RE: Struts action call in a JS method returns blank page
I promised that I'd report back with the eventual solution, so here goes. There were quite a few problems that I ended up finding along the way, but the most important one was that I was trying to feed form element values as arguments to a JS function, and the form hadn't been submitted yet at that point, so I was always getting null. Instead, I parsed the query from the URL and got the values I needed from there and that did what I needed. I can provide some more details off-line if anyone wants them, but since this was sort of an off-topic thread to begin with, I don't want to waste everyone's time. Thanks again for everyone's help on this! Chris -Original Message- From: Christopher Loschen [mailto:[EMAIL PROTECTED] Sent: Monday, February 12, 2007 9:46 PM To: Struts Users Mailing List Subject: RE: Struts action call in a JS method returns blank page Thanks again for your help. I checked the innerHTML code and it does refer to innerHTML, not innerHtml as I mistakenly remembered. My code all does appear to be inside functions. What I've done at this point is reverted to the code that existed before, and the JS is now working (I think -- more testing needed). The difference there is that the code was manipulating strings and appending them directly onto the URL and I was trying to do the same thing with form elements. I still think my approach would be cleaner, but it isn't working so I'm willing to admit defeat. The next problem is actually getting these URL attributes into my Struts action form, so I think I'm returning to a more or less on-topic question! The script did just change the location without submitting the form, so that wasn't working. I added a branch for the situation when I did need to submit the form for Struts which takes the same data that was being added to the URL and sets it up as form fields instead. That is working for two of the three sets, but not the third. For that one, I keep getting [object] or [undefined] or something like that instead of the (possibly empty) string I expect. I tried setting up a hidden field in the form to hold the property I needed, but that didn't help. One thing I haven't tried yet is to initialize the value of the property in that hidden field, something along the lines of html:hidden property=checkboxes_across value=/ I have the property now, but not the value attribute. Worth a try, I guess. I feel like I'm almost there, but it's taking much longer than I had hoped. Oh well. Thanks again for your help, everyone. If you have any more suggestions, I'm happy to hear them. I'll report back when I finally do figure it all out. Chris -Original Message- From: Christopher Loschen [mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] ] Sent: Sunday, February 11, 2007 5:25 PM To: Struts Users Mailing List Subject: RE: Struts action call in a JS method returns blank page Yeah, that's why I was suspicious. I'm not sure what the code is doing, but it was there before I got there. On the other hand, before I started mucking with the code, it was working enough that it usually kept the correct boxes checked when I changed pages -- it just didn't get the checked boxes that weren't on the current page saved to the Struts form. My best bet might be to revert to the JS that was working and try to figure out the other problems instead. Chris From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] ] Sent: Sun 2/11/2007 10:14 AM To: Struts Users Mailing List Subject: Re: Struts action call in a JS method returns blank page Christopher Loschen wrote: I'm suspicious of some code elsewhere on the page that reloads the entire page -- I don't have it in front of me right now, but it goes something like: Woah, are you saying the form your trying to work with was dynamically inserted into the page via innerHTML? If so, the problem you may be encountering is that content inserted with innerHTML isn't necessarily added to the DOM at all. I've frankly never spent the time to determine the pattern, but I know there are some instances, in one browser or another, where the DOM isn't updated, and other times it is. I typically just avoid using innerHTML to insert anything I know I'm going to want to access later : Frank - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts action call in a JS method returns blank page
Thanks again for your help. I checked the innerHTML code and it does refer to innerHTML, not innerHtml as I mistakenly remembered. My code all does appear to be inside functions. What I've done at this point is reverted to the code that existed before, and the JS is now working (I think -- more testing needed). The difference there is that the code was manipulating strings and appending them directly onto the URL and I was trying to do the same thing with form elements. I still think my approach would be cleaner, but it isn't working so I'm willing to admit defeat. The next problem is actually getting these URL attributes into my Struts action form, so I think I'm returning to a more or less on-topic question! The script did just change the location without submitting the form, so that wasn't working. I added a branch for the situation when I did need to submit the form for Struts which takes the same data that was being added to the URL and sets it up as form fields instead. That is working for two of the three sets, but not the third. For that one, I keep getting [object] or [undefined] or something like that instead of the (possibly empty) string I expect. I tried setting up a hidden field in the form to hold the property I needed, but that didn't help. One thing I haven't tried yet is to initialize the value of the property in that hidden field, something along the lines of html:hidden property=checkboxes_across value=/ I have the property now, but not the value attribute. Worth a try, I guess. I feel like I'm almost there, but it's taking much longer than I had hoped. Oh well. Thanks again for your help, everyone. If you have any more suggestions, I'm happy to hear them. I'll report back when I finally do figure it all out. Chris -Original Message- From: Christopher Loschen [mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] ] Sent: Sunday, February 11, 2007 5:25 PM To: Struts Users Mailing List Subject: RE: Struts action call in a JS method returns blank page Yeah, that's why I was suspicious. I'm not sure what the code is doing, but it was there before I got there. On the other hand, before I started mucking with the code, it was working enough that it usually kept the correct boxes checked when I changed pages -- it just didn't get the checked boxes that weren't on the current page saved to the Struts form. My best bet might be to revert to the JS that was working and try to figure out the other problems instead. Chris From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] ] Sent: Sun 2/11/2007 10:14 AM To: Struts Users Mailing List Subject: Re: Struts action call in a JS method returns blank page Christopher Loschen wrote: I'm suspicious of some code elsewhere on the page that reloads the entire page -- I don't have it in front of me right now, but it goes something like: Woah, are you saying the form your trying to work with was dynamically inserted into the page via innerHTML? If so, the problem you may be encountering is that content inserted with innerHTML isn't necessarily added to the DOM at all. I've frankly never spent the time to determine the pattern, but I know there are some instances, in one browser or another, where the DOM isn't updated, and other times it is. I typically just avoid using innerHTML to insert anything I know I'm going to want to access later : Frank - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts action call in a JS method returns blank page
Thanks, I'll try it. I did manage to get past crashing FF by changing
var boxesAcross = checkForm.elements['checkbox_ids_across'].value;
to
var boxesAcross = checkForm.elements['checkbox_ids_across'];
I'm not quite sure why that helped, but it did. Now it gets through the method
ok, but still doesn't produce any results because it still thinks that the form
doesn't have any elements. I've actually already moved a lot closer to using
string manipulation rather than arrays, but I don't seem to be able to get past
that initial problem so that the changed code ever fires in the first place.
I'm suspicious of some code elsewhere on the page that reloads the entire page
-- I don't have it in front of me right now, but it goes something like:
parent.document.resultDiv.innerHtml = document.resultDivTemp.innerHtml;
I wonder if that's screwing me up somehow so that I'm getting a form from the
wrong document or something.
Another possibility is that the button I'm pressing to move from page to page
appears on the page BEFORE the form appears (above it vertically) and so the
form might not yet be fully defined at that point on the page, but that doesn't
make sense to me either, because if that were a problem, then there's no way I
could ever use a control that appears earlier on the page than a form, and I
see that on websites all the time.
A third possibility is that I need an onclick attribute on the checkboxes to
capture them getting clicked, but that doesn't entirely make sense either. If
that were the problem, I would expect to see the elements found in the form,
just without values (as I do see in the other method), but I'm seeing a form
with no elements at all.
I'll keep reading up on it today and see if I can come up with something else
to try. Thanks for your help -- if you have any more suggestions, I'll be happy
to give them a try.
Chris
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Sun 2/11/2007 12:11 AM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Is there a reason you have to use the collection? Could you rewrite
this to go after specific ID's? If so, I'd suggest trying that. Just a
hunch...
Christopher Loschen wrote:
I may be getting way off-topic at this point -- sorry about that. I'm
not sure where to ask these sorts of questions.
