FieldtypeQRCode by monollonom

Generates a QR Code from the public URL of the page

FieldtypeQRCode

A simple fieldtype generating a QR Code from the public URL of the page, and more.

Using the PHP library QR Code Generator by Kazuhiko Arase.

screenshot

Options


In the field’s Details tab you can change between .gif or .svg formats. If you select .svg you will have the option to directly output the markup instead of a base64 image. SVG is the default.

You can also change what is used to generate the QR code and even have several sources. The accepted sources (separated by a comma) are: httpUrl, editUrl, or the name of any text/URL/file/image field.

If LanguageSupport is installed the compatible sources (httpUrl, text field, ...) will return as many QR codes as there are languages. Note however that when outputting on the front-end, only the languages visible to the user will be generated.

Formatting


Unformatted value

When using $page->getUnformatted("qrcode_field") it returns an array with the following structure:

[
	[
		"label" => string,  // label used in the admin
		"qr" => string,     // the qrcode image
		"source" => string, // the source, as defined in the configuration
		"text" => string    // and the text used to generate the qrcode
	],
	...
]

Formatted value

The formatted value is an <img>/<svg> (or several right next to each other). There is no other markup.

Should you need the same markup as in the admin you could use:

$field = $fields->get("qrcode_field");
$field->type->markupValue($page, $field, $page->getUnformatted("qrcode_field"));

But it’s a bit cumbersome, plus you need to import the FieldtypeQRCode's css/js. Best is to make your own markup using the unformatted value.

Static QR code generator


You can call FieldtypeQRCode::generateQRCode to generate any QR code you want. Its arguments are:

string $text
bool   $svg    Generate the QR code as svg instead of gif ? (default=true)
bool   $markup If svg, output its markup instead of a base64 ? (default=false)

Hooks


Please have a look at the source code for more details about the hookable functions.

Examples

$wire->addHookAfter("FieldtypeQRCode::getQRText", function($event) {
	$page = $event->arguments("page");
	$event->return = $page->title;
	// or could be: $event->return = "Your custom text";
})
$wire->addHookAfter("FieldtypeQRCode::generateQRCodes", function($event) {
	$qrcodes = $event->return;
	// keep everything except the QR codes generated from editUrl
	foreach($qrcodes as $key => &$qrcode) {
		if($qrcode["source"] === "editUrl") {
			unset($qrcodes[$key]);
		}
	}
	unset($qrcode);
	$event->return = $qrcodes;
})

Install and use modules at your own risk. Always have a site and database backup before installing new modules.

Twitter updates

  • Great video by @jlahijani that demonstrates his ProcessWire page builder using ProFields Repeater Matrix, the new Page Autosave + Live Preview module and Uikit 3— youtube.com/watch?v=Rb5kiU…
    13 November 2021
  • More development on page automatic save this week, plus the addition of live preview— More
    12 November 2021
  • ProcessWire 3.0.189 core updates— More
    5 November 2021

Latest news

  • ProcessWire Weekly #394
    In the 394th issue of ProcessWire Weekly we'll share the latest ProcessWire news and updates, including some highlights from the support forum, the latest weekly update from Ryan, and more. Read on!
    Weekly.pw / 27 November 2021
  • New Repeater and Repeater Matrix features
    This week we have some very useful new additions to both the core Repeater Fieldtype and the ProFields Repeater Matrix Fieldtype. This post covers all the details along with a couple of brief demonstration videos. 
    Blog / 22 October 2021
  • Subscribe to weekly ProcessWire news

“We were really happy to build our new portfolio website on ProcessWire! We wanted something that gave us plenty of control on the back-end, without any bloat on the front end - just a nice, easy to access API for all our content that left us free to design and build however we liked.” —Castus, web design agency in Sheffield, UK