SQLPage built-in functions
In addition to normal SQL functions supported by your database, SQLPage provides a few special functions to help you extract data from user requests.
These functions are special, because they are not executed inside your database, but by SQLPage itself before sending the query to your database. Thus, they require all the parameters to be known at the time the query is sent to your database. Function parameters cannot reference columns from the rest of your query.
SQLPage functions
The sqlpage.cookie function
Introduced in SQLPage 0.7.1.
Reads a cookie with the given name from the request. Returns the value of the cookie as text, or NULL if the cookie is not present.
Cookies can be set using the cookie component.
Example
Set a cookie
Set a cookie called username
to greet the user by name every time they visit the page:
select 'cookie' as component, 'username' as name, :username as value;
SELECT 'form' as component;
SELECT 'username' as name, 'text' as type;
Read a cookie
Read a cookie called username
and greet the user by name:
SELECT 'text' as component,
'Hello, ' || sqlpage.cookie('username') || '!' as contents;