Updating an Attribute When Clicking a Link

You are able to update a contact attribute by using the Smarty attribute crdl-setAttribute within an anchor tag. Note: It is necessary to have link tracking enabled in order for this feature to work. 

Update a string attribute

The following code will update the string attribute "flavor" with the value of "vanilla". 

<a href="http://www.example.com" crdl-setAttribute-flavor="vanilla">Click to set flavor to "vanilla".</a>

Update a number attribute

The following code will update the number attribute "points" with the value of "10".

<a href="http://www.example.com" crdl-setAttribute-points="10">Click to set points to "10".</a>

Increment a number attribute

Using the syntax :inc allows you to increment or decrement the value of a number attribute by providing a positive or negative value.

The following code will increment the number attribute "points" by "3".

<a href="http://www.example.com" crdl-setAttribute-points:inc="3">Click to increment the points value by "3".</a>

The following code will decrement the number attribute "points" by "3".

<a href="http://www.example.com" crdl-setAttribute-points:inc="-3">Click to decrement the points value by "3".</a>

Update a date attribute

The following code will update the date attribute "expiration" to the current date.

<a href="http://www.example.com" crdl-setAttribute-expiration={$smarty.now|date_format}>click to set expiration date to today.</a>

The following code will update the date attribute "expiration" to 30 days in the future.

<a href="http://www.example.com" crdl-setAttribute-expiration={"+30 days"|date_format}>click to set expiration date to 30 days in the future.</a>

The following code will update the date attribute "expiration" to 30 days in the past.

<a href="http://www.example.com" crdl-setAttribute-expiration={"-30 days"|date_format}>click to set expiration date to 30 days in the past.</a>

Update an array attribute

The following code will update the array attribute "categories" with the values "apparel", "electronics" and "home".

<a href="http://www.example.com" crdl-setAttribute-categories="apparel,electronics,home">click to set the "categories" array with the values "apparel,electronics,home".</a>

In the next article learn how to disable link tracking.