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delete_resource()

Parameters

ColumnTypeDefaultDescription
$ref

Location

include/resource_functions.php lines 3169 to 3288

Definition

 
function delete_resource($ref)
    {
    global $userref;
    # Delete the resource, all related entries in tables and all files on disk
    $resource = get_resource_data($ref);

    if (!$resource
        ||
            (
                (
                checkperm("D")
                ||
                !get_edit_access($ref,$resource["archive"],$resource)
                ||
                (isset($userref) && $resource["lock_user"] > 0 && $resource["lock_user"] != $userref)
                )
            &&
                !hook('check_single_delete')
            &&
                PHP_SAPI != 'cli'
            )
        )
        {return false;}

    $current_state=$resource['archive'];

    global $resource_deletion_state, $staticsync_allow_syncdir_deletion, $storagedir;
    if (isset($resource_deletion_state) && $current_state!=$resource_deletion_state) # Really delete if already in the 'deleted' state.
        {
        # $resource_deletion_state is set. Do not delete this resource, instead move it to the specified state.
        update_archive_status($ref, $resource_deletion_state, $current_state);

        # log this so that administrator can tell who requested deletion
        resource_log($ref,LOG_CODE_DELETED,'');

        # Log the deletion of this resource for any collection it was in.
        $in_collections = ps_query("select collection, resource from collection_resource where resource = ?", array("i", $ref));

        # Remove the resource from any collections
        ps_query("delete from collection_resource where resource = ?", array("i", $ref));

        if (count($in_collections) > 0)
            {
            for($n=0; $n < count($in_collections); $n++)
                {
                collection_log($in_collections[$n]['collection'], LOG_CODE_COLLECTION_DELETED_RESOURCE, $in_collections[$n]['resource']);
                }
            }

        return true;
        }

    # FStemplate support - do not allow samples from the template to be deleted
    if (resource_file_readonly($ref)) {return false;}


    # Is transcoding
    if ($resource['is_transcoding']==1) {return false;} # Can't delete when transcoding

    # Delete files first
    $extensions = array();
    $extensions[]=$resource['file_extension']?$resource['file_extension']:"jpg";
    $extensions[]=$resource['preview_extension']?$resource['preview_extension']:"jpg";
    $extensions[]=$GLOBALS['ffmpeg_preview_extension'];
    $extensions[]='icc'; // also remove any extracted icc profiles
    $extensions=array_unique($extensions);

    foreach ($extensions as $extension)
        {
        $sizes=get_image_sizes($ref,true,$extension);
        foreach ($sizes as $size)
            {
            if (file_exists($size['path']) && ($staticsync_allow_syncdir_deletion || false !== strpos ($size['path'],$storagedir))) // Only delete if file is in filestore
                {
                $pathtofile = realpath($size['path']); // avoid passing relative path to unlink function to prevent error on removal of file.
                unlink($pathtofile);
                }
            }
        }

    hook('delete_resource_extra', '', array($resource));

    # Delete any alternative files
    $alternatives=get_alternative_files($ref);
    for ($n=0;$n<count($alternatives);$n++)
        {
        delete_alternative_file($ref,$alternatives[$n]['ref']);
        }


    //attempt to remove directory
    $resource_path = get_resource_path($ref, true, "pre", true);

    $dirpath = dirname($resource_path);
    hook('delete_resource_path_extra', '', array($dirpath));
    @rcRmdir ($dirpath); // try to delete directory, but if we do not have permission fail silently for now

    hook("beforedeleteresourcefromdb","",array($ref));

    # Delete all database entries
    clear_resource_data($ref);
    resource_log($ref,LOG_CODE_DELETED_PERMANENTLY,'');
    ps_query("delete from resource where ref=?",array("i",$ref));
    ps_query("delete from collection_resource where resource=?",array("i",$ref));
    ps_query("delete from resource_custom_access where resource=?",array("i",$ref));
    ps_query("delete from external_access_keys where resource=?",array("i",$ref));
    ps_query("delete from resource_alt_files where resource=?",array("i",$ref));
    ps_query(
        "    DELETE an
               FROM annotation_node AS an
         INNER JOIN annotation AS a ON a.ref = an.annotation
              WHERE a.resource = ?",array("i",$ref)
    );
    ps_query("DELETE FROM annotation WHERE resource = ?",array("i",$ref));
    hook("afterdeleteresource");
    
    clear_query_cache("stats");

    return true;
    }

This article was last updated 27th April 2024 10:05 Europe/London time based on the source file dated 26th April 2024 11:50 Europe/London time.