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uarlive
Visitor
‎04-04-2014 03:39 PM

Google Universal Analytics

I am having trouble with logging events using the Measurement Protocol for Universal Google Analytics. Below is the function in question. I know spaces have to be urlencoded but I cant seem to get xfer.Escape or xfer.urlencode to work on the payload. Any help in the right direction is appreciated. Thanks.

Function UA_trackEvent(EventCat as String , EventAct as String , EventLab as String , EventVal as String) as Void

    payload = "v=1"
    payload = payload + "&uid=" + m.UATracker.userID
    payload = payload + "&cid=" + m.UATracker.clientID
    payload = payload + "&tid=" + m.UATracker.AccountID   
    payload = payload + "&dimension1=" + m.UATracker.model
    'payload = payload + "&dimension2=" + m.UATracker.DisplayName
    payload = payload + "&sr=" + m.UATracker.display     
    payload = payload + "&sd=" + m.UATracker.ratio
    payload = payload + "&dr=" + config().trafSource

    'payload = payload + "&an=" + m.UATracker.appName
    'payload = payload + "&av=" + m.UATracker.appVersion

    payload = payload + "&t="  + "event" 
    If Len(EventCat) > 0
    payload = payload + "&ec=" + EventCat  <-- problem area
    end if
    If Len(EventAct) > 0
    payload = payload + "&ea=" + EventAct
    end if
    If Len(EventLab) > 0
    payload = payload + "&el=" + EventLab <-- problem area
    end if
    If Len(EventVal) > 0
    payload = payload + "&ev=" + EventVal
    end if

    xfer = CreateObject("roURLTransfer")
    xfer.Addheader("x-roku-reserved-dev-id","")
    xfer.SetURL(m.UATracker.endpoint + "?" + payload + "&z=" + GetRandomInt(10))
    response = xfer.GetToString()
       
End Function



in the video brs file I am calling 

UA_trackEvent("Video Plays", "play", episode.title, "")


the episode.title has spaces in it.
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3 REPLIES 3
RokuChris
Roku Employee
Roku Employee
‎04-04-2014 04:01 PM

Re: Google Universal Analytics

"uarlive" wrote:
I cant seem to get xfer.Escape or xfer.urlencode to work on the payload.


If you're escaping the whole payload, you're going to end up encoding characters that are part of the structure of the URL and shouldn't be encoded (?, &, =). Be sure you are only escaping the parameter values.
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uarlive
Visitor
‎04-04-2014 04:43 PM

Re: Google Universal Analytics

Thanks.

I tried this as well.

    payload = payload + "&t="  + "event" 
    If Len(EventCat) > 0
    payload = payload + "&ec=" + xfer.Escape(EventCat)
    end if
    If Len(EventAct) > 0
    payload = payload + "&ea=" + xfer.Escape(EventAct)
    end if
    If Len(EventLab) > 0
    payload = payload + "&el=" + xfer.Escape(EventLab)
    end if
    If Len(EventVal) > 0
    payload = payload + "&ev=" + EventVal
    end if



It returned this error.

'Dot' Operator attempted with invalid BrightScript Component or interface reference. (runtime error &hec) in ...MHenu/pkg:/source/GAStats.brs(95)

095: payload = payload + "&ec=" + (xfer.Escape(EventCat))
Backtrace:
Function ua_trackevent(eventcat As , eventact As , eventlab As , eventval As ) As
file/line: /tmp/plugin/JGAA...MHenu/pkg:/source/GAStats.brs(95)
Function main() As
file/line: /tmp/plugin/JGAAAADMHenu/pkg:/source/appMain.brs(12)
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uarlive
Visitor
‎04-04-2014 04:47 PM

Re: Google Universal Analytics

I figured it out.

xfer = CreateObject("roURLTransfer")

Was moved to the top of the function. I was calling it prematurely. Thanks for the help.
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