Actually, I could use some suggestions on better ways to accomplish what
Lucas is trying to do.
He has a canvas attribute called "data_url", and he wants a dataset to
automatically make a new request whenever that value changes. He's trying to
do that with a constraint
<dataset id="perms"
name="perms"
type="http"
src="${canvas.data_url}"
>
I was going to suggest setting 'autorequest=true' on the dataset, so that
it
will fire automatically when the src attribute changes, but the problem is
at startup,
the constraint system sends an event for "data_url", before it has
a legitimate value. He's trying to set the value from a browser query arg,
in the canvas
oninit handler.
e.g.,
<method name="init">
canvas.prof = lz.Browser.getInitArg('prof');
if(canvas.prof) {
canvas.setAttribute('data_url','/trunk/xml/request_key/' +
canvas.prof+".xml");
}
</method>
So the question is, is there any idiom for disabling the event-sending
action of a constraint until after the
system has initialized? It seems to me like people would run into this in a
lot of cases at
app startup?
On Sun, Jan 24, 2010 at 6:00 PM, Lucas Lain <[email protected]> wrote:
> Hello Henry,
>
> thank you very much for trying the code. I tried several things, and
> realized that everythings works OK when I use the button (as in your
> example).
>
> But when I try to automatically execute the perms.doRequest on init, it
> does not work.
>
> Is there a way to automatically execute perms.doRequest after finishing
> loading?
> Which is the best way of doing this.
>
> Thank you very much.
>
> Lucas.
>
> On Sat, Jan 23, 2010 at 6:52 PM, Henry Minsky <[email protected]>wrote:
>
>> Note, I am using the HttpFox plugin to trace the HTTP request from the
>> Flash player
>>
>> 2010/1/23 Henry Minsky <[email protected]>
>>
>> I'm not able to reproduce the problem you are reporting.
>>>
>>> I used the following test case
>>>
>>> <canvas proxied="false" oninit="canvas.sprite.setBGColor(null);"
>>> debug="true">
>>>
>>> <attribute name="prof" type="string" value=""/>
>>> <attribute name="data_url" type="string" value="BADVALUE"/>
>>>
>>> <method name="init">
>>> canvas.prof = lz.Browser.getInitArg('prof');
>>> if(canvas.prof) {
>>> canvas.setAttribute('data_url','/trunk/xml/request_key/' +
>>> canvas.prof+".xml");
>>> }
>>> </method>
>>>
>>> <dataset id="perms"
>>> name="perms"
>>> type="http"
>>> autorequest='false'
>>> ondata="Debug.info(this.serialize())"
>>> src="${canvas.data_url}"
>>> />
>>>
>>> <button onclick="perms.doRequest()">dorequest</button>
>>>
>>> </canvas>
>>>
>>>
>>> and fetched it with the URL
>>>
>>> http://127.0.0.1:8080/trunk/test/foo/player.lzx?prof=foo&debug=true&lzr=swf9
>>>
>>> When I click the button, the correct request is issued, to
>>> GET /trunk/xml/request_key/foo.xml?__lzbc__=1264279916554 HTTP/1.1
>>>
>>> Does this test case work for you?
>>>
>>>
>>> On Sat, Jan 23, 2010 at 1:43 PM, Lucas Lain <[email protected]>wrote:
>>>
>>>> I renamed everything to prof_p, but still can make it to work.
>>>>
>>>> Did anyone have a workaround for this?
>>>>
>>>> I just want to send some information to the webserver from the
>>>> flashclient.
>>>>
>>>> Best.
>>>>
>>>> L.
>>>>
>>>>
>>>>
>>>> On Sat, Jan 23, 2010 at 11:04 AM, Henry Minsky
>>>> <[email protected]>wrote:
>>>>
>>>>> One thing that is important, you should probably use a different query
>>>>> arg than "profile", because that has a special
>>>>> meaning to the LPS server, it is used to enable the profiler which is
>>>>> used to meter performance.
>>>>>
>>>>>
>>>>>
>>>>>> Best.
>>>>>>
>>>>>> L.
>>>>>>
>>>>>>
>>>>>> On Fri, Jan 22, 2010 at 1:14 AM, Lucas Lain <[email protected]>wrote:
>>>>>>
>>>>>>> Please see both attached files.
>>>>>>>
>>>>>>> The perms.doRequest is called from the view inside play_button.
>>>>>>>
>>>>>>> I'm using OL 4.7. The file is compiled to SWF9.
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Jan 22, 2010 at 1:04 AM, Henry Minsky <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>>> Where do you actually call the doRequest() method on the dataset?
>>>>>>>> Do you
>>>>>>>> call it manually?
>>>>>>>>
>>>>>>>> If the dataset is set to make the request automatically, e.g.,
>>>>>>>> (the 'request' attribute == true) then
>>>>>>>> the request might get made before the constraint updates.
>>>>>>>>
>>>>>>>> Also, what runtime are you using?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, Jan 21, 2010 at 9:48 PM, Lucas Lain
>>>>>>>> <[email protected]>wrote:
>>>>>>>>
>>>>>>>>> Hello Everybody,
>>>>>>>>>
>>>>>>>>> I'm trying to set a dataset url dynamically. The thing is that the
>>>>>>>>> dataset actually connects to the default data_url specified by default
>>>>>>>>> ("/xml/request_key") and not the dynamic one ("/xml/request_key/" +
>>>>>>>>> canvas.profile).
>>>>>>>>>
>>>>>>>>> When I check the value in the debug console, the value is set to
>>>>>>>>> the second, but actually connects to the first one.
>>>>>>>>>
>>>>>>>>> When the oninit method is executed? after processing all ${}
>>>>>>>>> values?
>>>>>>>>>
>>>>>>>>> Thanks in advance!
>>>>>>>>>
>>>>>>>>> code:
>>>>>>>>>
>>>>>>>>> <canvas proxied="false" oninit="canvas.sprite.setBGColor(null);"
>>>>>>>>> debug="true">
>>>>>>>>>
>>>>>>>>> <attribute name="profile" type="string" value=""/>
>>>>>>>>> <attribute name="data_url" type="string"
>>>>>>>>> value="/xml/request_key/"/>
>>>>>>>>>
>>>>>>>>> <handler name="oninit">
>>>>>>>>> canvas.profile = lz.Browser.getInitArg('profile');
>>>>>>>>> if(canvas.profile) {
>>>>>>>>> canvas.setAttribute('data_url','/xml/request_key/' +
>>>>>>>>> canvas.profile);
>>>>>>>>> }
>>>>>>>>> </handler>
>>>>>>>>>
>>>>>>>>> <dataset id="perms"
>>>>>>>>> name="perms"
>>>>>>>>> type="http"
>>>>>>>>> src="${canvas.data_url}"
>>>>>>>>> />
>>>>>>>>>
>>>>>>>>> ...
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Lucas
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Henry Minsky
>>>>>>>> Software Architect
>>>>>>>> [email protected]
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Lucas
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Lucas
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Henry Minsky
>>>>> Software Architect
>>>>> [email protected]
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Lucas
>>>>
>>>
>>>
>>>
>>> --
>>> Henry Minsky
>>> Software Architect
>>> [email protected]
>>>
>>>
>>>
>>
>>
>> --
>> Henry Minsky
>> Software Architect
>> [email protected]
>>
>>
>>
>
>
> --
> Lucas
>
--
Henry Minsky
Software Architect
[email protected]
