nuBuilder Forum

Posted: **Thu Nov 21, 2019 2:51 pm**

Ok - and what should happen if you upload a new file in a row for which you have already uploaded one? Should the previously uploaded file be deleted?

Posted: **Thu Nov 21, 2019 3:29 pm**

johan wrote: Just when I delete a subrow containing a file.
Than the row is deleted in de sql table.

You can add this code in PHP AS (After Save) event:

Code: Select all

$uploaddir = $_SERVER['DOCUMENT_ROOT']."/libs/upload/documents/";

deleteFiles('sample_files',$uploaddir);  // Replace sample_files with your subform id

function deleteFiles($form, $uploaddir) {
  $o = nuSubformObject($form);
  
  for($i = 0 ; $i < count($o->rows) ; $i++){
      
		$fileid = $o->rows[$i][1];
		$filename = $o->rows[$i][2];
		$delete = $o->rows[$i][3];
		if ($delete == "1") {
			deleteFile($uploaddir . $fileid. "_". $filename);
		}
   }

}


function deleteFile($file)
{
    if (file_exists($file))
    {
        if (! unlink($file)) 
		{
			nuDebug("Cannot delete the file ".$file);
		}
    } else
	{
		nuDebug("File does not exist ".$file);
	}
}

Modify this part (numbers 1 ... 3). These are the column numbers

Code: Select all

	$fileid = $o->rows[$i][1];
		$filename = $o->rows[$i][2];
		$delete = $o->rows[$i][3];

You can also find them out if you run this PHP code in the AS first. (Replace sample_files with your subform id)

Code: Select all

nuDebug(nuSubformObject('sample_files'));

The you'll find in the debug a log entry like this:

Code: Select all

[0] : stdClass Object
(
    [id] => sample_files
    [foreign_key] => files_main_id
    [primary_key] => files_id
    [object_id] => 5dd0435d0785413
    [table] => files
    [action] => save
    [rows] => Array
        (
            [0] => Array
                (
                    [0] => -1  // this is the first column with the primary key
                    [1] => 1574345421_5dd69acd4e526_5dd69ab2b4db682
                    [2] => Test.pdf
                    [3] => 0 // last column: if delete then 1 else 0
                )

Posted: **Thu Nov 21, 2019 8:28 pm**

Kev1n

NuDebug returns
$

[0] => -1
[1] => Werken_aan_een_betere_aanpak_van_schulden_SAMvzw_15_april_2019_1_0.pdf
[2] => 1574364113_5dd6e3d1b3004_5da701edb0fb627
[3] => 0

So I've adjusted

$fileid = $o->rows[$i][2];
$filename = $o->rows[$i][1];
$delete = $o->rows[$i][3];

But when I save my form, the file is not deleted.

I've added nudebug(($uploaddir . $fileid. "_". $filename));
This returns

[0] : /var/www/html/documents/_[0] : /var/www/htmllibs/upload/documents/_

Johan

Posted: **Fri Nov 22, 2019 3:03 am**

johan wrote: NuDebug returns
$
[0] => -1
[1] => Werken_aan_een_betere_aanpak_van_schulden_SAMvzw_15_april_2019_1_0.pdf
[2] => 1574364113_5dd6e3d1b3004_5da701edb0fb627
[3] => 0

Could you show the full output of nudebug? And also the PHP code if you have changed anything.

Posted: **Fri Nov 22, 2019 8:24 am**

Kev1n

Here's the full debug

[0] : stdClass Object
(
[id] => blagen
[foreign_key] => bl_reg_id
[primary_key] => bl_id
[object_id] => 5dd16c9f90f9981
[table] => zzzsys_bijlage
[action] => save
[rows] => Array
(
[0] => Array
(
[0] => 5dd789fd50cf86d
[1] => Werken_aan_een_betere_aanpak_van_schulden_SAMvzw_15_april_2019_1_0.pdf
[2] => 1574406649_5dd789f949bf1_5da701edb0fb627
[3] => 1
)

[1] => Array
(
[0] => -1
[1] =>
[2] =>
[3] => 1
)

)

