我将以下页面摘录和表单配置为允许用户将照片上传到他们的个人资料。当用户更新其配置文件但未指定图像时，将从配置文件扩展字段中删除上载的原始图像。它又回到了空白。
问题：有没有办法防止这种情况发生。想要允许用户更新个人资料，但不要删除之前上传的图片网址。
段
<?php
// initialize output;
$output = true;
// get the current user name to create the file name as
$userName = $modx->user->get('username');
// valid extensions
$ext_array = array('jpg', 'jpeg', 'gif', 'png');
// create unique path for this form submission
$uploadpath = 'assets/uploads/';
// you can create some logic to automatically
// generate some type of folder structure here.
// the path that you specify will automatically
// be created by the script if it doesn't already
// exist.
// EXAMPLE:
// this would put all file uploads into a new,
// unique folder every day.
// $uploadpath = 'assets/'uploads/'.date('Y-m-d').'/';
// get full path to unique folder
$target_path = $modx->config['base_path'] . $uploadpath;
// get uploaded file names:
$submittedfiles = array_keys($_FILES);
// loop through files
foreach ($submittedfiles as $sf) {
// Get Filename and make sure its good.
$filename = basename( $_FILES[$sf]['name'] );
// Get file's extension
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$ext = mb_strtolower($ext); // case insensitive
// is the file name empty (no file uploaded)
if($filename != '') {
// is this the right type of file?
if(in_array($ext, $ext_array)) {
//create file called the user name + pic
$filename = $userName . "pic".'.'.$ext ;
// full path to new file
$myTarget = $target_path . $filename;
// create directory to move file into if it doesn't exist
mkdir($target_path, 0755, true);
if(file_exists($myTarget)) {
chmod($myTarget,0755); //Change the file permissions if allowed
unlink($myTarget); //remove the file
}
// is the file moved to the proper folder successfully?
if(move_uploaded_file($_FILES[$sf]['tmp_name'], $myTarget)) {
// set a new placeholder with the new full path (if you need it in subsequent hooks)
$hook->setValue($sf, $uploadpath . $filename);
// set the permissions on the file
if (!chmod($myTarget, 0644)) { /*some debug function*/ }
} else {
// File not uploaded
$errorMsg = 'There was a problem uploading the file.';
$hook->addError($sf, $errorMsg);
$output = false; // generate submission error
}
} else {
// File type not allowed
$errorMsg = 'Type of file not allowed.';
$hook->addError($sf, $errorMsg);
$output = false; // generate submission error
}
// if no file, don't error, but return blank
} else {
$hook->setValue($sf, '');
}
}
return $output;
资源
[[!UpdateProfile? &useExtended=`1` &postHooks=`redirect_profile_update` &preHooks=`user_profile_image`]]
<div class="update-profile">
<div class="updprof-error">[[+error.message]]</div>
[[+login.update_success:if=`[[+login.update_success]]`:is=`1`:then=`[[%login.profile_updated? &namespace=`login` &topic=`updateprofile`]]`]]
<form class="form" enctype="multipart/form-data" action="[[~[[*id]]]]" method="post">
<input type="hidden" name="nospam:blank" value="" />
<label for="fullname"><i class="icon-user"></i> <strong>[[!%login.fullname? &namespace=`login` &topic=`updateprofile`]]</strong>
<span class="error">[[+error.fullname]]</span>
</label>
<input type="text" name="fullname" id="fullname" value="[[+fullname]]" />
<label for="email"><i class="icon-envelope"></i> <strong>[[!%login.email]]</strong>
<span class="error">[[+error.email]]</span>
</label>
<input type="text" name="email" id="email" value="[[+email]]" />
<div class="row clearfix">
<div class="label"><img src="[[+nomination_file:phpthumbof=`w=120&h=120&zc=1&fltr[]=ric|20|20`
]]" /></div> <span class="error">[[+fi.error.nomination_file]]</span>
<div class="input"><input id="nomination_file" name="nomination_file" type="file" value="[[+fi.nomination_file]]" maxlength="100000" /></div>
</div>
<br class="clear" />
<button class="btn-info btn btn-large" type="submit" name="login-updprof-btn">Update Profile</button>
</form>
</div>
答案 0 :(得分：0)
无法准确记住formIt的工作原理，但请尝试从值占位符中删除fi.前缀：
<div class="input"><input id="nomination_file" name="nomination_file" type="file" value="[[+nomination_file]]" maxlength="100000" /></div>
这样输入应填充现有的图像路径，如果没有上传其他图像，将会重新提交。
答案 1 :(得分：0)
这是一种有效的方法
PHP代码段
<?php
// initialize output;
$output = true;
// get the current user name to for dicroty placement
$userName = $modx->user->get('username');
// valid extensions
$ext_array = array('jpg', 'jpeg', 'gif', 'png');
// create unique path for this form submission
$uploadpath = 'assets/userfiles/' . $userName .'/';
// get full path to unique folder
$target_path = $modx->config['base_path'] . $uploadpath;
// get uploaded file names:
$submittedfiles = array_keys($_FILES);
//get exsisting user profile data for Profile_Photos
$fields = $modx->user->getOne('Profile')->get('extended');
$Photo_fields = $fields['Profile_Photos'];
// loop through files
foreach ($submittedfiles as $sf) {
// Get Filename and make sure its good.
