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cc_humbry

2007-Oct-02 15:17 UTC

Prototype onComplete callback not working consistently

Hi,
I have read a number of the post in this group that suggest others are
having probs too with this and tried (I think) all of the suggestions
offered but still have a problem.

The following code ..

function actionMailbox(id, status, numberMailboxes) {
	lastMailboxId = id;
	var pars = "?action=actionMailbox&mailboxId=" + id +
"&mailboxStatus=" + status;
	new Ajax.Updater(
		''messageBox'',
		''/anonymail/messageManager.do'' ,
		{
			method: ''get'',
			parameters: pars,
			onComplete: function () { updateMailboxImage();}
		}
	);
}

function updateMailboxImage() {
	var pars = "?action=updateImage&mailboxId=" + lastMailboxId;
	new Ajax.Updater(
		''mailbox_'' + lastMailboxId,
		''/anonymail/messageManager.do'' ,
		{
			method: ''get'',
			parameters: pars
		}
	);
}

works for the first function, but the onComplete function call doesn''t
consistently work. The first call does some server side saving to db
etc. (I have a number of functions that do other stuff), but then I
want an image to change according to the state of a particular object
that has just been altered in the first call. Obviously the second
function therefore needs to be called when the first one has ''done its
stuff'' and the object is in a new state. However, the second function
doesn''t always get fired at the completion of the first one - it
appears sometimes to get fired just before the end and therefore when
it looks at the latest state of the object to then get the correct
image to reflect the state, it hasn''t been fully saved to the db and
the old state is retrieved resulting in the wrong image being shown. I
can see that the second function is called before the end of the first
when I look at the request in firebug (firefox extension).

Can anyone suggest anything else I could try??

Thanks
Conrad


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Richard Quadling

2007-Oct-02 15:20 UTC

head link

Re: Prototype onComplete callback not working consistently

Add an onException responder to see if that is causing a problem ...

Ajax.Responders.register({onException:function(o_Requester,
o_Exception, o_JSON){console.info(o_Requester, o_Exception,
o_JSON);}});

Put that at the top of your script and then run it all again. Anything
going wrong within the Ajax calls should be reported to firebug''s
console.



On 02/10/2007, cc_humbry
<conrad.crampton-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> Hi,
> I have read a number of the post in this group that suggest others are
> having probs too with this and tried (I think) all of the suggestions
> offered but still have a problem.
>
> The following code ..
>
> function actionMailbox(id, status, numberMailboxes) {
>         lastMailboxId = id;
>         var pars = "?action=actionMailbox&mailboxId=" + id +
> "&mailboxStatus=" + status;
>         new Ajax.Updater(
>                 ''messageBox'',
>                 ''/anonymail/messageManager.do'' ,
>                 {
>                         method: ''get'',
>                         parameters: pars,
>                         onComplete: function () { updateMailboxImage();}
>                 }
>         );
> }
>
> function updateMailboxImage() {
>         var pars = "?action=updateImage&mailboxId=" +
lastMailboxId;
>         new Ajax.Updater(
>                 ''mailbox_'' + lastMailboxId,
>                 ''/anonymail/messageManager.do'' ,
>                 {
>                         method: ''get'',
>                         parameters: pars
>                 }
>         );
> }
>
> works for the first function, but the onComplete function call
doesn''t
> consistently work. The first call does some server side saving to db
> etc. (I have a number of functions that do other stuff), but then I
> want an image to change according to the state of a particular object
> that has just been altered in the first call. Obviously the second
> function therefore needs to be called when the first one has ''done
its
> stuff'' and the object is in a new state. However, the second
function
> doesn''t always get fired at the completion of the first one - it
> appears sometimes to get fired just before the end and therefore when
> it looks at the latest state of the object to then get the correct
> image to reflect the state, it hasn''t been fully saved to the db
and
> the old state is retrieved resulting in the wrong image being shown. I
> can see that the second function is called before the end of the first
> when I look at the request in firebug (firefox extension).
>
> Can anyone suggest anything else I could try??
>
> Thanks
> Conrad
>
>
> >
>

-- 
-----
Richard Quadling
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
"Standing on the shoulders of some very clever giants!"

