PeriodialUpdater does not like URL with port specified
Karel Minarik
I am playing with PeriodicalUpdater an it seems, that it doesn't like
port specified in URL. This does not fire anything when I look in
Firebug:
new Ajax.PeriodicalUpdater('chat', 'http://localhost:4567',
{asynchronous:true, frequency:3});
Without the port everything runs fine. Any ideas how this could be
fixed?
Thanks!,
Karel
Justin Perkins
> I am playing with PeriodicalUpdater an it seems, that it doesn't like
> port specified in URL.
With Ajax requests, you do not specify a port or a hostname.
Everything is relative to the URL in the address bar. This is
explicitly disallowed as part of the Ajax "standard".
-justin
Karel Minarik
thank you very much -- I have discovered the warning about ports @
http://www.prototypejs.org/learn/introduction-to-ajax an hour or so
ago :) I guess it should be repeated at documentation chapters for
relevant functions (Request, Update, PeriodicalUpdater) as well...
Actually I now battle another problem. When I have something this:
new Ajax.PeriodicalUpdater('chat', 'http://localhost:4567/listen',
{ asynchronous:true,
frequency: 1,
method: 'get',
insertion: Insertion.Top }
);
and the server responses with simple:
<p>Message</p>,
it is repeated four times... When I don't specify insertion param,
then it overwrites the content (which is correct), but this preferred
method for *updating* the contents does not work for me... Maybe I am
again overseeing something basic... Thanks for any help or kick
again...
Cheers,
Karel
On Jan 22, 4:53 pm, "Justin Perkins" <justinperk...@gmail.com> wrote:
Justin Perkins
> When I don't specify insertion param,
> then it overwrites the content (which is correct), but this preferred
> method for *updating* the contents does not work for me... Maybe I am
> again overseeing something basic... Thanks for any help or kick
Your request should look like this (you DO NOT want to specify the
protocol, hostname or port)
new Ajax.PeriodicalUpdater('chat', '/listen',
{ asynchronous:true,
frequency: 1,
method: 'get',
insertion: Insertion.Top }
);
What results are you getting?
-justin
Karel Minarik
you are right, the host, port, etc. are not needed and there should be
simply '/listen'. It works however even when I call Ajax with port --
the page itself just must be loaded at the same host, same port
(http://localhost:4567 in my case -- the default Sinatra [http://
sinatra.rubyforge.org] port).
BUT, the bigger problem is, that Ajax.PeriodicalUpdater keeps
inserting *more* elements than it receives from the server. I have
this code:
new Ajax.PeriodicalUpdater('chat_message', '/listen',
{ asynchronous:true,
frequency: 3,
method: 'get',
insertion: Insertion.Bottom }
);
This inserts four, five, fifteen elements in the <div id="chat"></
div>. Which effectively hinders *updating* the div content. After
frustratingly long time I rolled some periodical updater myself:
var Application = {
run : function() {
this.updater = new Ajax.Updater('chat_message', '/listen',
{ asynchronous:true,
method: 'get',
insertion: Insertion.Bottom }
);
},
start: function() {
this.interval = setInterval('Application.run()', 2000);
},
stop : function() {
clearInterval(this.interval);
this.updater = null;
},
}
Which *correctly* inserts only the elements returned fromm the
server... So I consider my problem solved, albeit not in an desired
way.
I don't know if this is some failure or misunderstanding on my part or
something goes weird inside Prototype...
Any ideas?
Karel
On Jan 22, 7:51 pm, "Justin Perkins" <justinperk...@gmail.com> wrote:
Justin Perkins
> BUT, the bigger problem is, that Ajax.PeriodicalUpdater keeps
> inserting *more* elements than it receives from the server.
OK, now we're getting somewhere. This sounds like the same issue as
discussed in this conversation:
http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thread/a96416ef48cf4c01
Might want to start following that thread to figure out what's going
on. I am using PeriodicalUpdater is many places and have not had any
issues like this, so not sure if it's an usage problem or what.
What version of prototype are you using?
-justin
Karel Minarik
I am using version 1.6.0 (double-checked now). Maybe the weirdness
from another thread is related, but my problem is actually something
else: I just want to *update* (ie. append) contents of some element,
not replace it. The documentation says giving a parameter `insertion`
is the right way to do it. In essence -- yes, but in my case only for
the Ajax.Updater, not Ajax.PeriodicalUpdater. If someone familiar with
the library could have a look inside prototype.js, it would be great.
