_model->insert_data($data);
redirect(base_url()."admin/book/inserted");
echo "Success";
}
else
{
$this->index();
//echo "Fail";
}
}
public function inserted()
{
$this->addbook();
}
}
?>
模型
<?php
class Book_model extends CI_Model
{
function insert_data($data)
{
$this->db->insert("books",$data);
}
}
?>
视图
<form action="<?php echo base_url()?>admin/book/form_validation" method="post" class="form-horizontal form-bordered" enctype="multipart/form-data" >
<?php
if($this->uri->segment(3) == "inserted")
{
echo '<p class="text-success" style="text-align:center;">Data Inserted</p>';
}
?>
<div class="form-group">
<label class="col-md-3 control-label" for="example-hf-email">Book Name</label>
<div class="col-md-9">
<input type="text" name="book_name" class="form-control" placeholder="Enter Name..">
<span class="text-danger"><?php echo form_error("book_name");?></span>
</div>
</div>
<div class="form-group">
<label class="col-md-3 control-label" for="example-hf-password">Author Name</label>
<div class="col-md-9">
<input type="text" name="book_author" class="form-control" placeholder="Enter Author..">
<span class="text-danger"><?php echo form_error("book_author");?></span>
</div>
</div>
<div class="form-group">
<label class="col-md-3 control-label" for="example-hf-password">Publications</label>
<div class="col-md-9">
<input type="text" name="book_pub" class="form-control" placeholder="Enter Publication..">
<span class="text-danger"><?php echo form_error("book_pub");?></span>
</div>
</div>
<div class="form-group">
<label class="col-md-3 control-label" for="example-hf-password">Genre</label>
<div class="col-md-9">
<input type="text" name="book_genre" class="form-control" placeholder="Enter Genre..">
<span class="text-danger"><?php echo form_error("book_genre");?></span>
</div>
</div>
<div class="form-group">
<label class="col-md-3 control-label" for="example-hf-password">Year</label>
<div class="col-md-9">
<input type="text" name="pub_year" class="form-control" placeholder="Enter Salary..">
<span class="text-danger"><?php echo form_error("pub_year");?></span>
</div>
</div>
<div class="form-group">
<label class="col-md-3 control-label" for="example-hf-password">Book Cover Image</label>
<div class="col-md-9">
<input type="file" name="book_cover" class="form-control" placeholder="upload book cover..">
<span class="text-danger"><?php echo form_error("book_cover");?></span>
</div>
</div>
<div class="form-group form-actions">
<div class="col-md-9 col-md-offset-3">
<button type="submit" name="save" class="btn btn-sm btn-primary"><i class="fa fa-user"></i> Save</button>
<button type="reset" class="btn btn-sm btn-warning"><i class="fa fa-repeat"></i> Reset</button>
</div>
</div>
</form>
我不太了解这个问题。 预先感谢
答案 0 :(得分：0)
您不能只将相同的名称直接插入数据库中，而必须将文件类型存储到资产中，然后获取文件名并将其存储到数据库中。 尝试查看文档使用文件上传库https://www.codeigniter.com/userguide3/libraries/file_uploading.html
public function do_upload()
{
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = 100;
$config['max_width'] = 1024;
$config['max_height'] = 768;
$this->load->library('upload', $config);
if ( ! $this->upload->do_upload('userfile'))
{
$error = array('error' => $this->upload->display_errors());
$this->load->view('upload_form', $error);
}
else
{
$data = array('upload_data' => $this->upload->data());
$file_name=$data['upload_data'][file_name];
}
}
现在您可以将文件名存储到db中。