Variables can be defined within a GSP using the
set tag:
<g:set var="now" value="${new Date()}" />Here we assign a variable called
now to the result of a GSP expression (which simply constructs a new
java.util.Date instance). You can also use the body of the
<g:set> tag to define a variable:
<g:set var="myHTML">
Some re-usable code on: ${new Date()}
</g:set>Variables can also be placed in one of the following scopes:
page - Scoped to the current page (default)
request - Scoped to the current request
flash - Placed within flash scope and hence available for the next request
session - Scoped for the user session
application - Application-wide scope.
To select which scope a variable is placed into use the
scope attribute:
<g:set var="now" value="${new Date()}" scope="request" />