Does this simple example work for you, Justin?
new Ajax.PeriodicalUpdater('some_div', '/some_file',
frequency: 3,
method: 'get',
insertion: Insertion.Bottom
}
);
Karel
On Jan 22, 11:49 pm, "Justin Perkins" <justinperk...@gmail.com> wrote:
>
> > BUT, the bigger problem is, that Ajax.PeriodicalUpdater keeps
> > inserting *more* elements than it receives from the server.
>
> OK, now we're getting somewhere. This sounds like the same issue as
Justin Perkins
> Does this simple example work for you, Justin?
>
> new Ajax.PeriodicalUpdater('some_div', '/some_file',
> { asynchronous:true,
> frequency: 3,
> method: 'get',
> insertion: Insertion.Bottom
> }
> );
>
Yes, I tried that exact snippet and it worked fine. An example
response from the /some_file URL is:
<p>I made it. {{ insert timestamp here }}</p>
-justin
Karel Minarik
--> http://pastie.textmate.org/142692
The results when run simply from the disk (file://...), Prototype
version 1.6.0:
* Mac Firefox, Mac Safari, Win Firefox: Behaves weird, insert more
than one element (three, four, etc)
* Win IE6: Doesn't insert anything
Could someone compare this in his/her environment?
Should this be moved to Prototype-Core?
Thanks,
Karel
On Jan 23, 3:46 pm, "Justin Perkins" <justinperk...@gmail.com> wrote:
Tobie Langel
That's a bug that was corrected.
Best,
Tobie
Richard Quadling
So, not exactly sure what you SHOULD be doing instead.
(I disable my deprecated section).
In debugging, I get an exception.
e.name = 'TypeError'
e.message = "Access is denied."
e.number = -2147024891
e.description = e.message
This is on IE7 on WinXPSP2.
Works fine on FF.
Add this to the PeriodicalUpdater params
onException: function() { alert('It has all gone a bit Pete Tong.'); }
On 24/01/2008, Karel Minarik <karel....@gmail.com> wrote:
>
> OK, I have made a simple, plain HTML test, see pastie:
>
> -->http://pastie.textmate.org/142692
>
> The results when run simply from the disk (file://...), Prototype
> version 1.6.0:
>
> * Mac Firefox, Mac Safari, Win Firefox: Behaves weird, insert more
> than one element (three, four, etc)
> * Win IE6: Doesn't insert anything
>
> Could someone compare this in his/her environment?
>
> Should this be moved to Prototype-Core?
>
> Thanks,
>
> Karel
>
> On Jan 23, 3:46pm, "Justin Perkins" <justinperk...@gmail.com> wrote:
> > On Jan 23, 2008 3:59 AM, Karel Minarik <karel.mina...@gmail.com> wrote:
> >
> > > Does this simple example work for you, Justin?
> >
> > > new Ajax.PeriodicalUpdater('some_div', '/some_file',
> > > { asynchronous:true,
> > > frequency: 3,
> > > method: 'get',
> > > insertion: Insertion.Bottom
> > > }
> > > );
> >
> > Yes, I tried that exact snippet and it worked fine. An example
> > response from the /some_file URL is:
> >
> > <p>I made it. {{ insert timestamp here }}</p>
> >
> > -justin
> >
>
--
-----
Richard Quadling
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
"Standing on the shoulders of some very clever giants!"
Richard Quadling
Hmm.
I used http://prototypejs.org/assets/2007/11/6/prototype.js (1.6.0)
and it goes odd in FF (duplicate entries made).
Normally I use SVN trunk and make my own release for testing.
So, using trunk upto changeset 8714, it works in Win FF 2.0.0.11 on
WinXPSP2, but not in IE7 on WinXPSP2
Joy!
Tobie Langel
It's a known issue.
One we'll need to code around by defaulting to ActiveX.
Please feel free to open a ticket regarding this.
Best,
Tobie
On Jan 24, 12:08 pm, "Richard Quadling" <rquadl...@googlemail.com>
wrote:
>
>
>
> > Insertion is deprecated in V1.6.0.1
>
> > So, not exactly sure what you SHOULD be doing instead.
>
> > (I disable my deprecated section).
>
> > In debugging, I get an exception.
>
> > e.name = 'TypeError'
> > e.message = "Access is denied."
> > e.number = -2147024891
> > e.description = e.message
>
> > This is on IE7 on WinXPSP2.
> > Works fine on FF.
>
> > Add this to the PeriodicalUpdater params
>
> > onException: function() { alert('It has all gone a bit Pete Tong.'); }
>
Karel Minarik
thanks, Tobie, the trunk version behaves correctly -- ie. it does not
insert mupltiple elements.
Anyone experiencing this issue, grab the version 1.6.0.1 or higher.
Cheers,
Karel