我已经有一些关于这个问题的问题，但我最终没有取得多大进展。我正在尝试将图像上传到页面上，文件名显示在用户名旁边的数据库中，但它一直显示为零。为什么会这样？图像字段是varchar，因此它将保存文件名。但是因为我想让我的getProfileImage函数将图像显示回屏幕，它应该是一个blob吗？
这是我的控制器：
function __construct()
{
// Call the parent construct
parent::__construct();
$this->load->model("profiles");
$this->load->model("profileimages");
$this->load->helper(array('form', 'url'));
}
function upload()
{
$config = array(
'allowed_types' =>'gif|jpg|jpeg|png',
'upload_path' =>'./web-project-jb/assets/puploads/',
'max_size' => 10000,
'max_width' => 1024,
'max_height' => 768
);
$this->load->library('upload', $config);
$img = $this->session->userdata('img');
$username = $this->session->userdata('username');
//fail show upload form
if (! $this->upload->do_upload())
{
$error = array('error'=>$this->upload->display_errors());
$username = $this->session->userdata('username');
$viewData['username'] = $username;
$viewData['profileText'] = $this->profiles->getProfileText($username);
$this->load->view('shared/header');
$this->load->view('homeprofile/homeprofiletitle', $viewData);
$this->load->view('shared/nav');
$this->load->view('homeprofile/homeprofileview', $error, $viewData, array('error' => ' ' ));
$this->load->view('shared/footer');
//redirect('homeprofile/index');
}
else
{
//successful upload so save to database, which it doesn't
$file_data = $this->upload->data();
$data['img'] = '/web-project-jb/assets/puploads/'.$file_data['file_name'];
// you may want to delete the image from the server after saving it to db
// check to make sure $data['full_path'] is a valid path
// get upload_sucess.php from link above
//$image = chunk_split( base64_encode( file_get_contents( $data['file_name'] ) ) );
$this->username = $this->session->userdata('username');
$this->profileimages->putProfileImage($username, $img);
$data['profileimages'] = $this->profileimages->getProfileImage($username, $img);
$viewData['username'] = $username;
$viewData['profileText'] = $this->profiles->getProfileText($username);
$username = $this->session->userdata('username');
$this->load->view('shared/header');
$this->load->view('homeprofile/homeprofiletitle', $viewData);
$this->load->view('shared/nav');
$this->load->view('homeprofile/homeprofileview', $data, $viewData);
$this->load->view('shared/footer');
//redirect('homeprofile/index');
}
}
function index()
{
$username = $this->session->userdata('username');
$img = $this->session->userdata('img');
$data['profileimages'] = $this->profileimages->getProfileImage($username, $img);
$viewData['username'] = $username;
$viewData['profileText'] = $this->profiles->getProfileText($username);
$this->load->view('shared/header');
$this->load->view('homeprofile/homeprofiletitle', $viewData);
$this->load->view('shared/nav');
//$this->load->view('homeprofile/upload_form', $data);
$this->load->view('homeprofile/homeprofileview', $data, $viewData, array('error' => ' ' ) );
$this->load->view('shared/footer');
}
}
我的模特：
var $proimage_path;
function ProfileImages()
{
parent::__construct();
$this->proimage_path = 'web-project-jb/assets/puploads';
}
function exists($username)
{
$this->db->select('*')->from("profileimages")->where('user', $username);
$query = $this->db->get();
if ($query->num_rows() > 0)
{
return true;
/*
echo "user $user exists!";
$row = $query->row();
echo " and his profileimage is $row->profileimage";
*/
}
else
{
return false;
//echo "no such user as $user!";
}
}
function putProfileImage($username, $img)
{
$record = array('user' => $username, 'profileimage' => $img);
if ($this->exists($username))
{
$this->db->where('user', $username)->update('profileimages', $record);
}
else
{
$this->db->where('user', $username)->insert('profileimages', $record);
}
}
function getProfileImage($img)
{
$this->db->select('*')->from('profileimages')->where('profileimage', $img);
$query = $this->db->get();
if ($query->num_rows() > 0){
$row = $query->row();
return $row->profileimage;
}
return $img;
}
}
答案 0 :(得分：0)
您能否告诉我为什么您从会话中读取文件名而不是使用上传的图像文件名？假设用户没有图像并且您在用户登录时设置了会话，那就不是NUll ??
答案 1 :(得分：0)
function upload() {
if ($this->input->post('submit')) {
$config['upload_path'] = './uploads/album/';
$config['allowed_types'] = 'jpeg|jpg|png|gif|';
$config['max_size'] = '500000';
$this->load->library('upload', $config);
if ($this->upload->do_upload()) {
$file = $this->upload->data();
$keterangan = $this->input->post('keterangan');
$this->MGallery->addGallery($file['file_name'], $keterangan);
$this->session->set_flashdata('message', 'Foto <b>' . $file['file_name'] . '</b> berhasil di upload!');
redirect('admin/album/index', 'refresh');
} else {
$this->session->set_flashdata('message', 'Foto <b>' . $file['file_name'] . '</b> gagal di upload!');
redirect('admin/album/lihat', 'refresh');
}
} else {
redirect('admin/album/lihat', 'refresh');
}
}
在您的模型中
function addGallery($file_name, $keterangan) {
$now = date("Y-m-d H:i:s");
$data = array(
'foto' => $file_name,
'keterangan' => $keterangan,
'IDKategori' => $this->input->post('kategori'),
'tgl' => $now
);
$this->db->insert('album', $data);
}
然后，在你的视图中
<?php
if ($this->session->flashdata('message')) {
echo "<div class='message'>" . $this->session->flashdata('message') . "</div>";
} ?>
<form action="<?= base_url(); ?>admin/album/upload" method="post" enctype="multipart/form-data" name="form1" id="form1">
<p>
<input type="file" name="userfile" size="20" />
</p>
<p>
<select name="kategori">
<?php
foreach ($gallery_cat as $key => $list) {
?>
<option value="<?= $list['IDKategori'] ?>">
<?= $list['kategori'] ?>
</option>
<?php
}
?>
</select>
</p>
<p>
<textarea name="keterangan" cols="40" rows="5"></textarea>
</p>
<p>
<label>
<input type="submit" name="submit" value="Uplaod Foto" />
</label>
<input type="button" value="Kembali" onClick="javascript: history.go(-1)" />
</p>