NB. what follows is not meant to be a serious piece of code, i was bored and
well you know the saying "the devil makes work for idle hands" :)
Jared, please stop reading now...
I was wondering if there was anything to these frameworks that do everything
by convention, you know executing a controller method and including a view
template simply by parsing out the ?event=foo.bar url parameter. Then i
thought, hey ModelGlue can do that too, that's the beauty of configuration,
its you know.. configurable!
So, i thought use MG's onRequestStart message, grab the event=foo.bar, see
if theres a matching controller and method, if so execute it. Then see if
foo/bar.cfm exists in a view mapping and if so render it. simples no?
Turns out MG wants to queue up the page.missing event-handler even though
you've manually queued an event, so you need to run your code onRequestEnd
so it squashes the previous output, there's probably a way round that but i
didn't spend too much time looking.
here's some code...
In MG.xml
<controller id="ConventionController"
type="controller.ConventionController">
<message-listener message="onRequestEnd" function="dispatchEvent" />
<message-listener message="onRequestEnd" function="renderView" />
</controller>
<controller id="test" type="controller.TestController" />
in ConventionController.cfc
<cffunction name="dispatchEvent" output="false" access="public"
returntype="void">
<cfargument name="event" />
<cfset var ev = event.getValue(event.getValue("eventValue")) />
<cfset var ct = "" />
<cfset var fn = "" />
<cfset var ctrls = "" />
<cfif listlen(ev, ".") IS 2>
<cfset ct = listfirst(ev, ".") />
<cfset fn = listlast(ev, ".") />
<cfset ctrls = event.getModelGlue().controllers />
<cfif structKeyExists(ctrls, ct) AND structKeyExists(ctrls[ct], fn) AND
isCustomFunction(ctrls[ct][fn])>
<cfinvoke component="#ctrls[ct]#" method="#fn#">
<cfinvokeargument name="event" value="#event#" />
</cfinvoke>
</cfif>
</cfif>
</cffunction>
<cffunction name="renderView" output="false" access="public"
returntype="void">
<cfargument name="event" />
<cfset var ev = event.getValue(event.getValue("eventValue")) />
<cfset var ct = "" />
<cfset var fn = "" />
<cfset var views = event.getModelGlue().configuration.viewmappings />
<cfset var i = "" />
<cfset var view = "" />
<cfset var handler = "" />
<cfset var result = "" />
<cfif listlen(ev, ".") IS 2>
<cfset ct = listfirst(ev, ".") />
<cfset fn = listlast(ev, ".") />
<cfloop array="#views#" index="i">
<cfif fileExists(expandpath("#i#/#ct#/#fn#.cfm"))>
<cfset view = createobject("component",
"ModelGlue.gesture.eventhandler.View") />
<cfset view.name = "body" />
<cfset view.template = "#ct#/#fn#.cfm" />
<cfset handler = createobject("component",
"ModelGlue.gesture.eventhandler.EventHandler") />
<cfset handler.name = ev />
<cfset handler.addView(view) />
<cfset result = createobject("component",
"ModelGlue.gesture.eventhandler.Result") />
<cfset result.event = "template.main" />
<cfset handler.addResult(result) />
<cfset event.addTraceStatement("Convention", "Added event-handler #ev# by
convention")>
<cfset event.executeEventHandler(handler)/>
</cfif>
</cfloop>
</cfif>
</cffunction>
Now i can call index.cfm?event=test.index and it will look for a method
called index in the test controller, if its found it'll execute it. Then
look for test/index.cfm in the registered view mappings and if it exists,
render it.
Its good, in a really really bad way :D
Please please don't take this code and use it for anything, think of the
children!
Chris
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