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[英]Blueimp jQuery-File-Upload with codeigniter upload and rename and resize the images
[英]“Blueimp jQuery File Upload” rename files
我正在使用Blueimp jQuery文件上传工具。 我想在上传文件时完全重命名它们。 由于照片是根据用户ID添加到唯一目录中,因此我真的只想添加名称为001.jpg,002.jpg,003.jpg等的照片。如何做到这一点(可以通过修改UploadHandler来实现)。 php或index.php?
在index.php中(下面的代码当前会更改上传目录):
$userID = 'user005'; //hardcoded in this example
$options = array('upload_dir'=>'files/'.$userID.'/', 'upload_url'=>'files/'.$userID.'/');
$upload_handler = new UploadHandler($options);
旧帖子,但由于今天我正在搜索相同的内容,因此我发布了我的解决方案,希望它能对某人有所帮助。
我以这种方式编辑UploadHandler.php文件:
//custom function which generates a unique filename based on current time
protected function generate_unique_filename($filename = "")
{
$extension = "";
if ( $filename != "" )
{
$extension = pathinfo($filename , PATHINFO_EXTENSION);
if ( $extension != "" )
{
$extension = "." . $extension;
}
}
return md5(date('Y-m-d H:i:s:u')) . $extension;
}
protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
$index = null, $content_range = null) {
$file = new \stdClass();
//MYEDIT to generate unique filename
$file->name = $this->generate_unique_filename($name);
//ORIGINAL LINE: $file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);
//...
}
对于那些仅通过$options
给出name
的人:
替换(1056行?)
$file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);
与
$extension = pathinfo($name , PATHINFO_EXTENSION);
if ( $extension != "" ){
$extension = "." . $extension;
}
$file->name = (isset($this->options['filename']) && isset($extension) )
? $this->options['filename'] . $extension
: $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);
然后在这样的选项中输入名称:
$upload_handler = new UploadHandler(array(['filename' => 'whatever' ]));
为什么不尝试uniqid()
生成唯一名称?
protected function generate_unique_filename( $filename = "" )
{
$extension = "";
if ( $filename != "" )
{
$extension = pathinfo( $filename, PATHINFO_EXTENSION );
if ( $extension != "" )
{
$extension = "." . $extension;
}
}
return md5( uniqid() ) . $extension;
//or simply return uniqid() . $extension;
}
感谢那 !
但是我有一个问题,我想用一个字段标题来重命名,我尝试使用它:
protected function handle_form_data($file, $index) {
$file->title = @$_REQUEST['title'][$index];
}
protected function generate_unique_filename($filename = "") {
$extension = "";
if ( $filename != "" )
{
$extension = pathinfo( $filename, PATHINFO_EXTENSION );
if ( $extension != "" ) {
$extension = "." . $extension;
}
}
return $file->title . $extension;
}
但是我每次都会收到JSON错误...(@ $ _ REQUEST ['title'] [$ index];运行良好,我将其保存在数据库中)
在UploadHandler
类中编辑$name
变量以获取唯一的文件名。 看代码
protected function get_file_name($file_path, $name, $size, $type, $error,$index,$content_range)
对于多个文件下载,我从SananTheBest添加一些行,如下所示。 实际上,原因文件无法上传,因为即使使用日期,文件名称也相同,如他先前的文章中所述。 (谢谢)
protected function generate_unique_filename($filename = "")
{
$extension = "";
if ( $filename != "" )
{
$extension = pathinfo($filename , PATHINFO_EXTENSION);
if ( $extension != "" )
{
$extension = "." . $extension;
}
}
//$filenamegen = date('ymdHis').generateRandomString();
$characters = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
$charactersLength = strlen($characters);
$randomString = "";
for ($i = 0; $i < 5 ; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
//$filenamerandom=$filename.".jpg";
//return md5(date('Y-m-d H:i:s:u')). $extension;
return date('ymdHis').$randomString . $extension ;
}
get_file_name
方法是实际命名的地方。 为了避免过多的变通办法,只需将钉子钉在头上,请按如下所示进行编辑:
protected function get_file_name($file_path, $name, $size, $type, $error,
$index, $content_range) {
$name = $this->trim_file_name($file_path, $name, $size, $type, $error,
$index, $content_range);
//don't return this right away; parse it to a variable
$unique_file_name = $this->get_unique_filename(
$file_path,
$this->fix_file_extension($file_path, $name, $size, $type, $error,
$index, $content_range),
$size,
$type,
$error,
$index,
$content_range
);
//generate your custom name here
$custom_name = uniqid('profilepic');
//extract file extension
$file_extension = pathinfo($unique_file_name, PATHINFO_EXTENSION);
return $custom_name.'.'.$file_extension;
}
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