On 20/09/2010 19:19, Peter J. Farrell wrote:
Inline below...
Phil Ewington said the following on 09/20/2010 06:53 AM:
Hi All,
A little confusion over firstly how to achieve a redirection to an
event that is determined dynamically and secondly the best practises
for doing so.
The problem.... I have an event-handler calling an event filter to
determine which events to announce. That all works as expected.... I
then want to redirect to an event that is determined by the filter.
If I put...
<cfset variables.nextEvent =
iif(getProperty("SessionFacade").getDefaultCalendar() eq "M",
de('showMonthlyCalendar'), de('showWeeklyCalendar')) />
<cfset redirectEvent(variables.nextEvent, arguments.event.getArgs(),
true) />
at the end of my filter it redirects but my previously announced
events do not run.
A redirect is just like a cflocation -- all even queue processing
stops (including an events in the queue).
This is what confused me. I thought it queued the redirect to occur once
all other events had processed.
I have also tried separating the code across two filters, one that
announces events, the other that runs the redirect code as above and
added both filters to my event-handler....
<event-handler event="updateEvent" access="public">
<filter name="UpdateCalendarEventFilter" />
<filter name="CalendarEventRedirectFilter" />
</event-handler>
This is where you would need to "queue" the redirect by having your
CalendarEventRedirectFilter *announce* an event-handler that has
either a <redirect> command or a filter/listener that calls
redirectEvent() for you. You can do this by creating a generic
event-handler like my example below.
OK, so a redirectEvent command can queue the redirect action but only if
called from another event-handler? Think it would be great to extend the
redirectEvent command to allow a flag to queue the redirect, would save
on creating event-handlers just for that purpose. Just a thought ;)
I have other event-handlers that redirect without any logic that work
fine by simply creating an event-handler like....
<event-handler event="myEvent" access="public">
<notify method="myListener" method="myMethod" />
<redirect event="nextEvent" />
</event-handler>
Can I use variables in my mach-ii.xml file? How do I achieve what I
am after? Any pointers will be greatly appreciated.
We only allow them in certain places. You could do this:
<event-handler event="something" access="private>
<redirect event="${event.nameOfEventArgWithEventNameInIt}"
persist="true"/>
</event-handler>
It's all documented in our XML syntax:
http://trac.mach-ii.com/machii/wiki/ConfigFileExplained
HTH,
.Peter
Thanks for your help Peter, very much appreciated!
- Phil.
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