Update DataGrid over ArrayCollection

Question

Hey,
I have got a problem with the updating capabiliy of the
ArrayCollection.
I fill the array like this.
quote:
[Bindable]
private var content:ArrayCollection = new ArrayCollection();
private function contentRPCResult(event:ResultEvent):void {
content = event.result.allEntries.entry;
The data I like to fill the ArrayCollection with, is
information I got from a mysql database over PHP. It needs to be
reloaded from time to time, because the content changes quiet
frequently. So I used a "Refresh" button. While clicking on it the
RPC "contentRPC.send();" gets sent again. The command works fine,
because the first time the database content loads into the app.
If I click on the refresh button, nothing happens. I thought,
if the content of an ArrayCollection changes, the content of its
dataprovider changes as well?! I used an XMLListCOllection in
another app, there it works. If I send the HTTPRquest again, the
content changes if there were any changes since the last load.
I even tried removeAll() or refresh() to empty the Array and
fill it again with the new data. It doesn't work. Only the first
loaded content is displayed in the data provider. If i reload the
whole app, the content shows the actuall content (which is the
first loaded content, indeed!).
So my question is: I fill an ArrayCollection with
"contentRPC.send();" (HTTPRequest) once. The dataprovider shows the
content. When I user "contentRPC.send()" again and the new content
is different to the old one, how could I refill the ArrayCollection
with the new content (it should automatically change the content of
the dataprovider)?
Hopefully you understand my problem. I am actually German, so
it was hard for me to explain, what I really intend to do!
Thanks for any help.
greets lindner

Answer 1

Hey Vygo,
thank you for your answer. Unfurtunatly it is not a cache
problem. I tried the unique thing, which sounds very meaningful.
But the ArrayCollection still gets not refreshed, or reloaded. When
I use the PHP Script on its own, it always shows the current
content, using no cache at all. So I know the right content gets
passed to the flex app, but the app does not use it!
Any other suggestions, maybe there is a cache problem in
flex?
I just took a look in the older app where I used an
XMLListCollection to fill the dataprovider.
There the command to gill the XMLListCollection was
"HTTPRequest_ID.
lastResult.XML_node". Now I fill the ArrayCollection only
with "content = event.
result.allEntries.entry;". I can not use lastResult at this
point. Might this be a problem? I an't believe there is no way to
fill an ArrayCollection at runtime more than one time?!
greetings lindner