I now seem to be crashing Firebug and Firefox underneath it every time I
run it. I walk through the method line by line:
function addCheckBoxValuesToForm(locationStr) {
var checkForm = document.forms['checkbox-form'];
if (checkForm) {
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var boxesAcross = checkForm.elements['checkbox_ids_across'].value;
On that last line, everything crashes and I get the message that
Firefox has to close -- sorry for the inconvenience and tell Microsoft
about it so we can gloat. (or something like that ;).
On the previous lines, I did find a checkForm correctly, so it does find
the correct form, but the array of elements for the form is showing up
as empty. I suppose I could test if boxesAcross is null before trying to
get its value, but it shouldn't be null to begin with.
The especially strange thing is that this method is running fine:
function checkSelectedCheckBoxes() {
var checkForm = document.forms['checkbox-form'];
if (checkForm) {
var selectedCheckBoxValues =
checkForm.elements['checkbox_ids_across'].value;
// if there are no check boxes then just ignore
if(selectedCheckBoxValues == '') {
return ;
}
This is called against the same form as the first one, and looks for the
same input element inside it. When the second one is called, there isn't
anything in that element yet so we just return, and the rest of the
method (which I haven't included here) doesn't run, but that's correct.
When the second method runs, it finds the same form in the same way, but
it also finds all of the elements inside it. I'm not sure what could be
different between them. I'm tearing my hair out!!!
Any insights?
Chris
-Original Message-
From: Christopher Loschen [mailto:[EMAIL PROTECTED]
Sent: Friday, February 09, 2007 4:32 PM
To: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
OK, I've installed Firebug and also Firefox (a good thing since we
support it anyway, so it's good to have it on my system). It did find
some stuff I missed right away including the JS error on page load
(which turned out to be in a method I hadn't showed you -- oops!).
But I'm still not getting any results, and I'm not sure why. My JS
function gets the form OK and the action, name, etc. are all correct.
But the form in the debugger has no elements and no child nodes, while
my form on the page has this code:
input type=hidden name=checkbox_ids_across value
[OT] RE: Struts action call in a JS method returns blank page
--- Christopher Loschen [EMAIL PROTECTED] wrote: parent.document.resultDiv.innerHtml = document.resultDivTemp.innerHtml; I know that was from memory, but IIRC it's innerHTML, so just in case. Another possibility is that the button I'm pressing to move from page to page appears on the page BEFORE the form appears (above it vertically) and so the form might not yet be fully defined at that point on the page, but that doesn't make sense to me either, because if that were a problem, then there's no way I could ever use a control that appears earlier on the page than a form, and I see that on websites all the time. Just bear in mind that any Javascript that isn't executing within a function is called in the order it's loaded, so if you have naked Javascript before the form is on the page it will fail: script var foo = document.form.uhoh.value; /script form name=uhoh.../ Nope. In any case, what you're doing probably shouldn't crash Firefox/Firebug, so I'd file a ticket once you reproduce a minimal testcase. I'd still like to know what happens if you ask for var boxesAcross = checkForm.elements['checkbox_ids_across'].value; in the Firebug console, though. d. Be a PS3 game guru. Get your game face on with the latest PS3 news and previews at Yahoo! Games. http://videogames.yahoo.com/platform?platform=120121 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts action call in a JS method returns blank page
Christopher Loschen wrote: I'm suspicious of some code elsewhere on the page that reloads the entire page -- I don't have it in front of me right now, but it goes something like: Woah, are you saying the form your trying to work with was dynamically inserted into the page via innerHTML? If so, the problem you may be encountering is that content inserted with innerHTML isn't necessarily added to the DOM at all. I've frankly never spent the time to determine the pattern, but I know there are some instances, in one browser or another, where the DOM isn't updated, and other times it is. I typically just avoid using innerHTML to insert anything I know I'm going to want to access later : Frank - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [OT] RE: Struts action call in a JS method returns blank page
Thanks Dave, I'm sure that innerHTML was my faulty memory since I didn't write that code and haven't touched it, but I will double-check tomorrow. Thanks for the other ideas too -- I think all the relevant code is inside a function but I'm not entirely sure, so I'll double-check that too. Chris From: Dave Newton [mailto:[EMAIL PROTECTED] Sent: Sun 2/11/2007 9:21 AM To: Struts Users Mailing List Subject: [OT] RE: Struts action call in a JS method returns blank page --- Christopher Loschen [EMAIL PROTECTED] wrote: parent.document.resultDiv.innerHtml = document.resultDivTemp.innerHtml; I know that was from memory, but IIRC it's innerHTML, so just in case. Another possibility is that the button I'm pressing to move from page to page appears on the page BEFORE the form appears (above it vertically) and so the form might not yet be fully defined at that point on the page, but that doesn't make sense to me either, because if that were a problem, then there's no way I could ever use a control that appears earlier on the page than a form, and I see that on websites all the time. Just bear in mind that any Javascript that isn't executing within a function is called in the order it's loaded, so if you have naked Javascript before the form is on the page it will fail: script var foo = document.form.uhoh.value; /script form name=uhoh.../ Nope. In any case, what you're doing probably shouldn't crash Firefox/Firebug, so I'd file a ticket once you reproduce a minimal testcase. I'd still like to know what happens if you ask for var boxesAcross = checkForm.elements['checkbox_ids_across'].value; in the Firebug console, though. d. Be a PS3 game guru. Get your game face on with the latest PS3 news and previews at Yahoo! Games. http://videogames.yahoo.com/platform?platform=120121 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts action call in a JS method returns blank page
Yeah, that's why I was suspicious. I'm not sure what the code is doing, but it was there before I got there. On the other hand, before I started mucking with the code, it was working enough that it usually kept the correct boxes checked when I changed pages -- it just didn't get the checked boxes that weren't on the current page saved to the Struts form. My best bet might be to revert to the JS that was working and try to figure out the other problems instead. Chris From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] Sent: Sun 2/11/2007 10:14 AM To: Struts Users Mailing List Subject: Re: Struts action call in a JS method returns blank page Christopher Loschen wrote: I'm suspicious of some code elsewhere on the page that reloads the entire page -- I don't have it in front of me right now, but it goes something like: Woah, are you saying the form your trying to work with was dynamically inserted into the page via innerHTML? If so, the problem you may be encountering is that content inserted with innerHTML isn't necessarily added to the DOM at all. I've frankly never spent the time to determine the pattern, but I know there are some instances, in one browser or another, where the DOM isn't updated, and other times it is. I typically just avoid using innerHTML to insert anything I know I'm going to want to access later : Frank - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts action call in a JS method returns blank page
I may be getting way off-topic at this point -- sorry about that. I'm
not sure where to ask these sorts of questions.
I now seem to be crashing Firebug and Firefox underneath it every time I
run it. I walk through the method line by line:
function addCheckBoxValuesToForm(locationStr) {
var checkForm = document.forms['checkbox-form'];
if (checkForm) {
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var boxesAcross = checkForm.elements['checkbox_ids_across'].value;
On that last line, everything crashes and I get the message that
Firefox has to close -- sorry for the inconvenience and tell Microsoft
about it so we can gloat. (or something like that ;).
On the previous lines, I did find a checkForm correctly, so it does find
the correct form, but the array of elements for the form is showing up
as empty. I suppose I could test if boxesAcross is null before trying to
get its value, but it shouldn't be null to begin with.
The especially strange thing is that this method is running fine:
function checkSelectedCheckBoxes() {
var checkForm = document.forms['checkbox-form'];
if (checkForm) {
var selectedCheckBoxValues =
checkForm.elements['checkbox_ids_across'].value;
// if there are no check boxes then just ignore
if(selectedCheckBoxValues == '') {
return ;
}
This is called against the same form as the first one, and looks for the
same input element inside it. When the second one is called, there isn't
anything in that element yet so we just return, and the rest of the
method (which I haven't included here) doesn't run, but that's correct.