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Richard Quadling

2007-Oct-02 15:25 UTC

head link

Re: Prototype onComplete callback not working consistently

On 02/10/2007, Richard Quadling
<rquadling-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:> Add an onException responder to see if that is causing a problem ...
>
> Ajax.Responders.register({onException:function(o_Requester,
> o_Exception, o_JSON){console.info(o_Requester, o_Exception,
> o_JSON);}});
>
> Put that at the top of your script and then run it all again. Anything
> going wrong within the Ajax calls should be reported to firebug''s
> console.
>
>
>
> On 02/10/2007, cc_humbry
<conrad.crampton-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > Hi,
> > I have read a number of the post in this group that suggest others are
> > having probs too with this and tried (I think) all of the suggestions
> > offered but still have a problem.
> >
> > The following code ..
> >
> > function actionMailbox(id, status, numberMailboxes) {
> >         lastMailboxId = id;
> >         var pars = "?action=actionMailbox&mailboxId=" +
id +
> > "&mailboxStatus=" + status;
> >         new Ajax.Updater(
> >                 ''messageBox'',
> >                 ''/anonymail/messageManager.do'' ,
> >                 {
> >                         method: ''get'',
> >                         parameters: pars,
> >                         onComplete: function () {
updateMailboxImage();}
> >                 }
> >         );
> > }
> >
> > function updateMailboxImage() {
> >         var pars = "?action=updateImage&mailboxId=" +
lastMailboxId;
> >         new Ajax.Updater(
> >                 ''mailbox_'' + lastMailboxId,
> >                 ''/anonymail/messageManager.do'' ,
> >                 {
> >                         method: ''get'',
> >                         parameters: pars
> >                 }
> >         );
> > }
> >
> > works for the first function, but the onComplete function call
doesn''t
> > consistently work. The first call does some server side saving to db
> > etc. (I have a number of functions that do other stuff), but then I
> > want an image to change according to the state of a particular object
> > that has just been altered in the first call. Obviously the second
> > function therefore needs to be called when the first one has
''done its
> > stuff'' and the object is in a new state. However, the second
function
> > doesn''t always get fired at the completion of the first one -
it
> > appears sometimes to get fired just before the end and therefore when
> > it looks at the latest state of the object to then get the correct
> > image to reflect the state, it hasn''t been fully saved to the
db and
> > the old state is retrieved resulting in the wrong image being shown. I
> > can see that the second function is called before the end of the first
> > when I look at the request in firebug (firefox extension).
> >
> > Can anyone suggest anything else I could try??
> >
> > Thanks
> > Conrad
Here is my AJAX.onException responder for all my code ...

Ajax.Responders.register({
	onException: function(o_Requester, o_Exception, o_JSON){
		if (!isNull(o_AjaxReport)) {
			o_AjaxReport.update(
				''<span class="MErrors_SPAN">'' +
				''Error : '' + o_Exception.message + ''<br
/>'' +
				((typeof o_Exception.fileName != ''undefined'') ?
''File : '' +
o_Exception.fileName + ''<br />'' : '''')
+
				((typeof o_Exception.lineNumber != ''undefined'') ?
''Line : '' +
o_Exception.lineNumber + ''<br />'' :
'''') +
				''</span><br />'' +
				o_Requester.transport.responseText + ''<br />''
			);
			o_AjaxReport.className = ''MAction_Failure_TH''
		);
	}
});


I have a global <div id="ajaxReport" /> which I grab using
o_AjaxReport = $(''ajaxReport'');

Now ALL ajax exceptions are reported on screen (Ok, I''ve cut the above
code RIGHT down to allow it to be easier to read).


