passing Event collection to nested handlers and other things

Communities ColdBox HMVC
1

I am wondering how to have a handler that gets init'd by another
handler see the Event collection.

So I have a parent Handler

<cfcomponent name="general" extends="coldbox.system.eventhandler"
output="false">
         <cffunction name="dspDashboard" access="public"
returntype="void" output="false" hint="Not USING">
    <cfargument name="Event" type="coldbox.system.beans.requestContext">
    <!--- RC Reference --->
    <cfset var rc = event.getCollection()>

    <!--- runevent to ehDashboard to retrieve dashboard component
information --->
    <cfscript>
      var dashBrd = createObject("component","handlers.ehDashboard").init
();
      var userDatap = structNew();
      // Call ehDashboard methods to generate data packets
      dashBrd.getAlerts(userDatap) ;
    </cfscript>

    <!--- Do Your Logic Here to prepare a view --->
    <cfset Event.setValue("welcomeMessage","Welcome to ColdBox!")>
    <cfset Event.setLayout("Layout.Dashboard")>
    <!--- Set the View To Display, after Logic --->
    <cfset Event.setView("vwDashboard")>

  </cffunction>

</cfcomponent>

child function in ehDashboard

<cffunction name="getAlerts" displayname="getAlerts" hint="get Alerts"
access="public" output="false" returntype="Any">
    <cfargument name="Event" type="coldbox.system.beans.requestContext">
    <cfargument name="userData" type="Struct" required="false" />
    <!--- TODO: Implement Method --->
    <cfscript>
      var rc = event.getCollection();
      var alertData = StructNew();
      //var userData = arguments.userData ;
      var sortOrder = 'DESC';
      if (structKeyExists(userData,'sortOrder')){
        sortOrder = userData.sortOrder;
      }
      getAlertsobj = createObject("component","model.pba.dashboard");

      alertData.smartAlerts = getAlertsobj.getAlerts
(1,userData,sortOrder);
      alertData.pbaAlerts = getAlertsobj.getAlerts(2,userData,sortOrder);
      alertData.cpsAlerts = getAlertsobj.getAlerts(3,userData,sortOrder);

    </cfscript>
    <cfreturn alertData />
  </cffunction>

So what I want to do is acccess the "rc" directly in dashBrd.getAlerts
(). I know I can pass "rc" and probably should do that anyways. But,
I have wondered why sometimes I cannot use Event.getCollection().
Probably the fact still understanding framework and some OO concepts.

Thanks for any insight
Kevin

2

No offense meant, but I am extremely confused (errr… QuackFuzed) by what you’re attempting to do. If you’re trying to run another event, you do so like this…

var rc = event.getCollection(); runEvent("handler.event");

There is no createObject() call or anything like that.

3

I am with Matt. You are doing too much work and basically taking on the responsibility of the handler life cycles.

If you need to chain an event, use runEvent()

luis

4

Must get sleep. :slight_smile: OMG, yeah totally forgot. And here at my day job I
do just that, heck even tell my developers to do that.

Thanks for stating the obvious, On that do have a similar question.

I created a plugin based off your hello example and, probably due to
lack of understanding, was trying to access the same above scope.
In the handlers and interceptors I usually just add the extra "Event"
argument and be done. Yet was not able to so did this

var rc = controller.getRequestService().getContext().getCollection();

I am sure that is the wrong way to do it, just not sure the right way.

Thanks

5

var rc = controller.getRequestService().getContext().getCollection();

^ is the correct way to get the request collection in a plugin. :slight_smile:

6

Scary I am learning.. Thanks Matt

7

Heh. No problem. :slight_smile: