How do you add a PayPal button?

From Joomla! Documentation

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PayPal, Google Checkout and other ecommerce sites often provide HTML code that you can use to insert links such as Add to Cart and Buy Now buttons into your Website.

It is generally preferable to create a Custom HTML module instead of just pasting the code into an article. This way you can put the link in a module position on as many page as you like. You can also put the module inside an article using the {loadposition myposition} command.

PayPal Technical Documentation[edit]

Specifications and examples of the HTML code are shown in the PayPal Payments Standard Integration Guide.

HTML Editor Pitfalls[edit]

You can insert this type of HTML code, including forms, either inside an Article or in a Custom HTML Module. However, the TinyMCE editor will normally strip out HTML code. If you try to paste in some types of HTML code using this editor, it will not work; the editor will remove the code when you save the Article or Module.

TinyMCE Editor Solution[edit]

To avoid this problem while using the TinyMCE editor:

  1. Go to the User Manager and change the User Editor to No editor.
  2. Go to the article or Custom HTML module and paste in the desired HTML code.
  3. Go back to the User Manager and change the User Editor back to TinyMCE.

Note that you will need to repeat this any time you want to edit the code (unless you use the alternate solution below).

JCE Editor Solution[edit]

  1. Install the JCE editor from the Joomla Extensions Directory
  2. Change the default editor Global Configuration  Site  Default WYSIWYG Editor to JCE from TinyMCE. You may also need to change the default editor for other users.
  3. Go to the article or Custom HTML module and hit the show/hide button, which will change the edit box to allow you to input HTML code instead of WYSIWYG text.
  4. Paste the HTML code into the editor.

When you navigate back to the article or module in the Backend, it will already be set to HTML input; the code will not get garbled. This is easier than having to change the user settings each time you want to edit the code while you are testing different button settings.

Email Cloaking Pitfalls[edit]

The PayPal code includes an email address for your Website. Joomla! has a Plugin called Content - Email Cloaking that attempts to disguise emails in Articles. If you wish to paste the PayPal code directly inside an Article, you may need to disable this Plugin. Navigate to Extensions  Plugins, find the Plugin Content - Email Cloaking and click the green checkbox in the Enabled column to disable it.

Plugins are not processed in modules, so should you use a Custom HTML module, you will still be able to have email cloaking enabled.

Article-Specific Email Cloaking Switch[edit]

You can disable email cloaking in an article by entering {emailcloak=off} anywhere in the article before the email address. With this control, you do not need to disable global email cloaking.

Secure Merchant Account ID in Place of the Email Address[edit]

PayPal offers a Secure Merchant Account ID (an alphanumeric string used in place of the merchant email address) at no cost. It is available for Web Payments Standard customers as well as in the extra-cost plans. Email cloaking does not affect the Secure Merchant Account ID.

PayPal Button Function Invoked by a Joomla Menu Item[edit]

You may use a menu item to act as a PayPal button. For example, the PayPal View Cart button simply sends a query string as part of a Uniform Resource Locator (URL) using an HTML form. You can create a Joomla menu item that performs the same function.

In the Menu Item Manager create a new External Link menu item. In the Menu Item Details section, go to the Link field and enter at URL of the form:

https://www.paypal.com/us/cgi-bin/webscr&business=myusername@mysite.com&cmd=_cart&display=1

Replace myusername@mysite.com in the URL example above with the unique username of your PayPal account.

To test the operation in the PayPal Sandbox, simply modify the URL slightly so that www.paypal.com becomes www.sandbox.paypal.com.

https://www.sandbox.paypal.com/us/cgi-bin/webscr&business=myusername@mysite.com&cmd=_cart&display=1