How to edit a record with an image?

<?php
$file = JRequest::getString('YOUR_IMAGE_FIELD_NAME', '', 'post');
if ( !$file ) {
  unset($_POST['YOUR_IMAGE_FIELD_NAME']);
}
?>

<?php
$file = $form->data['YOUR_IMAGE_FIELD_NAME'];
if ( !isset($file) && ( !$file || $file == '' ) {
  unset($form->data['YOUR_IMAGE_FIELD_NAME']);
}
?>

<?php
if  ( $form->data['eraserimage']<>'nao' )  
{
  unset ($form->data['image_bk']);
  $form->data['image']='';
}
?>

What I did:
1 - created a image_bk field as a hidden field (field_name: image, field_id: image_bk).
Just this solve problem 1. Without any code. I can't really explain.

Well spotted, thank you, I've updated the FAQ.

The Hidden input must be before the File input, is this true for your form?

<div id="image_container_div" class="ccms_form_element cfdiv_file label_over" style="">
<label for="image">Image</label>
<input type="hidden" alt="ghost" value="" name="image">
<input id="image" class="" type="file" name="image" title="">
<div class="small-message">
<div class="clear"></div>
<div id="error-message-image"></div>
</div>
<img style="max-width:200px" src="http://mysite.com/components/com_chronoforms/uploads/myform/testimage.png">
<div id="image_clear_container_div" class="ccms_form_element cfdiv_checkboxgroup" style="">

I'm not sure that you can usefully re-load a File Upload value :-( The value is a local path which has no meaning on the server; and most browsers will leave the input empty anyhow.

If you want to do this then perhaps you have to upload the file before showing the confirmation page?

Hi Maxx,
What is the problem that you are trying to solve?

<?php
if ( isset($form->data['myimage']) && $form->data['myimage'] ) {
  echo "<img src='".JURI::root()."components/com_chronoforms/uploads/{$form->form_details->name}/{$form->data['myimage']}' style='max-width:200px' />";
} else {
   echo "No image";
}
?>

<?php
if  ( isset($form->data['myimage_clear']) && $form->data['myimage_clear'] == 'yes' ) {
 $form->data['myimage'] = '';
 $form->data['myimage_clear'] = ''; 
}
?>

[*]ghost value = {myimage} 🤔

4. Click the Ghost tab on the File Upload element and make sure that the 'Enable Ghost' box is checked.

The ghost value of the upload field stays empty.

No matter if I just enable the checkbox Enable Ghost without writing anything into the field Ghost value or if I add {name_of_my_upload_field} there, looking at the source code shows:
(cut)
Am I missing anything?

<div style="" id="myimage_container_div" class="ccms_form_element cfdiv_file label_over"><label for="myimage">Foto</label><input type="hidden" alt="ghost" value="filename.JPG" name="myimage">
<input type="file" name="myimage" title="" class="" id="myimage">
<div class="small-message">Select a picture.</div><div class="clear"></div><div id="error-message-myimage"></div></div>
<img style="max-width:200px" src="http://mysite/components/com_chronoforms/uploads/filename.JPG">
<div style="" id="myimage_clear_container_div" class="ccms_form_element cfdiv_checkbox"><input type="checkbox" class="label_left" name="myimage_clear" title="" id="myimage_clear" value="yes">
<label for="myimage_clear">Clear the picture</label><div class="clear"></div><div id="error-message-myimage_clear"></div></div>

<div class="ccms_form_element cfdiv_file" id="picture_big_container_div" style=""><label for="picture_big">Bild gross:</label><input type="hidden" name="picture_big" value="" alt="ghost" />
<input id="picture_big" class="formfield" title="" type="file" name="picture_big" />
<div class="clear"></div><div id="error-message-picture_big"></div></div><img src='http://localhost/test/images/jcss/mypicture-big.jpg' style='max-width:200px' /><div class="ccms_form_element cfdiv_checkbox" id="del_big_picture_container_div" style=""><input type="hidden" name="del_big_picture" value="" alt="ghost" />
<input value="yes" id="del_big_picture" title="" type="checkbox" name="del_big_picture" class="label_left" />
<label for="del_big_picture">Grosses Bild löschen</label><div class="clear"></div><div id="error-message-del_big_picture"></div></div>

It's a local test installation, but if necessary I can put it online somewhere.

It could be easier to find out the problem...

<?php

$HasPic = $form->data['myimage'];

if($HasPic != '') {
echo "<input id=\"myimage\" type=\"hidden\" value=\"$HasPic\" name=\"myimage\" />";
}

?>

if ( isset($form->data['imagem_ficha_atleta']) && $form->data['imagem_ficha_atleta'] ) {
  echo "<img src='".JURI::root()."components/com_chronoforms/uploads/{$form->form_details->name}/{$form->data['imagem_ficha_atleta']}' style='max-width:200px' />";
} else {
   echo "No image";
}
?>
<div class="ccms_form_element cfdiv_file" id="imagem_ficha_atleta_container_div" style=""><label for="imagem_ficha_atleta">Foto</label><input id="imagem_ficha_atleta" class="" title="" type="file" name="imagem_ficha_atleta" />

root()."components/com_chronoforms/uploads/

{$form->form_details->name}

components/com_chronoforms/uploads/{$form->form_details->name}/{$form->data['imagem_ficha_atleta']}