Comment puis-je forcer un téléchargement de fichier dans le backend WordPress?

Question

Comment puis-je forcer un téléchargement de fichier dans le backend WordPress?

- 33
- 47023 2010-10-31
Je voudrais ajouter unbouton "Cliquerpourtélécharger" à l'un demesplugins WordPress,et jene saispas quel hook utiliser.Jusqu'àprésent,accrocher 'admin_init' à ce code semblefonctionner:

header("Content-type: application/x-msdownload"); header("Content-Disposition: attachment; filename=data.csv"); header("Pragma: no-cache"); header("Expires: 0"); echo 'data'; exit();

Cela semblefonctionner,maisje veuxjuste voir s'ilexiste unebonnepratique.

Merci, Dave
I would like to add a "Click to download" button to one of my WordPress plugins, and I'm not sure which hook to use. So far, hooking 'admin_init' to this code seems to work:

header("Content-type: application/x-msdownload"); header("Content-Disposition: attachment; filename=data.csv"); header("Pragma: no-cache"); header("Expires: 0"); echo 'data'; exit();

This seems to work, but I just want to see if there is a best practice out there.

Thanks, Dave
plugins

2 réponses

votes

Developer · Answer 1 · 2013-01-04

4

2013-01-04

un autreplugin utilepour l'exportation auformat CSV.peut être utile à quelqu'un

     <?php

class CSVExport
{
/**
* Constructor
*/
public function __construct()
{
if(isset($_GET['download_report']))
{
$csv = $this->generate_csv();

header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private", false);
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename=\"report.csv\";" );
header("Content-Transfer-Encoding: binary");

echo $csv;
exit;
}

// Add extra menu items for admins
add_action('admin_menu', array($this, 'admin_menu'));

// Create end-points
add_filter('query_vars', array($this, 'query_vars'));
add_action('parse_request', array($this, 'parse_request'));
}

/**
* Add extra menu items for admins
*/
public function admin_menu()
{
add_menu_page('Download Report', 'Download Report', 'manage_options', 'download_report', array($this, 'download_report'));
}

/**
* Allow for custom query variables
*/
public function query_vars($query_vars)
{
$query_vars[] = 'download_report';
return $query_vars;
}

/**
* Parse the request
*/
public function parse_request(&$wp)
{
if(array_key_exists('download_report', $wp->query_vars))
{
$this->download_report();
exit;
}
}

/**
* Download report
*/
public function download_report()
{
echo '<div class="wrap">';
echo '<div id="icon-tools" class="icon32">
</div>';
echo '<h2>Download Report</h2>';
//$url = site_url();

echo '<p>Export the Users';
}

/**
* Converting data to CSV
*/
public function generate_csv()
{
$csv_output = '';
$table = 'users';

$result = mysql_query("SHOW COLUMNS FROM ".$table."");

$i = 0;
if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_assoc($result)) {
$csv_output = $csv_output . $row['Field'].",";
$i++;
}
}
$csv_output .= "\n";

$values = mysql_query("SELECT * FROM ".$table."");
while ($rowr = mysql_fetch_row($values)) {
for ($j=0;$j<$i;$j++) {
$csv_output .= $rowr[$j].",";
}
$csv_output .= "\n";
}

return $csv_output;
}
}

// Instantiate a singleton of this plugin
$csvExport = new CSVExport();

one more useful plugin for exporting into CSV. may be useful to some one

    <?php

class CSVExport
{
/**
* Constructor
*/
public function __construct()
{
if(isset($_GET['download_report']))
{
$csv = $this->generate_csv();

header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private", false);
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename=\"report.csv\";" );
header("Content-Transfer-Encoding: binary");

echo $csv;
exit;
}

// Add extra menu items for admins
add_action('admin_menu', array($this, 'admin_menu'));

// Create end-points
add_filter('query_vars', array($this, 'query_vars'));
add_action('parse_request', array($this, 'parse_request'));
}

/**
* Add extra menu items for admins
*/
public function admin_menu()
{
add_menu_page('Download Report', 'Download Report', 'manage_options', 'download_report', array($this, 'download_report'));
}

/**
* Allow for custom query variables
*/
public function query_vars($query_vars)
{
$query_vars[] = 'download_report';
return $query_vars;
}

/**
* Parse the request
*/
public function parse_request(&$wp)
{
if(array_key_exists('download_report', $wp->query_vars))
{
$this->download_report();
exit;
}
}

/**
* Download report
*/
public function download_report()
{
echo '<div class="wrap">';
echo '<div id="icon-tools" class="icon32">
</div>';
echo '<h2>Download Report</h2>';
//$url = site_url();

echo '<p>Export the Users';
}

/**
* Converting data to CSV
*/
public function generate_csv()
{
$csv_output = '';
$table = 'users';

$result = mysql_query("SHOW COLUMNS FROM ".$table."");

$i = 0;
if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_assoc($result)) {
$csv_output = $csv_output . $row['Field'].",";
$i++;
}
}
$csv_output .= "\n";

$values = mysql_query("SELECT * FROM ".$table."");
while ($rowr = mysql_fetch_row($values)) {
for ($j=0;$j<$i;$j++) {
$csv_output .= $rowr[$j].",";
}
$csv_output .= "\n";
}

return $csv_output;
}
}

// Instantiate a singleton of this plugin
$csvExport = new CSVExport();

Joko Wandiro · Answer 2 · 2014-12-24

3

2014-12-24

admin_init Hook ou load- (page) Hook semblefonctionner,WordPressn'apas été définien-tête dans cet état. J'utilise le crochet load- (page) caril s'exécute lorsqu'unepage demenu d'administrationest chargée. Vouspouvez charger votre scriptpour unepage spécifique.

Vouspouvez vérifier load- (page) Hook sur WordPress Codex

Si vous utilisez admin_init Hook,assurez-vous de vérifiernonce en utilisant check_admin_referer ou un autre scriptpeut-êtrepasser la condition obtiendra la sortie de votretéléchargementfichier.