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Outputting a CSV (not from DB table)
1 January 2011 at 9:45am
I'm trying to create a csv report that calucualtes totals to be downloaded. I can write the file I'm just not sure how to get the button to push the file to the browser.
See bellow:
function downloadAirmilesReport(){
$trainers = DataObject::get("Member", "MemberType = 'Trainer' OR MemberType = 'Supervisor' OR MemberType = 'Manager'");
//CSV HeaderRow
$report = array(array("Offer","Report Date", "Collector Number", "Amount"));
//Open File
$fp = fopen('AirmilesReport.csv', 'w');
foreach ($trainers as $trainer) {
$id = $trainer->ID;
$memberType = $trainer->MemberType;
switch ($memberType) {
case "Trainer":
$clients = DataObject::get("Client", "AirMilesApproved = 1 AND TrainerID = '$id'");
$totalClients = $clients->count();
$totalPoints = $totalClients * 20;
break;
case "Supervisor":
$clients = DataObject::get("Client", "AirMilesApproved = 1 AND SupervisorID = '$id'");
$totalClients = $clients->count();
$totalPoints = $totalClients * 15;
break;
case "Manager":
$clients = DataObject::get("Client", "AirMilesApproved = 1 AND ManagerID = '$id'");
$totalClients = $clients->count();
$totalPoints = $totalClients * 5;
break;
}
if ($clients){
//Add Row to CSV
array_push($report,array("xxx", "01.01.01",$trainer->AirmilesID, $totalPoints)) ;
}
echo "<br>";
}
foreach ($report as $line){
fputcsv($fp, $line);
}
fclose($fp);
return $fp;
}Thanks
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Re: Outputting a CSV (not from DB table)
1 January 2011 at 10:41am
Since you'll need to read the contents of the file back, I'd use a temp file, rather than one with a constant name. So, instead of fopen():
$fp = tmpfile();
Then, instead of your current call to fclose():
$contents = '';
fseek($fp, 0);
while(!feof($fp)) $contents .= fread($fp, 8192);
fclose($fp);return SS_HTTPRequest::send_file($contents, 'AirmilesReport.csv', 'text/csv');
What this does is gets PHP to create a temporary file, which you write your CSV data to, then it returns to the start of the file, reads the contents of it into $contents, closes the file (which also gets PHP to delete it, as it was created with tmpfile()), then gets SilverStripe to force the browser to download $contents as AirmilesReport.csv with mime-type text/csv
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