-- 
-----
Richard Quadling
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
"Standing on the shoulders of some very clever giants!"

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Tobie Langel

2007-Oct-02 17:02 UTC

head link

Re: Prototype onComplete callback not working consistently

Get firebug!



On Oct 2, 5:25 pm, "Richard Quadling"
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:> On 02/10/2007, Richard Quadling
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>
>
>
> > Add an onException responder to see if that is causing a problem ...
>
> > Ajax.Responders.register({onException:function(o_Requester,
> > o_Exception, o_JSON){console.info(o_Requester, o_Exception,
> > o_JSON);}});
>
> > Put that at the top of your script and then run it all again. Anything
> > going wrong within the Ajax calls should be reported to
firebug''s
> > console.
>
> > On 02/10/2007, cc_humbry
<conrad.cramp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > > Hi,
> > > I have read a number of the post in this group that suggest
others are
> > > having probs too with this and tried (I think) all of the
suggestions
> > > offered but still have a problem.
>
> > > The following code ..
>
> > > function actionMailbox(id, status, numberMailboxes) {
> > >         lastMailboxId = id;
> > >         var pars =
"?action=actionMailbox&mailboxId=" + id +
> > > "&mailboxStatus=" + status;
> > >         new Ajax.Updater(
> > >                 ''messageBox'',
> > >                 ''/anonymail/messageManager.do''
,
> > >                 {
> > >                         method: ''get'',
> > >                         parameters: pars,
> > >                         onComplete: function () {
updateMailboxImage();}
> > >                 }
> > >         );
> > > }
>
> > > function updateMailboxImage() {
> > >         var pars = "?action=updateImage&mailboxId="
+ lastMailboxId;
> > >         new Ajax.Updater(
> > >                 ''mailbox_'' + lastMailboxId,
> > >                 ''/anonymail/messageManager.do''
,
> > >                 {
> > >                         method: ''get'',
> > >                         parameters: pars
> > >                 }
> > >         );
> > > }
>
> > > works for the first function, but the onComplete function call
doesn''t
> > > consistently work. The first call does some server side saving to
db
> > > etc. (I have a number of functions that do other stuff), but then
I
> > > want an image to change according to the state of a particular
object
> > > that has just been altered in the first call. Obviously the
second
> > > function therefore needs to be called when the first one has
''done its
> > > stuff'' and the object is in a new state. However, the
second function
> > > doesn''t always get fired at the completion of the first
one - it
> > > appears sometimes to get fired just before the end and therefore
when
> > > it looks at the latest state of the object to then get the
correct
> > > image to reflect the state, it hasn''t been fully saved
to the db and
> > > the old state is retrieved resulting in the wrong image being
shown. I
> > > can see that the second function is called before the end of the
first
> > > when I look at the request in firebug (firefox extension).
>
> > > Can anyone suggest anything else I could try??
>
> > > Thanks
> > > Conrad
>
> Here is my AJAX.onException responder for all my code ...
>
> Ajax.Responders.register({
>         onException: function(o_Requester, o_Exception, o_JSON){
>                 if (!isNull(o_AjaxReport)) {
>                         o_AjaxReport.update(
>                                 ''<span
class="MErrors_SPAN">'' +
>                                 ''Error : '' +
o_Exception.message + ''<br />'' +
>                                 ((typeof o_Exception.fileName !=
''undefined'') ? ''File : '' +
> o_Exception.fileName + ''<br />'' :
'''') +
>                                 ((typeof o_Exception.lineNumber !=
''undefined'') ? ''Line : '' +
> o_Exception.lineNumber + ''<br />'' :
'''') +
>                                 ''</span><br
/>'' +
>                                 o_Requester.transport.responseText +
''<br />''
>                         );
>                         o_AjaxReport.className =
''MAction_Failure_TH''
>                 );
>         }
>
> });
>
> I have a global <div id="ajaxReport" /> which I grab using
> o_AjaxReport = $(''ajaxReport'');
>
> Now ALL ajax exceptions are reported on screen (Ok, I''ve cut the
above
> code RIGHT down to allow it to be easier to read).
>
> --
> -----
> Richard Quadling
> Zend Certified Engineer
:http://zend.com/zce.php?c=ZEND002498&r=213474731
> "Standing on the shoulders of some very clever giants!"