When the second method runs, it finds the same form in the same way, but
it also finds all of the elements inside it. I'm not sure what could be
different between them. I'm tearing my hair out!!!
Any insights?
Chris
-Original Message-
From: Christopher Loschen [mailto:[EMAIL PROTECTED]
Sent: Friday, February 09, 2007 4:32 PM
To: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
OK, I've installed Firebug and also Firefox (a good thing since we
support it anyway, so it's good to have it on my system). It did find
some stuff I missed right away including the JS error on page load
(which turned out to be in a method I hadn't showed you -- oops!).
But I'm still not getting any results, and I'm not sure why. My JS
function gets the form OK and the action, name, etc. are all correct.
But the form in the debugger has no elements and no child nodes, while
my form on the page has this code:
input type=hidden name=checkbox_ids_across value=
...
input type=checkbox name=checkboxes value=32
Etc.
So I would expect I would have at least a string for checkbox_ids_across
and an array of strings for the checkboxes. Is that right? I must be
missing something.
The bit of code I'm looking at so far is:
function addCheckBoxValuesToForm(locationStr)
{
var form = document.forms['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Friday, February 09, 2007 3:35 PM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Yeah, as musachy suggests, Firebug is your friend :) I personally tend
to code my JS to always go after specific IDs rather than using any of
the common collections... that usually works just fine as long as you
don't have multiple dynamic forms.
Frank
Christopher Loschen wrote:
Happy to provide an opportunity for self-promotion :-)!
I think you're right about dropping the params somewhere. I've been
trying today to set up a new approach, which seems simpler to me, but
which is still fighting me. The basic idea is to use the form to hold
the array of values I need rather than just sticking them up onto the
URL. To that end, I rewrote the JS function like this:
function addCheckBoxValuesToForm(locationStr)
{
var form = document['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
if (checkboxes)
{
var checkStr = new Array();
var uncheckedStr = new Array();
// If the no.of checkboxes is one then converting the checkbox
object
Re: Struts action call in a JS method returns blank page
Is there a reason you have to use the collection? Could you rewrite
this to go after specific ID's? If so, I'd suggest trying that. Just a
hunch...
Christopher Loschen wrote:
I may be getting way off-topic at this point -- sorry about that. I'm
not sure where to ask these sorts of questions.
I now seem to be crashing Firebug and Firefox underneath it every time I
run it. I walk through the method line by line:
function addCheckBoxValuesToForm(locationStr) {
var checkForm = document.forms['checkbox-form'];
if (checkForm) {
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var boxesAcross = checkForm.elements['checkbox_ids_across'].value;
On that last line, everything crashes and I get the message that
Firefox has to close -- sorry for the inconvenience and tell Microsoft
about it so we can gloat. (or something like that ;).
On the previous lines, I did find a checkForm correctly, so it does find
the correct form, but the array of elements for the form is showing up
as empty. I suppose I could test if boxesAcross is null before trying to
get its value, but it shouldn't be null to begin with.
The especially strange thing is that this method is running fine:
function checkSelectedCheckBoxes() {
var checkForm = document.forms['checkbox-form'];
if (checkForm) {
var selectedCheckBoxValues =
checkForm.elements['checkbox_ids_across'].value;
// if there are no check boxes then just ignore
if(selectedCheckBoxValues == '') {
return ;
}
This is called against the same form as the first one, and looks for the
same input element inside it. When the second one is called, there isn't
anything in that element yet so we just return, and the rest of the
method (which I haven't included here) doesn't run, but that's correct.
When the second method runs, it finds the same form in the same way, but
it also finds all of the elements inside it. I'm not sure what could be
different between them. I'm tearing my hair out!!!
Any insights?
Chris
-Original Message-
From: Christopher Loschen [mailto:[EMAIL PROTECTED]
Sent: Friday, February 09, 2007 4:32 PM
To: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
OK, I've installed Firebug and also Firefox (a good thing since we
support it anyway, so it's good to have it on my system). It did find
some stuff I missed right away including the JS error on page load
(which turned out to be in a method I hadn't showed you -- oops!).
But I'm still not getting any results, and I'm not sure why. My JS
function gets the form OK and the action, name, etc. are all correct.
But the form in the debugger has no elements and no child nodes, while
my form on the page has this code:
input type=hidden name=checkbox_ids_across value=
...
input type=checkbox name=checkboxes value=32
Etc.
So I would expect I would have at least a string for checkbox_ids_across
and an array of strings for the checkboxes. Is that right? I must be
missing something.
The bit of code I'm looking at so far is:
function addCheckBoxValuesToForm(locationStr)
{
var form = document.forms['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Friday, February 09, 2007 3:35 PM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Yeah, as musachy suggests, Firebug is your friend :) I personally tend
to code my JS to always go after specific IDs rather than using any of
the common collections... that usually works just fine as long as you
don't have multiple dynamic forms.
Frank
Christopher Loschen wrote:
Happy to provide an opportunity for self-promotion :-)!
I think you're right about dropping the params somewhere. I've been
trying today to set up a new approach, which seems simpler to me, but
which is still fighting me. The basic idea is to use the form to hold
the array of values I need rather than just sticking them up onto the
URL. To that end, I rewrote the JS function like this:
function addCheckBoxValuesToForm(locationStr)
{
var form = document['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
if (checkboxes
RE: Struts action call in a JS method returns blank page
Happy to provide an opportunity for self-promotion :-)!
I think you're right about dropping the params somewhere. I've been
trying today to set up a new approach, which seems simpler to me, but
which is still fighting me. The basic idea is to use the form to hold
the array of values I need rather than just sticking them up onto the
URL. To that end, I rewrote the JS function like this:
function addCheckBoxValuesToForm(locationStr)
{
var form = document['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
if (checkboxes)
{
var checkStr = new Array();
var uncheckedStr = new Array();
// If the no.of checkboxes is one then converting the checkbox
object to
// Checkbox array.
if(checkboxes.type == checkbox)
{
checkboxes = [checkboxes];
}
for (var i = 0; i checkboxes.length; ++i)
{
if (checkboxes[i].checked)
{
checkStr.push(checkboxes[i].value);
}
else
{
uncheckedStr.push(checkboxes[i].value);
}
}
if (checkStr.length 0)
{
form.elements['checkbox_id'] = checkStr;
checkboxes_across.push(checkStr);
}
if (uncheckedStr.length 0)
{
form.elements['uncheckbox_id'] = uncheckedStr;
}
}
form.elements['checkbox_ids_across'].value = checkboxes_across;
}
document.location.href = locationStr;
}
I've got appropriate setters and getters in my Java form (I think,
though I have to use Identifier[] objects rather than String[], so I
might need to convert that), and I also added a hidden field
checkbox_ids_across into my form on the JSP form. But I'm still
getting a JS error when I open the page that checkbox_ids_across is
null or not an object, and it's still not doing what it's supposed to
do.
Any suggestions? Thanks!
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 5:30 PM
To: Struts Users Mailing List
Cc: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
On Thu, February 8, 2007 4:46 pm, Christopher Loschen wrote:
Thanks Frank -- I've been reading your posts on JWP with great
interest
for quite a while, and I'll bet your book is another good resource.
*Of course* it is :) (what, you expected a different answer?!?) FYI, my
new book, Practical JavaScript, DOM Scripting and Ajax Projects, is
scheduled to hit shelves in mid-April (never pass up the chance for a
little shameless self-promotion I've been told!)
The current project (or at least this piece of it) has to be finished
by
tomorrow, so I may not be able to introduce Ajax just yet. However,
I'm
definitely interested in learning more about it, and will no doubt use
it more as I learn more.
