Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




Databases - Practical PostgreSQL
Previous Page Home Next Page

Accessing Cookie Values

Unlike some other web-languages, such as PHP, cookies are not implicitly treated as variables. Instead, LXP maintains a separate list of cookies in addition to its list of variables. This is done to ensure that methods that should apply to cookies always do, and to prevent the collision of variable names and cookie names.

Therefore, to display a cookie, use the <putcookie> tag, as shown in Example 13-7.

Example 13-7. Displaying a cookie value

  Your cookie "user" is set to: <putcookie name="user" />

If you wish to substitute the value of a cookie into an LXP attribute, you might think you could do so with the same dollar sign notation used to substitute variable values. However, this introduces a point of ambiguity between cookie values and variable values. Therefore, cookie values may be accessed through the special cookies LXP object.

Example 13-8. Substituting cookie values

  <setvar welcome_msg="Welcome, @cookies.user!" />
  <if cookies.user>
    <putvar name="welcome_msg" />

As of LXP 0.8, for backwards compatibility, if a variable is not found with a specified substitution name (e.g., $my_cookie), LXP will search the list of cookies for a cookie with that name. This behavior is scheduled to either be removed (or be made configurable) in future versions of LXP, however.

Databases - Practical PostgreSQL
Previous Page Home Next Page

  Published under the terms of the Open Publication License Design by Interspire