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Brian Williams

2007-Oct-02 18:51 UTC

head link

Re: Prototype onComplete callback not working consistently

or if you insist on doing all of your designing for IE whatever get Fiddler
http://www.fiddlertool.com/fiddler/ and IEDevToolbar - both free downloads.

but i recommend firebug for AJAX debugging and IEDevToolbar for debugging
CSS in IE



On 10/2/07, Tobie Langel
<tobie.langel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
>
> Get firebug!
>
>
>
> On Oct 2, 5:25 pm, "Richard Quadling"
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
> wrote:
> > On 02/10/2007, Richard Quadling
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> >
> >
> >
> > > Add an onException responder to see if that is causing a problem
...
> >
> > > Ajax.Responders.register({onException:function(o_Requester,
> > > o_Exception, o_JSON){console.info(o_Requester, o_Exception,
> > > o_JSON);}});
> >
> > > Put that at the top of your script and then run it all again.
Anything
> > > going wrong within the Ajax calls should be reported to
firebug''s
> > > console.
> >
> > > On 02/10/2007, cc_humbry
<conrad.cramp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > > > Hi,
> > > > I have read a number of the post in this group that suggest
others
> are
> > > > having probs too with this and tried (I think) all of the
> suggestions
> > > > offered but still have a problem.
> >
> > > > The following code ..
> >
> > > > function actionMailbox(id, status, numberMailboxes) {
> > > >         lastMailboxId = id;
> > > >         var pars =
"?action=actionMailbox&mailboxId=" + id +
> > > > "&mailboxStatus=" + status;
> > > >         new Ajax.Updater(
> > > >                 ''messageBox'',
> > > >                
''/anonymail/messageManager.do'' ,
> > > >                 {
> > > >                         method: ''get'',
> > > >                         parameters: pars,
> > > >                         onComplete: function () {
> updateMailboxImage();}
> > > >                 }
> > > >         );
> > > > }
> >
> > > > function updateMailboxImage() {
> > > >         var pars =
"?action=updateImage&mailboxId=" + lastMailboxId;
> > > >         new Ajax.Updater(
> > > >                 ''mailbox_'' +
lastMailboxId,
> > > >                
''/anonymail/messageManager.do'' ,
> > > >                 {
> > > >                         method: ''get'',
> > > >                         parameters: pars
> > > >                 }
> > > >         );
> > > > }
> >
> > > > works for the first function, but the onComplete function
call
> doesn''t
> > > > consistently work. The first call does some server side
saving to db
> > > > etc. (I have a number of functions that do other stuff), but
then I
> > > > want an image to change according to the state of a
particular
> object
> > > > that has just been altered in the first call. Obviously the
second
> > > > function therefore needs to be called when the first one has
''done
> its
> > > > stuff'' and the object is in a new state. However,
the second
> function
> > > > doesn''t always get fired at the completion of the
first one - it
> > > > appears sometimes to get fired just before the end and
therefore
> when
> > > > it looks at the latest state of the object to then get the
correct
> > > > image to reflect the state, it hasn''t been fully
saved to the db and
> > > > the old state is retrieved resulting in the wrong image
being shown.
> I
> > > > can see that the second function is called before the end of
the
> first
> > > > when I look at the request in firebug (firefox extension).
> >
> > > > Can anyone suggest anything else I could try??
> >
> > > > Thanks
> > > > Conrad
> >
> > Here is my AJAX.onException responder for all my code ...
> >
> > Ajax.Responders.register({
> >         onException: function(o_Requester, o_Exception, o_JSON){
> >                 if (!isNull(o_AjaxReport)) {
> >                         o_AjaxReport.update(
> >                                 ''<span
class="MErrors_SPAN">'' +
> >                                 ''Error : '' +
o_Exception.message + ''<br
> />'' +
> >                                 ((typeof o_Exception.fileName !>
''undefined'') ? ''File : '' +
> > o_Exception.fileName + ''<br />'' :
'''') +
> >                                 ((typeof o_Exception.lineNumber !>
''undefined'') ? ''Line : '' +
> > o_Exception.lineNumber + ''<br />'' :
'''') +
> >                                 ''</span><br
/>'' +
> >                                 o_Requester.transport.responseText +
> ''<br />''
> >                         );
> >                         o_AjaxReport.className =
''MAction_Failure_TH''
> >                 );
> >         }
> >
> > });
> >
> > I have a global <div id="ajaxReport" /> which I grab
using
> > o_AjaxReport = $(''ajaxReport'');
> >
> > Now ALL ajax exceptions are reported on screen (Ok, I''ve cut
the above
> > code RIGHT down to allow it to be easier to read).
> >
> > --
> > -----
> > Richard Quadling
> > Zend Certified Engineer :
> http://zend.com/zce.php?c=ZEND002498&r=213474731
> > "Standing on the shoulders of some very clever giants!"
>
>
> >
>
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cc_humbry