Sounds good. I'd say it's not generally something you want to jump into
on a tight deadline if you have't done as much client-side
development...
many good Java developers have a bit of a rough time early on when
trying
to do more client-side stuff... seems like it should be simpler most
say,
but it isn't usually :)
Meanwhile, I'm looking at a possibly related problem. We've got
checkboxes on multiple pages and a JS function which keeps track of
which boxes are checked on which page so that we can go from page to
page and retain the boxes checked on other pages. That works by
putting
the checkbox ids into the URL for the page. It's working correctly,
more
or less, but now I find that when I actually am ready to use the array
of checkboxes, I'm getting only the ones on the current page, not the
rest. My Java method is getting the correct request parameters, but it
always returns null. Perhaps that's because the request parameters are
associated with one action (which displays the appropriate page of the
list) and my action class is associated with a different action (to
store the checkbox values and process the result)? If that's right, I
guess I need to get those values into my action too. Does that sound
like a reasonable guess?
Hmm... I'm not sure I followed the whole thing, but it sure sounds like
your dropping the params somewhere... my guess is that you aren't
replicating the whole query string with each request, which you'd need
to
do.
However, I'd definitely say you probably want to be storing that info in
session in the first place... then it's relatively easy to pass it along
with every single request for all pages that need it.
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent
Re: Struts action call in a JS method returns blank page
You should try debugging it. If you have Firebug installed (if you
don't, you should :) ), click on scripts, and under Options select
Break on All Errors. Or just set breakpoints inside the js code.
regards
musachy
Christopher Loschen wrote:
Happy to provide an opportunity for self-promotion :-)!
I think you're right about dropping the params somewhere. I've been
trying today to set up a new approach, which seems simpler to me, but
which is still fighting me. The basic idea is to use the form to hold
the array of values I need rather than just sticking them up onto the
URL. To that end, I rewrote the JS function like this:
function addCheckBoxValuesToForm(locationStr)
{
var form = document['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
if (checkboxes)
{
var checkStr = new Array();
var uncheckedStr = new Array();
// If the no.of checkboxes is one then converting the checkbox
object to
// Checkbox array.
if(checkboxes.type == checkbox)
{
checkboxes = [checkboxes];
}
for (var i = 0; i checkboxes.length; ++i)
{
if (checkboxes[i].checked)
{
checkStr.push(checkboxes[i].value);
}
else
{
uncheckedStr.push(checkboxes[i].value);
}
}
if (checkStr.length 0)
{
form.elements['checkbox_id'] = checkStr;
checkboxes_across.push(checkStr);
}
if (uncheckedStr.length 0)
{
form.elements['uncheckbox_id'] = uncheckedStr;
}
}
form.elements['checkbox_ids_across'].value = checkboxes_across;
}
document.location.href = locationStr;
}
I've got appropriate setters and getters in my Java form (I think,
though I have to use Identifier[] objects rather than String[], so I
might need to convert that), and I also added a hidden field
checkbox_ids_across into my form on the JSP form. But I'm still
getting a JS error when I open the page that checkbox_ids_across is
null or not an object, and it's still not doing what it's supposed to
do.
Any suggestions? Thanks!
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 5:30 PM
To: Struts Users Mailing List
Cc: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
On Thu, February 8, 2007 4:46 pm, Christopher Loschen wrote:
Thanks Frank -- I've been reading your posts on JWP with great
interest
for quite a while, and I'll bet your book is another good resource.
*Of course* it is :) (what, you expected a different answer?!?) FYI, my
new book, Practical JavaScript, DOM Scripting and Ajax Projects, is
scheduled to hit shelves in mid-April (never pass up the chance for a
little shameless self-promotion I've been told!)
The current project (or at least this piece of it) has to be finished
by
tomorrow, so I may not be able to introduce Ajax just yet. However,
I'm
definitely interested in learning more about it, and will no doubt use
it more as I learn more.
Sounds good. I'd say it's not generally something you want to jump into
on a tight deadline if you have't done as much client-side
development...
many good Java developers have a bit of a rough time early on when
trying
to do more client-side stuff... seems like it should be simpler most
say,
but it isn't usually :)
Meanwhile, I'm looking at a possibly related problem. We've got
checkboxes on multiple pages and a JS function which keeps track of
which boxes are checked on which page so that we can go from page to
page and retain the boxes checked on other pages. That works by
putting
the checkbox ids into the URL for the page. It's working correctly,
more
or less, but now I find that when I actually am ready to use the array
of checkboxes, I'm getting only the ones on the current page, not the
rest. My Java method is getting the correct request parameters, but it
always returns null. Perhaps that's because the request parameters are
associated with one action (which displays the appropriate page of the
list) and my action class is associated with a different action (to
store the checkbox values and process the result)? If that's right, I
guess I need to get those values into my action too. Does that sound
like a reasonable guess?
Hmm... I'm not sure I followed the whole thing, but it sure sounds like
your dropping the params somewhere... my guess is that you aren't
replicating the whole query string with each request, which you'd
Re: Struts action call in a JS method returns blank page
Yeah, as musachy suggests, Firebug is your friend :) I personally tend
to code my JS to always go after specific IDs rather than using any of
the common collections... that usually works just fine as long as you
don't have multiple dynamic forms.
Frank
Christopher Loschen wrote:
Happy to provide an opportunity for self-promotion :-)!
I think you're right about dropping the params somewhere. I've been
trying today to set up a new approach, which seems simpler to me, but
which is still fighting me. The basic idea is to use the form to hold
the array of values I need rather than just sticking them up onto the
URL. To that end, I rewrote the JS function like this:
function addCheckBoxValuesToForm(locationStr)
{
var form = document['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
if (checkboxes)
{
var checkStr = new Array();
var uncheckedStr = new Array();
// If the no.of checkboxes is one then converting the checkbox
object to
// Checkbox array.
if(checkboxes.type == checkbox)
{
checkboxes = [checkboxes];
}
for (var i = 0; i checkboxes.length; ++i)
{
if (checkboxes[i].checked)
{
checkStr.push(checkboxes[i].value);
}
else
{
uncheckedStr.push(checkboxes[i].value);
}
}
if (checkStr.length 0)
{
form.elements['checkbox_id'] = checkStr;
checkboxes_across.push(checkStr);
}
if (uncheckedStr.length 0)
{
form.elements['uncheckbox_id'] = uncheckedStr;
}
}
form.elements['checkbox_ids_across'].value = checkboxes_across;
}
document.location.href = locationStr;
}
I've got appropriate setters and getters in my Java form (I think,
though I have to use Identifier[] objects rather than String[], so I
might need to convert that), and I also added a hidden field
checkbox_ids_across into my form on the JSP form. But I'm still
getting a JS error when I open the page that checkbox_ids_across is
null or not an object, and it's still not doing what it's supposed to
do.
Any suggestions? Thanks!
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 5:30 PM
To: Struts Users Mailing List
Cc: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
On Thu, February 8, 2007 4:46 pm, Christopher Loschen wrote:
Thanks Frank -- I've been reading your posts on JWP with great
interest
for quite a while, and I'll bet your book is another good resource.
*Of course* it is :) (what, you expected a different answer?!?) FYI, my
new book, Practical JavaScript, DOM Scripting and Ajax Projects, is
scheduled to hit shelves in mid-April (never pass up the chance for a
little shameless self-promotion I've been told!)
The current project (or at least this piece of it) has to be finished
by
tomorrow, so I may not be able to introduce Ajax just yet. However,
I'm
definitely interested in learning more about it, and will no doubt use
it more as I learn more.
Sounds good. I'd say it's not generally something you want to jump into
on a tight deadline if you have't done as much client-side
development...
many good Java developers have a bit of a rough time early on when
trying
to do more client-side stuff... seems like it should be simpler most
say,
but it isn't usually :)
Meanwhile, I'm looking at a possibly related problem. We've got
checkboxes on multiple pages and a JS function which keeps track of
which boxes are checked on which page so that we can go from page to
page and retain the boxes checked on other pages. That works by
putting
the checkbox ids into the URL for the page. It's working correctly,
more
or less, but now I find that when I actually am ready to use the array
of checkboxes, I'm getting only the ones on the current page, not the
rest. My Java method is getting the correct request parameters, but it
always returns null. Perhaps that's because the request parameters are
associated with one action (which displays the appropriate page of the
list) and my action class is associated with a different action (to
store the checkbox values and process the result)? If that's right, I
guess I need to get those values into my action too. Does that sound
like a reasonable guess?