[columns] =>
[chartData] =>
[chartDataPivot] =>
[edited] => Array
(
[0] => Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
)

[1] => Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
)

)

[deleted] => Array
(
[0] => 1
[1] => 1
)

[fields] => Array
(
[0] => ID
[1] => bl_file_name
[2] => bl_file_id
[3] => nuDelete
)

)

and the php

Code: Select all

nuDebug(nuSubformObject('blagen'));

    $uploaddir = $_SERVER['DOCUMENT_ROOT']."libs/upload/documents/";

    deleteFiles('blagen',$uploaddir);  // Replace sample_files with your subform id

    function deleteFiles($form, $uploaddir) {
      $o = nuSubformObject($form);
     
      for($i = 0 ; $i < count($o->rows) ; $i++){
         
          $fileid = $o->rows[$i][2];
          $filename = $o->rows[$i][1];
          $delete = $o->rows[$i][3];
          if ($delete == "1") {
            
              nudebug(($uploaddir . $fileid. "_". $filename));
             deleteFile($uploaddir . $fileid. "_". $filename);
          }
       }

    }


    function deleteFile($file)
    {
        if (file_exists($file))
        {
            if (! unlink($file))
          {
             nuDebug("Cannot delete the file ".$file);
          }
        } else
       {
          nuDebug("File does not exist ".$file);
       }
    }

Posted: **Fri Nov 22, 2019 10:29 am**

This code will output each variable to the debug lug. Could you use it and then post the debug output here again?

Code: Select all

// nuDebug(nuSubformObject('sample_files'));

$uploaddir = $_SERVER['DOCUMENT_ROOT']."/libs/upload/documents/";

deleteFiles('sample_files',$uploaddir);

function deleteFiles($form, $uploaddir) {
  $o = nuSubformObject($form);
 
  for($i = 0 ; $i < count($o->rows) ; $i++){
	 
	  $fileid = $o->rows[$i][2];
	  $filename = $o->rows[$i][1];
	  $delete = $o->rows[$i][3];
	  
	  if ($delete == "1" && $fileid != '') {
	  
	  $debug  = "
		 rows id: $id
		 
		 fileid: $fileid
		 
		 filename: $filename
		 
		 delete: $delete
		 
		 uploaddir: $uploaddir
		 
		 ";
		 nuDebug($debug); 
		  
		 deleteFile($uploaddir . $fileid. "_". $filename);
	  }
   }
}

function deleteFile($file)
{
  
    if (file_exists($file))
    {
        if (! unlink($file)) 
		{
			nuDebug("Cannot delete the file ".$file);
		}
    } else
	{
		nuDebug("File does not exist ".$file);
	}
}

Posted: **Fri Nov 22, 2019 1:18 pm**

Kev1n
This is the output of debug

[0] :
rows id:

fileid: 1574424664_5dd7d05856d12_5da701edb0fb627

filename: tekst wonen beleidsplan.pdf

delete: 1

uploaddir: /var/www/html/libs/upload/documents/

Posted: **Fri Nov 22, 2019 1:39 pm**

It's a little weird, everything looks fine to me. Does the deleteFile() function also output an entry "Cannot delete the file" or "File does not exist" to the debug ?
If yes, can you show me the output?

Posted: **Fri Nov 22, 2019 1:58 pm**

Kev1n

[0] : File does not exist /var/www/html/libs/upload/documents/1574424664_5dd7d05856d12_5da701edb0fb627_tekst wonen beleidsplan.pdf

Johan

Posted: **Fri Nov 22, 2019 2:20 pm**

Can I presume that the file 1574424664_5dd7d05856d12_5da701edb0fb627_tekst wonen beleidsplan.pdf actually exists in that documents folder ?

If it exists, you need to figure out why file_exists() returns false.

Maybe this is helpful (from stackoverflow.com)

Why file_exists cannot find file?

Warning: This function returns FALSE for files inaccessible due to safe mode restrictions. However these files still can be included if they are located in safe_mode_include_dir.

http://php.net/manual/en/function.file- ... turnvalues

Or this
https://stackoverflow.com/questions/921 ... n-my-linux

Or google for "/var/www/html/" file_exists PHP to find more results.

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