2007-Oct-03 13:00 UTC

head link

Re: Prototype onComplete callback not working consistently

already using firebug.
the suggestions offered around using an ''onException'' handler
are
welcome thanks. However, have done this and still no further forward
as no exceptions are being thrown. I am at the point of believing this
is an issue with the way the database is being updated with hibernate/
struts etc. and that the db isn''t actually getting the data committed
even when the ajax request has (as far as it is concerned) completed.
I don''t understand how this can be, but the http requests are showing
as being consecutive (in firebug for the main part), the logs files of
my application are showing hibernate logging later than the log
messages that are produced by the second ajax request.

Complete mystery for me.

I have got around this issue for the shortterm by returning the
javascript function call along with the reponse html from the first
ajax call, that calls the second ajax request, but having this as
setTimout(''updateMailboxImage'', 1000) so giving the db time to
update.
Obviously not the way I would like this to be done but getting too
frustrated with trying to get this work with the ''onComplete''
callback
function

I anyone can add anything further to this issue please feel free to
comment - I will give anything a go  ;-)

Conrad

On Oct 2, 7:51 pm, "Brian Williams"
<brianw1...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> or if you insist on doing all of your designing for IE whatever get
Fiddlerhttp://www.fiddlertool.com/fiddler/and IEDevToolbar - both free
downloads.
>
> but i recommend firebug for AJAX debugging and IEDevToolbar for debugging
> CSS in IE
>
> On 10/2/07, Tobie Langel
<tobie.lan...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>
>
> > Get firebug!
>
> > On Oct 2, 5:25 pm, "Richard Quadling"
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
> > wrote:
> > > On 02/10/2007, Richard Quadling
<rquadl...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>
> > > > Add an onException responder to see if that is causing a
problem ...
>
> > > > Ajax.Responders.register({onException:function(o_Requester,
> > > > o_Exception, o_JSON){console.info(o_Requester, o_Exception,
> > > > o_JSON);}});
>
> > > > Put that at the top of your script and then run it all
again. Anything
> > > > going wrong within the Ajax calls should be reported to
firebug''s
> > > > console.
>
> > > > On 02/10/2007, cc_humbry
<conrad.cramp...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > > > > Hi,
> > > > > I have read a number of the post in this group that
suggest others
> > are
> > > > > having probs too with this and tried (I think) all of
the
> > suggestions
> > > > > offered but still have a problem.
>
> > > > > The following code ..
>
> > > > > function actionMailbox(id, status, numberMailboxes) {
> > > > >         lastMailboxId = id;
> > > > >         var pars =
"?action=actionMailbox&mailboxId=" + id +
> > > > > "&mailboxStatus=" + status;
> > > > >         new Ajax.Updater(
> > > > >                 ''messageBox'',
> > > > >                
''/anonymail/messageManager.do'' ,
> > > > >                 {
> > > > >                         method:
''get'',
> > > > >                         parameters: pars,
> > > > >                         onComplete: function () {
> > updateMailboxImage();}
> > > > >                 }
> > > > >         );
> > > > > }
>
> > > > > function updateMailboxImage() {
> > > > >         var pars =
"?action=updateImage&mailboxId=" + lastMailboxId;