Hmm... I'm not sure I followed the whole thing, but it sure sounds like
your dropping the params somewhere... my guess is that you aren't
replicating the whole query string with each request, which you'd need
to
do.
However, I'd
RE: Struts action call in a JS method returns blank page
OK, I've installed Firebug and also Firefox (a good thing since we
support it anyway, so it's good to have it on my system). It did find
some stuff I missed right away including the JS error on page load
(which turned out to be in a method I hadn't showed you -- oops!).
But I'm still not getting any results, and I'm not sure why. My JS
function gets the form OK and the action, name, etc. are all correct.
But the form in the debugger has no elements and no child nodes, while
my form on the page has this code:
input type=hidden name=checkbox_ids_across value=
...
input type=checkbox name=checkboxes value=32
Etc.
So I would expect I would have at least a string for checkbox_ids_across
and an array of strings for the checkboxes. Is that right? I must be
missing something.
The bit of code I'm looking at so far is:
function addCheckBoxValuesToForm(locationStr)
{
var form = document.forms['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Friday, February 09, 2007 3:35 PM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Yeah, as musachy suggests, Firebug is your friend :) I personally tend
to code my JS to always go after specific IDs rather than using any of
the common collections... that usually works just fine as long as you
don't have multiple dynamic forms.
Frank
Christopher Loschen wrote:
Happy to provide an opportunity for self-promotion :-)!
I think you're right about dropping the params somewhere. I've been
trying today to set up a new approach, which seems simpler to me, but
which is still fighting me. The basic idea is to use the form to hold
the array of values I need rather than just sticking them up onto the
URL. To that end, I rewrote the JS function like this:
function addCheckBoxValuesToForm(locationStr)
{
var form = document['checkbox-form'];
if (form){
var checkboxes_across = new Array();
var selectedCheckBoxes = new Array();
var formCheckboxAcross = form.elements['checkbox_ids_across'];
if(formCheckboxAcross!=null formCheckboxAcross!=) {
selectedCheckBoxes = formCheckboxAcross;
}
if (selectedCheckBoxes.length 0) {
checkboxes_across.push(selectedCheckboxes);
}
var checkboxes = form.elements['checkboxes'];
if (checkboxes)
{
var checkStr = new Array();
var uncheckedStr = new Array();
// If the no.of checkboxes is one then converting the checkbox
object to
// Checkbox array.
if(checkboxes.type == checkbox)
{
checkboxes = [checkboxes];
}
for (var i = 0; i checkboxes.length; ++i)
{
if (checkboxes[i].checked)
{
checkStr.push(checkboxes[i].value);
}
else
{
uncheckedStr.push(checkboxes[i].value);
}
}
if (checkStr.length 0)
{
form.elements['checkbox_id'] = checkStr;
checkboxes_across.push(checkStr);
}
if (uncheckedStr.length 0)
{
form.elements['uncheckbox_id'] = uncheckedStr;
}
}
form.elements['checkbox_ids_across'].value = checkboxes_across;
}
document.location.href = locationStr;
}
I've got appropriate setters and getters in my Java form (I think,
though I have to use Identifier[] objects rather than String[], so I
might need to convert that), and I also added a hidden field
checkbox_ids_across into my form on the JSP form. But I'm still
getting a JS error when I open the page that checkbox_ids_across is
null or not an object, and it's still not doing what it's supposed to
do.
Any suggestions? Thanks!
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 5:30 PM
To: Struts Users Mailing List
Cc: Struts Users Mailing List
Subject: RE: Struts action call in a JS method returns blank page
On Thu, February 8, 2007 4:46 pm, Christopher Loschen wrote:
Thanks Frank -- I've been reading your posts on JWP with great
interest
for quite a while, and I'll bet your book is another good resource.
*Of course* it is :) (what, you expected a different answer?!?) FYI,
my
new book, Practical JavaScript, DOM Scripting and Ajax Projects, is
scheduled to hit shelves in mid-April (never pass up the chance for a
little shameless self-promotion I've been told!)
The current project (or at least this piece of it) has to be finished
by
tomorrow, so I may not be able to introduce Ajax
RE: Struts action call in a JS method returns blank page
Yes, you're right that the form submit was causing the system to forward to
whatever the action said, which in my case was the blank page. You'll see from
the later emails in the thread yesterday that I solved that by forwarding to
the action which populated the original page.
I need the form.submit because I need to get the checked boxes from the form
and I need to call the action specified in the action attribute on that form in
order to put those checkbox values into the request in the form that my
downstream code needs.
Submitting the form is the only way I know to get the form values the user
submits from the HTML page to my Java code -- are you saying that I have other
alternatives?
Chris
From: Yee Kai Lai [mailto:[EMAIL PROTECTED]
Sent: Thu 2/8/2007 12:24 AM
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named 'service.device.selected-devices-form' then
it will never be null hence it will always submit.
May you could enlightened why u need a form.submit() ?
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: Struts action call in a JS method returns blank page
Date: Wed, 7 Feb 2007 14:14:35 -0500
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1) or
with Javascript, or something else. But my best guess is it's a Struts
issue, and anyway, there are a lot of very knowledgeable people on both
of those technologies here, so I hope someone can help. Bottom line: I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other code
gets those values again and uses them as a list of devices on which to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls, starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user then
clicks on one of those actions, another Javascript function fires which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it doesn't
actually need to go anywhere (though that might be part of my problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But the
main window goes blank where before it remained unchanged. When I've
seen blank pages like this before, it meant there was a bad action
forward in the struts-config file, but I don't want the main page to
change at all, so what I really want is for the main page to just stay
in place as it was before the form was submitted.
How do I go about doing that? Thanks!
Chris Loschen
_
Receive MSN Hotmail alerts over SMS!
http://en-asiasms.mobile.msn.com/ac.aspx?cid=1002
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts action call in a JS method returns blank page
Like I said before you can use Ajax to submit the form, and the page won't
refresh, how to do it depends on what JS framework you are using, if any.
regards
musachy
On 2/8/07, Christopher Loschen [EMAIL PROTECTED] wrote:
Yes, you're right that the form submit was causing the system to forward
to whatever the action said, which in my case was the blank page. You'll see
from the later emails in the thread yesterday that I solved that by
forwarding to the action which populated the original page.
I need the form.submit because I need to get the checked boxes from the
form and I need to call the action specified in the action attribute on that
form in order to put those checkbox values into the request in the form that
my downstream code needs.
Submitting the form is the only way I know to get the form values the user
submits from the HTML page to my Java code -- are you saying that I have
other alternatives?
Chris
From: Yee Kai Lai [mailto:[EMAIL PROTECTED]
Sent: Thu 2/8/2007 12:24 AM
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named 'service.device.selected-devices-form'
then
it will never be null hence it will always submit.
May you could enlightened why u need a form.submit() ?
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: Struts action call in a JS method returns blank page
Date: Wed, 7 Feb 2007 14:14:35 -0500
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1) or
with Javascript, or something else. But my best guess is it's a Struts
issue, and anyway, there are a lot of very knowledgeable people on both
of those technologies here, so I hope someone can help. Bottom line: I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other code
gets those values again and uses them as a list of devices on which to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls, starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user then
clicks on one of those actions, another Javascript function fires which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it doesn't
actually need to go anywhere (though that might be part of my problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But the
main window goes blank where before it remained unchanged. When I've
seen blank pages like this before, it meant there was a bad action
forward in the struts-config file, but I don't want the main page to
change at all, so what I really want is for the main page to just stay
in place as it was before the form was submitted.
