Website (iFrame)

The iFrame solution allows you to display a Payrexx payment page within your website. All you need to do is copy the code snippets onto your website. For developers there are more advanced integration options available, described down below.

Necessary resources

For the basic implementation, there are no resources necessary.

Example code

You can just paste the following code:

<iframe src="https://demo.payrexx.com/pay?tid=345a142d" width="530" height="700">
</iframe>

For src just enter the URL of your payment page.

Advanced integration

var iFrame = jQuery('iframe');

var postMessage = function(e) {
  if (typeof e.data === 'string') {
    try {
      var data = JSON.parse(e.data);
    } catch (e) {}
    if (data && data.payrexx) {
      jQuery.each(data.payrexx, function(name, value) {
        switch (name) {
          // implement functions here
        }
      });
    }
  }
};

iFrame.on('load', function() {
        jQuery(this)[0].contentWindow.postMessage(JSON.stringify({origin: window.location.origin}), iFrame.attr('src'));
});

window.addEventListener('message', postMessage, false);

The first function to implement where the comment is, could be the

height: Dynamic height of iFrame. So the iFrame has no scroll bar itself.
You should not set the parameter appview if you want a dynamic height!
top: If you have the dynamic height functionality implemented, you probably need to implement the scroll functionality to have the page scrolled if necessary. (e.g. on "Add to cart" button or on "Go to checkout")
transaction: For all the transaction data, like the status, you can receive the transaction object.
closeModal: This contains the redirect URL which you can use to lead the customer to the respective page. The IFrame is not allowed to make redirections on your site, therefore you need to execute this redirection yourself

Here you go with a full code example:

var iFrame = jQuery('iframe');
var transaction = null;
var lastPostMessageHeight = 0;

var updateIframeHeight = function() {
  var height = lastPostMessageHeight;
	
  // This can be individually changed.
  // Currently the full height is only applied for big displays (> 590px in width)
  if (window.innerWidth <= 590) {
    iFrame.css('height', '100%');
  } else if (height) {
    iFrame.css('height', height + 'px');
  }
};

var scrollPage = function(offset) {
  var positionToScrollTo = iFrame.position().top + offset;
  jQuery('body, html').animate({scrollTop: positionToScrollTo}, 1000, 'linear', function() {
    jQuery(window).trigger('scroll')
  });
};

var postMessage = function(e) {
  if (typeof e.data === 'string') {
    try {
      var data = JSON.parse(e.data);
    } catch (e) {}
    if (data && data.payrexx) {
      jQuery.each(data.payrexx, function(name, value) {
        switch (name) {
          case 'height':
            lastPostMessageHeight = parseInt(value);
            updateIframeHeight();
            break;
          case 'top':
            scrollPage(parseInt(value));
            break;
          case 'transaction':
            if (typeof value === 'object') {
              transaction = value;
            }
            break;
          case 'closeModal':
            window.location.href = value;
            break;
        }
      });
    }
  }
};

window.addEventListener('message', postMessage, false);

iFrame.on('load', function() {
  jQuery(this)[0].contentWindow.postMessage(JSON.stringify({origin: window.location.origin}), iFrame.attr('src'));
  jQuery(window).resize(updateIframeHeight);
  updateIframeHeight();
});

var t;
jQuery(window).scroll(function(event) {
  window.clearTimeout(t);
  t = window.setTimeout(function() {
    iFrame[0].contentWindow.postMessage(JSON.stringify({scrollTopShoppingCart: jQuery(window).scrollTop() - iFrame.position().top}), iFrame.attr('src'));
  }, 100);
});