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nivyaj

7:13 PM

hey @metadaddy

how's it going?

metadaddy

@nivyaj Going well - hey - 2 people in here at the same time!

How are things with you?

nivyaj

for all intents & purposes, it's a crowd in here :)

metadaddy

@nivyaj LOL

nivyaj

pretty good. plowwing through some code.

yourself?

metadaddy

Updating wiki.developerforce.com/page/…, doing some Force.com/ExactTarget integration, and preparing a session on Minecraft and Raspberry Pi!

And answering questions on StackExchange

nivyaj

7:18 PM

hah, i really liked that streaming API minecraft demo you did

metadaddy

:-D

nivyaj

are there any real world applications that are derivitive of it?

metadaddy

Not directly, but we're showing it on Salesforce1 World Tours as an example of APIs in action

e.g. twitter.com/eannacunnane/status/451452828981428226

It's certainly sparking a lot of thinking about what is possible with the APIs

nivyaj

nice, I'll check it out when i get home.

metadaddy

7:36 PM

Cool - lunchtime here! Ping me any time in this room - it's always open in my browser!

ttfn

nivyaj

later!

@meta If you have a chance, can you g

metadaddy

@nivyaj g???

nivyaj

can you take a look at this? i'm stuck salesforce.stackexchange.com/questions/32091/…

if you have a sec :-/

metadaddy

So where are you stuck right now?

I see Mohith's suggestion to use an actionFunction - looks sensible

nivyaj

i can't get the syntax to work.

metadaddy

7:43 PM

salesforce.com/us/developer/docs/pages/Content/…

The syntax of the actionFunction?

nivyaj

this is throwing null

    console.log(document.getElementById("!$Component.successCode"));

i think my action function is ok

<apex:actionFunction name="updateState" rerender="form" />
<apex:inputHidden id="successCode" value="{!successCode}"/>

and in my controller, i have a getter setter for successCode

metadaddy

Ugh - use jquery - th3silverlining.com/2011/06/24/…

nivyaj

haha

metadaddy

That $Component stuff is a nightmare

nivyaj

Yes!

metadaddy

7:46 PM

You have to reference it close to the element

so, right after, I think you can do this...

<apex:inputHidden id="successCode" value="{!successCode}"/>
<script>
var successCode = document.getElementById("{!$Component.successCode}");
</script>

I think I remember that working

Oh - and you were missing the {} from console.log(document.getElementById("!$Component.successCode"));

Should be console.log(document.getElementById("{!$Component.successCode}"));

nivyaj

i don't follow why i need 2 scripts

metadaddy

The key seems to be to put the reference to $Component right after the element, so VF doesn't have to traverse the DOM

nivyaj

aren't i setting it intially?

metadaddy

See salesforce.com/us/developer/docs/pages/Content/…

"A $Component path specifier is matched against the component hierarchy:
At the current level of the component hierarchy where $Component is used; and then
At each successive higher level in the component hierarchy, until a match is found, or the top-level of the component hierarchy is reached.
There is no backtracking, so if the ID you’re trying to match requires a traversal up and then back down, it won’t match."

So referencing it right there seems to solve the problem

You can put the var successCode in script at the top of the page

nivyaj

Ah, that's helpful...

thanks :)

metadaddy

7:52 PM

At runtime, the assignment will happen as the page loads, since VF substitutes the string for {!$Component.successCode}

and then you can use successCode wherever it's in scope

Good luck!

nivyaj

enjoy your lunch :)