titanium alloy onClick parameters - view

Question

first of all: I am practicing with titanium, this are just my first "Hello World" apps to get confident with the framework, so any suggestion would be strongly appreciated.
I have this simple view:
<ScrollView id="grid" dataCollection="pictures">
<View class="single-item" title="{title}" author="{author}" desc="{desc}" onClick="showPic">
<ImageView class="thumb" image="/images/thumb-stock-1.jpg" />
<Label class="title" text="{title} by {author}" />
<Label class="desc" text="{desc}" />
</View>
</ScrollView>
Clicking on each item I call the function showPic() defined in my controller, and that's ok. But I would like to pass some parameters to that function, that are {title}, {author} and {desc}, so that I can handle them and "print" them on a new detail view for each specific item. With TableView it was easy (I just put: event.source -> title, event.source -> author ... inside my controller and I could read that table row data), but with my view that seems not work.
so my questions are:
1) how can I pass that parameters from VIEW: to CONTROLLER showPic()
2) generally speaking, if there is a better view to list some objects and opening each one with a click, just tell me how so that I can learn something more :D (PS: I cannot use tableView because my layout does not fit with this kind view)
---- EDIT: here follows my full code
index.xml:
<Alloy>
<Collection src="pictures"/>
<NavigationWindow id="navGroupWin">
<Window class="container" title="La mia galleria">
<View class="arrow arrow-up"><Label text="UP" /></View>
<ScrollView id="grid" dataCollection="pictures">
<View class="single-item" title="{title}" author="{author}" desc="{desc}" onClick="showPic">
<ImageView class="thumb" image="/images/thumb-stock-1.jpg" />
<Label class="title" text="{title} by {author}" />
<Label class="desc" text="{desc}" />
</View>
</ScrollView>
<View class="arrow arrow-down"><Label text="DOWN" /></View>
</Window>
</NavigationWindow>
</Alloy>
showPic from index.js:
function showPic(event) {
var pic = event.source;
var args = {
title: pic.title,
desc: pic.desc,
author: pic.author
};
var picView = Alloy.createController("detail", args).getView();
if (OS_IOS) {$.navGroupWin.openWindow(picView);}
if (OS_ANDROID) {picView.open();}
}
detail.xml:
<Alloy>
<Window class="container">
<View layout='vertical'>
<Label id="titleLabel"></Label>
<Label id="descLabel"></Label>
<Label id="authorLabel"></Label>
</View>
</Window>
</Alloy>
detail.js
var args = arguments[0] || {};
$.titleLabel.text = args.title || 'Default Title';
$.descLabel.text = args.desc || 'Default desc';
$.authorLabel.text = args.author || 'Default author';
when I click on each item of the index, my source.title, source.author and source.desc seems to be empty, and on the detail window I got back only 'Default' values

Answer 1

I am not sure if you can do this on the view file level.
What I would try is to assign ids to every view element (this is a general technique) and fully deploy all my click listeners inside the controller file, removing all onClick commands from view.
So:
Set id="myview" along with class="single-item" in your View
In your controller try
$.myview.addEventListener('click', function(e){
showPic(e.title, e.author, e.desc)
});

Answer 2

Not sure if it goes wrong somewhere else, but stripped down like this it works:
index.html
<Alloy>
<Window id="test">
<ScrollView id="grid" layout="vertical">
<View class="single-item" width="250" height="250" backgroundColor="blue" title="title" author="author" desc="desc" onClick="showPic">
</View>
<View class="single-item" width="250" height="250" backgroundColor="red" title="red" author="red" desc="red" onClick="showPic">
</View>
<View class="single-item" width="250" height="250" backgroundColor="yellow" title="yellow" author="yellow" desc="yellow" onClick="showPic">
</View>
<View class="single-item" width="250" height="250" backgroundColor="green" title="green" author="green" desc="green" onClick="showPic">
</View>
</ScrollView>
</Window>
</Alloy>
index.js
function showPic(event) {
Ti.API.info(JSON.stringify(event.source));
}
$.test.open();