How do I go about doing that? Thanks!
Chris Loschen
_
Receive MSN Hotmail alerts over SMS!
http://en-asiasms.mobile.msn.com/ac.aspx?cid=1002
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
Hey
RE: Struts action call in a JS method returns blank page
Its alright since you have forwarded to the action which populated the
original page to solve the blank page problem. There are no other ways
beside submitting form to allow your java code to recieve the parameter
values passed from the jsp to action.
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
Date: Thu, 8 Feb 2007 07:36:03 -0500
Yes, you're right that the form submit was causing the system to forward to
whatever the action said, which in my case was the blank page. You'll see
from the later emails in the thread yesterday that I solved that by
forwarding to the action which populated the original page.
I need the form.submit because I need to get the checked boxes from the
form and I need to call the action specified in the action attribute on
that form in order to put those checkbox values into the request in the
form that my downstream code needs.
Submitting the form is the only way I know to get the form values the user
submits from the HTML page to my Java code -- are you saying that I have
other alternatives?
Chris
From: Yee Kai Lai [mailto:[EMAIL PROTECTED]
Sent: Thu 2/8/2007 12:24 AM
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named 'service.device.selected-devices-form'
then
it will never be null hence it will always submit.
May you could enlightened why u need a form.submit() ?
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: Struts action call in a JS method returns blank page
Date: Wed, 7 Feb 2007 14:14:35 -0500
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1) or
with Javascript, or something else. But my best guess is it's a Struts
issue, and anyway, there are a lot of very knowledgeable people on both
of those technologies here, so I hope someone can help. Bottom line: I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other code
gets those values again and uses them as a list of devices on which to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls, starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user then
clicks on one of those actions, another Javascript function fires which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it doesn't
actually need to go anywhere (though that might be part of my problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But the
main window goes blank where before it remained unchanged. When I've
seen blank pages like this before, it meant there was a bad action
forward in the struts-config file, but I don't want the main page to
change at all, so what I really want is for the main page to just stay
in place as it was before the form was submitted.
How do I go about doing that? Thanks!
Chris Loschen
RE: Struts action call in a JS method returns blank page
I'm not all that familiar with JS, to be honest, and I've never had the
chance to use Ajax (but want to learn). What I have now is working, but
I'd be happy to learn how to do it without refreshing the page -- that
does seem like a more elegant solution to me. What do you suggest? We do
use JS for our app, but no JS framework as such as far as I can tell.
Chris
-Original Message-
From: Musachy Barroso [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 8:03 AM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Like I said before you can use Ajax to submit the form, and the page
won't
refresh, how to do it depends on what JS framework you are using, if
any.
regards
musachy
On 2/8/07, Christopher Loschen [EMAIL PROTECTED] wrote:
Yes, you're right that the form submit was causing the system to
forward
to whatever the action said, which in my case was the blank page.
You'll see
from the later emails in the thread yesterday that I solved that by
forwarding to the action which populated the original page.
I need the form.submit because I need to get the checked boxes from
the
form and I need to call the action specified in the action attribute
on that
form in order to put those checkbox values into the request in the
form that
my downstream code needs.
Submitting the form is the only way I know to get the form values the
user
submits from the HTML page to my Java code -- are you saying that I
have
other alternatives?
Chris
From: Yee Kai Lai [mailto:[EMAIL PROTECTED]
Sent: Thu 2/8/2007 12:24 AM
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named
'service.device.selected-devices-form'
then
it will never be null hence it will always submit.
May you could enlightened why u need a form.submit() ?
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: Struts action call in a JS method returns blank page
Date: Wed, 7 Feb 2007 14:14:35 -0500
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1)
or
with Javascript, or something else. But my best guess is it's a
Struts
issue, and anyway, there are a lot of very knowledgeable people on
both
of those technologies here, so I hope someone can help. Bottom line:
I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on
page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other
code
gets those values again and uses them as a list of devices on which
to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls,
starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user
then
clicks on one of those actions, another Javascript function fires
which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it
doesn't
actually need to go anywhere (though that might be part of my
problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable
=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But
the
main
Re: Struts action call in a JS method returns blank page
Check Prototype out, here is a good tutorial:
http://www.sergiopereira.com/articles/prototype.js.html, basically what
you need is something like:
|**var myAjax = new Ajax.Request(
url,
{
method: 'get',
parameters: Form.serialize(formid),
onComplete: function() {
//do something here, or not :)
}
});**|
regards
musachy
Christopher Loschen wrote:
I'm not all that familiar with JS, to be honest, and I've never had the
chance to use Ajax (but want to learn). What I have now is working, but
I'd be happy to learn how to do it without refreshing the page -- that
does seem like a more elegant solution to me. What do you suggest? We do
use JS for our app, but no JS framework as such as far as I can tell.
Chris
-Original Message-
From: Musachy Barroso [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 8:03 AM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Like I said before you can use Ajax to submit the form, and the page
won't
refresh, how to do it depends on what JS framework you are using, if
any.
regards
musachy
On 2/8/07, Christopher Loschen [EMAIL PROTECTED] wrote:
Yes, you're right that the form submit was causing the system to
forward
to whatever the action said, which in my case was the blank page.
You'll see
from the later emails in the thread yesterday that I solved that by
forwarding to the action which populated the original page.
I need the form.submit because I need to get the checked boxes from
the
form and I need to call the action specified in the action attribute
on that
form in order to put those checkbox values into the request in the
form that
my downstream code needs.
Submitting the form is the only way I know to get the form values the
user
submits from the HTML page to my Java code -- are you saying that I
have
other alternatives?
Chris
From: Yee Kai Lai [mailto:[EMAIL PROTECTED]
Sent: Thu 2/8/2007 12:24 AM
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named
'service.device.selected-devices-form'
then
it will never be null hence it will always submit.
May you could enlightened why u need a form.submit() ?
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: Struts action call in a JS method returns blank page
Date: Wed, 7 Feb 2007 14:14:35 -0500
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1)
or
with Javascript, or something else. But my best guess is it's a
Struts
issue, and anyway, there are a lot of very knowledgeable people on
both
of those technologies here, so I hope someone can help. Bottom line:
I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on
page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other
code
gets those values again and uses them as a list of devices on which
to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls,
starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user
then
clicks on one of those actions, another Javascript function fires
which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it
doesn't
actually need to go anywhere (though that might be part of my
problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit
Re: Struts action call in a JS method returns blank page
Theres a ton of choice on which AJAX library to use, many of them very
good. However, since your working in Java specifically, and since you say
you are not all that familiar with JS, you may prefer a solution that will
(in most cases) require ZERO Javascript coding, and such a thing exists:
http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html
This is the AjaxParts Taglib (APT), which is a part of Java Web Parts (JWP):
http://javawebparts.sourceforge.net
With this, let's say you want to update a specific div in response to a
button being clicked on a page with some data returned by the server
without refreshing the page, in your JSP you would have:
div id=myDivResponse will go here/div
input type=button value=Click for AJAXajax:event
ajaxRef=ajaxFunctions/button1 /
ajax:enable /
That's it, no JavaScript at all! The other piece to the puzzle is an XML
file like so:
ajaxConfig
group ajaxRef=ajaxFunctions
element ajaxRef=button1
event type=onClick
requestHandler type=std:SimpleRequest target=/myURL
parameter/parameter
/requestHandler
responseHandler type=std:InnerHTML
parametermyDiv/parameter
/responseHandler
/event
/element
/group
/ajaxConfig
The XML file maps via the ajaxRef values to the ajaxRef in the
ajax:event tag, and it defines what's going to happen in response to
some event (onClick in this case), which in this case is simply an AJAX
request to /myURL with no data passed, and then what happens when the
response comes back, which is it will be inserted into myDiv via
innerHTML.