> > > > >         new Ajax.Updater(
> > > > >                 ''mailbox_'' +
lastMailboxId,
> > > > >                
''/anonymail/messageManager.do'' ,
> > > > >                 {
> > > > >                         method:
''get'',
> > > > >                         parameters: pars
> > > > >                 }
> > > > >         );
> > > > > }
>
> > > > > works for the first function, but the onComplete
function call
> > doesn''t
> > > > > consistently work. The first call does some server side
saving to db
> > > > > etc. (I have a number of functions that do other
stuff), but then I
> > > > > want an image to change according to the state of a
particular
> > object
> > > > > that has just been altered in the first call. Obviously
the second
> > > > > function therefore needs to be called when the first
one has ''done
> > its
> > > > > stuff'' and the object is in a new state.
However, the second
> > function
> > > > > doesn''t always get fired at the completion of
the first one - it
> > > > > appears sometimes to get fired just before the end and
therefore
> > when
> > > > > it looks at the latest state of the object to then get
the correct
> > > > > image to reflect the state, it hasn''t been
fully saved to the db and
> > > > > the old state is retrieved resulting in the wrong image
being shown.
> > I
> > > > > can see that the second function is called before the
end of the
> > first
> > > > > when I look at the request in firebug (firefox
extension).
>
> > > > > Can anyone suggest anything else I could try??
>
> > > > > Thanks
> > > > > Conrad
>
> > > Here is my AJAX.onException responder for all my code ...
>
> > > Ajax.Responders.register({
> > >         onException: function(o_Requester, o_Exception, o_JSON){
> > >                 if (!isNull(o_AjaxReport)) {
> > >                         o_AjaxReport.update(
> > >                                 ''<span
class="MErrors_SPAN">'' +
> > >                                 ''Error : '' +
o_Exception.message + ''<br
> > />'' +
> > >                                 ((typeof o_Exception.fileName
!> > ''undefined'') ? ''File : '' +
> > > o_Exception.fileName + ''<br />'' :
'''') +
> > >                                 ((typeof o_Exception.lineNumber
!> > ''undefined'') ? ''Line : '' +
> > > o_Exception.lineNumber + ''<br />'' :
'''') +
> > >                                 ''</span><br
/>'' +
> > >                                
o_Requester.transport.responseText +
> > ''<br />''
> > >                         );
> > >                         o_AjaxReport.className =
''MAction_Failure_TH''
> > >                 );
> > >         }
>
> > > });
>
> > > I have a global <div id="ajaxReport" /> which I
grab using
> > > o_AjaxReport = $(''ajaxReport'');
>
> > > Now ALL ajax exceptions are reported on screen (Ok, I''ve
cut the above
> > > code RIGHT down to allow it to be easier to read).
>
> > > --
> > > -----
> > > Richard Quadling
> > > Zend Certified Engineer :
> >http://zend.com/zce.php?c=ZEND002498&r=213474731
> > > "Standing on the shoulders of some very clever giants!"

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Rails spinoffs - Oct 2007 - Prototype onComplete callback not working consistently

Prototype onComplete callback not working consistently

Re: Prototype onComplete callback not working consistently

Re: Prototype onComplete callback not working consistently

Re: Prototype onComplete callback not working consistently

Re: Prototype onComplete callback not working consistently

Re: Prototype onComplete callback not working consistently