$filename = basename( $_FILES[$sf]['name'] );
// Get file's extension
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$ext = mb_strtolower($ext); // case insensitive
if($filename != '') {
$modx->log(modX::LOG_LEVEL_ERROR,'in file name loop'.$filename);
// is this the right type of file?
if(in_array($ext, $ext_array)) {
//create file called the filename that has been sanitized
$filename = strtolower(preg_replace("/[^A-Za-z0-9.]+/i", "-", $filename));
//$filename = $filename . '.'.$ext ;
// full path to new file
$myTarget = $target_path . $filename;
// create directory to move file into if it doesn't exist
mkdir($target_path, 0755, true);
if(file_exists($myTarget)) {
chmod($myTarget,0755); //Change the file permissions if allowed
unlink($myTarget); //remove the file
}
// is the file moved to the proper folder successfully?
if(move_uploaded_file($_FILES[$sf]['tmp_name'], $myTarget)) {
// set a new placeholder with the new full path (if you need it in subsequent hooks)
$hook->setValue($sf, $uploadpath . $filename);
// set the permissions on the file
if (!chmod($myTarget, 0644)) { /*some debug function*/ }
}
else {
// File not uploaded
$errorMsg = 'There was a problem uploading the file.';
$hook->addError($sf, $errorMsg);
$output = false; // generate submission error
}
}
else {
// File type not allowed
$errorMsg = 'Type of file not allowed.';
$hook->addError($sf, $errorMsg);
$output = false; // generate submission error
}
}
else {
//check to see if there is exsisting photofields value and return value if so
if ($Photo_fields != '')
{
$hook->setValue($sf, $Photo_fields);
}
else{
// if no file, don't error, but return blank
// is the file name empty (no file uploaded) and exsiting photofields empty
$hook->setValue($sf, '');
}
}
}
return $output;
更改个人资料表格
[[!UpdateProfile? &useExtended=`1` &postHooks=`redirect_profile_update` &preHooks=`user_profile_image`]]
<div class="update-profile">
<div class="updprof-error">[[+error.message]]</div>
[[+login.update_success:if=`[[+login.update_success]]`:is=`1`:then=`[[%login.profile_updated? &namespace=`login` &topic=`updateprofile`]]`]]
<form class="form" enctype="multipart/form-data" action="[[~[[*id]]]]" method="post">
<input type="hidden" name="nospam:blank" value="" />
<label for="fullname"><i class="icon-user"></i> <strong>[[!%login.fullname? &namespace=`login` &topic=`updateprofile`]]</strong>
<span class="error">[[+error.fullname]]</span>
</label>
<input type="text" name="fullname" id="fullname" value="[[+fullname]]" />
<label for="email"><i class="icon-envelope"></i> <strong>[[!%login.email]]</strong>
<span class="error">[[+error.email]]</span>
</label>
<input type="text" name="email" id="email" value="[[+email]]" />
<div class="row clearfix">
<div class="label"><img src="[[+Profile_Photos:phpthumbof=`w=120&h=120&zc=1&fltr[]=ric|20|20`
]]" /></div> <span class="error">[[+fi.error.Profile_Photos]]</span>
<div class="input"><input id="Profile_Photos" name="Profile_Photos" type="file" value="[[+fi.Profile_Photos]]" maxlength="100000" /></div>
</div>
<br class="clear" />
<button class="btn-info btn btn-large" type="submit" name="login-updprof-btn">Update Profile</button>
</form>
</div>