There's a whole bunch of request and response handlers available out of
the box which tend to cover most needs, things like submitting forms,
executing some returned Javascript, sending XML automatically constructed
from form data, transforming returned XML via XLT, and so on. You also
have the ability to write your own handlers (just plain Javascript) if you
need something that isn't covered.
hth,
Frank
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
AIM/Yahoo: fzammetti
MSN: [EMAIL PROTECTED]
Author of Practical Ajax Projects With Java Technology
(2006, Apress, ISBN 1-59059-695-1)
Java Web Parts - http://javawebparts.sourceforge.net
Supplying the wheel, so you don't have to reinvent it!
On Thu, February 8, 2007 9:49 am, Musachy Barroso wrote:
Check Prototype out, here is a good tutorial:
http://www.sergiopereira.com/articles/prototype.js.html, basically what
you need is something like:
|**var myAjax = new Ajax.Request(
url,
{
method: 'get',
parameters: Form.serialize(formid),
onComplete: function() {
//do something here, or not :)
}
});**|
regards
musachy
Christopher Loschen wrote:
I'm not all that familiar with JS, to be honest, and I've never had the
chance to use Ajax (but want to learn). What I have now is working, but
I'd be happy to learn how to do it without refreshing the page -- that
does seem like a more elegant solution to me. What do you suggest? We do
use JS for our app, but no JS framework as such as far as I can tell.
Chris
-Original Message-
From: Musachy Barroso [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 8:03 AM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Like I said before you can use Ajax to submit the form, and the page
won't
refresh, how to do it depends on what JS framework you are using, if
any.
regards
musachy
On 2/8/07, Christopher Loschen [EMAIL PROTECTED] wrote:
Yes, you're right that the form submit was causing the system to
forward
to whatever the action said, which in my case was the blank page.
You'll see
from the later emails in the thread yesterday that I solved that by
forwarding to the action which populated the original page.
I need the form.submit because I need to get the checked boxes from
the
form and I need to call the action specified in the action attribute
on that
form in order to put those checkbox values into the request in the
form that
my downstream code needs.
Submitting the form is the only way I know to get the form values the
user
submits from the HTML page to my Java code -- are you saying that I
have
other alternatives?
Chris
From: Yee Kai Lai [mailto:[EMAIL PROTECTED]
Sent: Thu 2/8/2007 12:24 AM
To: user@struts.apache.org
Subject: RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named
'service.device.selected-devices-form'
then
it will never be null hence
RE: Struts action call in a JS method returns blank page
Thanks Frank -- I've been reading your posts on JWP with great interest
for quite a while, and I'll bet your book is another good resource.
The current project (or at least this piece of it) has to be finished by
tomorrow, so I may not be able to introduce Ajax just yet. However, I'm
definitely interested in learning more about it, and will no doubt use
it more as I learn more.
Meanwhile, I'm looking at a possibly related problem. We've got
checkboxes on multiple pages and a JS function which keeps track of
which boxes are checked on which page so that we can go from page to
page and retain the boxes checked on other pages. That works by putting
the checkbox ids into the URL for the page. It's working correctly, more
or less, but now I find that when I actually am ready to use the array
of checkboxes, I'm getting only the ones on the current page, not the
rest. My Java method is getting the correct request parameters, but it
always returns null. Perhaps that's because the request parameters are
associated with one action (which displays the appropriate page of the
list) and my action class is associated with a different action (to
store the checkbox values and process the result)? If that's right, I
guess I need to get those values into my action too. Does that sound
like a reasonable guess?
Chris
-Original Message-
From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 08, 2007 10:30 AM
To: Struts Users Mailing List
Cc: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
Theres a ton of choice on which AJAX library to use, many of them very
good. However, since your working in Java specifically, and since you
say
you are not all that familiar with JS, you may prefer a solution that
will
(in most cases) require ZERO Javascript coding, and such a thing exists:
http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/tagl
ib/package-summary.html
This is the AjaxParts Taglib (APT), which is a part of Java Web Parts
(JWP):
http://javawebparts.sourceforge.net
With this, let's say you want to update a specific div in response to
a
button being clicked on a page with some data returned by the server
without refreshing the page, in your JSP you would have:
div id=myDivResponse will go here/div
input type=button value=Click for AJAXajax:event
ajaxRef=ajaxFunctions/button1 /
ajax:enable /
That's it, no JavaScript at all! The other piece to the puzzle is an
XML
file like so:
ajaxConfig
group ajaxRef=ajaxFunctions
element ajaxRef=button1
event type=onClick
requestHandler type=std:SimpleRequest target=/myURL
parameter/parameter
/requestHandler
responseHandler type=std:InnerHTML
parametermyDiv/parameter
/responseHandler
/event
/element
/group
/ajaxConfig
The XML file maps via the ajaxRef values to the ajaxRef in the
ajax:event tag, and it defines what's going to happen in response to
some event (onClick in this case), which in this case is simply an AJAX
request to /myURL with no data passed, and then what happens when the
response comes back, which is it will be inserted into myDiv via
innerHTML.
There's a whole bunch of request and response handlers available out of
the box which tend to cover most needs, things like submitting forms,
executing some returned Javascript, sending XML automatically
constructed
from form data, transforming returned XML via XLT, and so on. You also
have the ability to write your own handlers (just plain Javascript) if
you
need something that isn't covered.
hth,
Frank
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
AIM/Yahoo: fzammetti
MSN: [EMAIL PROTECTED]
Author of Practical Ajax Projects With Java Technology
(2006, Apress, ISBN 1-59059-695-1)
Java Web Parts - http://javawebparts.sourceforge.net
Supplying the wheel, so you don't have to reinvent it!
On Thu, February 8, 2007 9:49 am, Musachy Barroso wrote:
Check Prototype out, here is a good tutorial:
http://www.sergiopereira.com/articles/prototype.js.html, basically
what
you need is something like:
|**var myAjax = new Ajax.Request(
url,
{
method: 'get',
parameters: Form.serialize(formid),
onComplete: function() {
//do something here, or not :)
}
});**|
regards
musachy
Christopher Loschen wrote:
I'm not all that familiar with JS, to be honest, and I've never had
the
chance to use Ajax (but want to learn). What I have now is working,
but
I'd be happy to learn how to do it without refreshing the page --
that
does seem like a more elegant solution to me. What do you suggest? We
do
use JS for our app, but no JS framework as such as far as I can tell.
