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expression function - read cookie [2016/09/14 14:19] (current)
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 +====== Read Cookie (Expression Function) ======
 +
 +===== Purpose =====
 +The **Read Cookie** function (READ_COOKIE) reads a cookie from the browser that was set using a [[Action Type - Set Browser Cookie|Set Browser Cookie]] [[Action|action]]. ​ It is commonly used to track a user to determine if he or she has accessed a page before. ​ It is **not** advisable to use cookies for important security checks because it is easy for a cookie to be deleted, added, or copied which could lead to a security breach.
 +
 +{{ :​read_cookie_initial.png?​nolink |}}
 +===== Parameters =====
 +The **Read Cookie** function has one required parameter:
 +
 +==== Cookie Name ====
 +
 +Allowed Inputs: [[Field|field]] value or text string
 +
 +Either use the use the [[Query Builder]] to choose a field that contains the name of the cookie or use type a value to enter a text string that is the name of the cookie.
 +
 +===== Output =====
 +
 +The output of the **Read Cookie** function is a string that was previously set by the set browser cookie action. ​ If the cookie does not exist then an empty string will be returned.
 +
 +===== Example =====
 +
 +The output of the **Read Cookie** function is based on the value set by the action. ​ For example if a set browser cookie action set the value "​Bobby"​ to the cookie titled "​Nickname"​ then READ_COOKIE("​Nickname"​) would return "​Bobby"​.
  
expression function - read cookie.txt ยท Last modified: 2016/09/14 14:19 (external edit)
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