Chris
RE: Struts action call in a JS method returns blank page
On Thu, February 8, 2007 4:46 pm, Christopher Loschen wrote: Thanks Frank -- I've been reading your posts on JWP with great interest for quite a while, and I'll bet your book is another good resource. *Of course* it is :) (what, you expected a different answer?!?) FYI, my new book, Practical JavaScript, DOM Scripting and Ajax Projects, is scheduled to hit shelves in mid-April (never pass up the chance for a little shameless self-promotion I've been told!) The current project (or at least this piece of it) has to be finished by tomorrow, so I may not be able to introduce Ajax just yet. However, I'm definitely interested in learning more about it, and will no doubt use it more as I learn more. Sounds good. I'd say it's not generally something you want to jump into on a tight deadline if you have't done as much client-side development... many good Java developers have a bit of a rough time early on when trying to do more client-side stuff... seems like it should be simpler most say, but it isn't usually :) Meanwhile, I'm looking at a possibly related problem. We've got checkboxes on multiple pages and a JS function which keeps track of which boxes are checked on which page so that we can go from page to page and retain the boxes checked on other pages. That works by putting the checkbox ids into the URL for the page. It's working correctly, more or less, but now I find that when I actually am ready to use the array of checkboxes, I'm getting only the ones on the current page, not the rest. My Java method is getting the correct request parameters, but it always returns null. Perhaps that's because the request parameters are associated with one action (which displays the appropriate page of the list) and my action class is associated with a different action (to store the checkbox values and process the result)? If that's right, I guess I need to get those values into my action too. Does that sound like a reasonable guess? Hmm... I'm not sure I followed the whole thing, but it sure sounds like your dropping the params somewhere... my guess is that you aren't replicating the whole query string with each request, which you'd need to do. However, I'd definitely say you probably want to be storing that info in session in the first place... then it's relatively easy to pass it along with every single request for all pages that need it. Chris -Original Message- From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] Sent: Thursday, February 08, 2007 10:30 AM To: Struts Users Mailing List Cc: Struts Users Mailing List Subject: Re: Struts action call in a JS method returns blank page Theres a ton of choice on which AJAX library to use, many of them very good. However, since your working in Java specifically, and since you say you are not all that familiar with JS, you may prefer a solution that will (in most cases) require ZERO Javascript coding, and such a thing exists: http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/tagl ib/package-summary.html This is the AjaxParts Taglib (APT), which is a part of Java Web Parts (JWP): http://javawebparts.sourceforge.net With this, let's say you want to update a specific div in response to a button being clicked on a page with some data returned by the server without refreshing the page, in your JSP you would have: div id=myDivResponse will go here/div input type=button value=Click for AJAXajax:event ajaxRef=ajaxFunctions/button1 / ajax:enable / That's it, no JavaScript at all! The other piece to the puzzle is an XML file like so: ajaxConfig group ajaxRef=ajaxFunctions element ajaxRef=button1 event type=onClick requestHandler type=std:SimpleRequest target=/myURL parameter/parameter /requestHandler responseHandler type=std:InnerHTML parametermyDiv/parameter /responseHandler /event /element /group /ajaxConfig The XML file maps via the ajaxRef values to the ajaxRef in the ajax:event tag, and it defines what's going to happen in response to some event (onClick in this case), which in this case is simply an AJAX request to /myURL with no data passed, and then what happens when the response comes back, which is it will be inserted into myDiv via innerHTML. There's a whole bunch of request and response handlers available out of the box which tend to cover most needs, things like submitting forms, executing some returned Javascript, sending XML automatically constructed from form data, transforming returned XML via XLT, and so on. You also have the ability to write your own handlers (just plain Javascript) if you need something that isn't covered. hth, Frank -- Frank W. Zammetti Founder and Chief Software Architect Omnytex Technologies http://www.omnytex.com AIM/Yahoo: fzammetti MSN: [EMAIL PROTECTED] Author of Practical Ajax Projects With Java Technology (2006, Apress, ISBN 1
Re: Struts action call in a JS method returns blank page
When you post the form, after the action, struts will send a response,
usually a page. Because you don't want to change the current page, you
could do this by making an asynchronous request. I'm probably wrong, but
I don't think you can make a post, and stay on the same page (unless you
are returning the same page from the action of course).
regards
musachy
Christopher Loschen wrote:
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1) or
with Javascript, or something else. But my best guess is it's a Struts
issue, and anyway, there are a lot of very knowledgeable people on both
of those technologies here, so I hope someone can help. Bottom line: I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other code
gets those values again and uses them as a list of devices on which to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls, starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user then
clicks on one of those actions, another Javascript function fires which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it doesn't
actually need to go anywhere (though that might be part of my problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But the
main window goes blank where before it remained unchanged. When I've
seen blank pages like this before, it meant there was a bad action
forward in the struts-config file, but I don't want the main page to
change at all, so what I really want is for the main page to just stay
in place as it was before the form was submitted.
How do I go about doing that? Thanks!
Chris Loschen
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts action call in a JS method returns blank page
Thanks Musachy.
I changed the success action forward to point to the original page (or
really the action which creates that page) and that works, though it
does rebuild the page, which is unfortunate overhead. But it does do
what I need to do, so I'm happy.
Thank you.
Chris
-Original Message-
From: Musachy Barroso [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 07, 2007 2:30 PM
To: Struts Users Mailing List
Subject: Re: Struts action call in a JS method returns blank page
When you post the form, after the action, struts will send a response,
usually a page. Because you don't want to change the current page, you
could do this by making an asynchronous request. I'm probably wrong, but
I don't think you can make a post, and stay on the same page (unless you
are returning the same page from the action of course).
regards
musachy
Christopher Loschen wrote:
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1)
or
with Javascript, or something else. But my best guess is it's a Struts
issue, and anyway, there are a lot of very knowledgeable people on
both
of those technologies here, so I hope someone can help. Bottom line:
I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other code
gets those values again and uses them as a list of devices on which to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls,
starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user
then
clicks on one of those actions, another Javascript function fires
which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it
doesn't
actually need to go anywhere (though that might be part of my
problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But
the
main window goes blank where before it remained unchanged. When I've
seen blank pages like this before, it meant there was a bad action
forward in the struts-config file, but I don't want the main page to
change at all, so what I really want is for the main page to just stay
in place as it was before the form was submitted.
How do I go about doing that? Thanks!
Chris Loschen
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts action call in a JS method returns blank page
It returns a blank page might be due to
form.submit(); in your JS.
I think if you have a form named 'service.device.selected-devices-form' then
it will never be null hence it will always submit.
May you could enlightened why u need a form.submit() ?
From: Christopher Loschen [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List user@struts.apache.org
To: user@struts.apache.org
Subject: Struts action call in a JS method returns blank page
Date: Wed, 7 Feb 2007 14:14:35 -0500
Hi all,
I'm honestly unsure if I'm having a problem with Struts (sadly, 1.1) or
with Javascript, or something else. But my best guess is it's a Struts
issue, and anyway, there are a lot of very knowledgeable people on both
of those technologies here, so I hope someone can help. Bottom line: I'm
getting the popup with the correct values, but my main page under the
popup becomes blank.
I'm adding some functionality to an existing application. The
functionality I'm adding takes the values from some checkboxes on page
A, gets the corresponding devices from the checkbox values, and saves
the resulting List into the request. Later down the stream, other code
gets those values again and uses them as a list of devices on which to
perform an action. Pretty straightforward.
All of the actual navigation is happening via Javascript calls, starting
with a link on page A, but outside the form where my checkboxes are
declared. That link fires a Javascript function which pops up a small
window with a list of actions which have been defined. If the user then
clicks on one of those actions, another Javascript function fires which
pops up another window to confirm that the user wants to perform the
selected action on the selected devices.
I have inserted my added functionality into that second script.
Basically I need to submit the appropriate form on the page. I've
defined it with the correct action and I've got a mapping in my
struts-config.xml file:
form-bean
name=service.device.selected-devices-form
type=com.xxx.webapp.common.CheckboxForm/
...
action path=/service/device/actions/store-selected-devices
type=com.xxx.webapp.service.list.StoreSelectedDevicesAction
name=service.device.selected-devices-form /
The mapping doesn't have any action forwards defined because it doesn't
actually need to go anywhere (though that might be part of my problem).
The JS function looks like this:
function popActionConfirm(url) {
var form = document.forms['service.device.selected-devices-form'];
if (form!=null) form.submit();
var winl = (screen.width - 500) / 2;
var wint = (screen.height - 350) / 2;
winprops =
'height=250,width=375,top='+wint+',left='+winl+',scrollbars=0,resizable=
0';
var child = window.open(url,action_confirm, winprops);
self.name=main_window;
}
I added the first two lines of the JS method - it worked correctly
before I put those in (though of course it didn't have my added
functionality in place). The popup window does appear, and it has the
correct values in it (that is, the devices which were selected). But the
main window goes blank where before it remained unchanged. When I've
seen blank pages like this before, it meant there was a bad action
forward in the struts-config file, but I don't want the main page to
change at all, so what I really want is for the main page to just stay
in place as it was before the form was submitted.
How do I go about doing that? Thanks!
Chris Loschen
_
Receive MSN Hotmail alerts over SMS!
http://en-asiasms.mobile.msn.com/ac.aspx?cid=1002
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
