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smellis

2007-Mar-30 19:15 UTC

prototype.js: Asynchronous File Uploads

Hi All,

  I am working on a file management widget and it''s starting to get
exciting thanks to prototype.   Anyway, I want to implement
asynchronous file uploads.  I realize that I can''t do this with
Ajax.Request, or can I? (let me know if I am wrong).  I searched the
interweb looking for example techniques and I found that some people
are using a hidden iframe with a form in it.  They then submit the
form from the iframe so that the use does not perceive a page load.
This seems like the way to go.

The Problem
  Since this is a "widget", I am dynamically creating all of the
elements via a class (see my previous thread:
http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thread/32c86a75b804135b/184ebd7716791d1d?lnk=gst&q=my+own+class&rnum=1#184ebd7716791d1d)
so that anyone who uses it can just make an instance of my class and
it magically works (with the appropriate server backend of course).
The problem is, when I create an iframe using
document.createElement(iframe), I am not sure how to keep creating
elements within the iframe.  Does anyone know how to properly access
the DOM of an iframe in a cross browser manner?  I don''t think
prototype offers anything specifically for iframes (am i wrong
again?).

Here is what I have so far.
This is a little snippet from my class that builds the structure for
the widget.  This particular part is where the iframe is created.

//This is the hidden IFRAME for file uploads
this.hiddenContainer = document.createElement(''div'');
$(this.hiddenContainer).setStyle({display:''none''});
this.container.appendChild(this.hiddenContainer);
this.fileUploadIframe = document.createElement(''iframe'');
this.hiddenContainer.appendChild(this.fileUploadIframe);
//this.fib is hopefully the document object for the iframe
this.fib = this.fileUploadIframe.contentDocument;

//This is the form in the IFRAME
this.fileUploadForm = document.createElement(''form'');
this.fileUploadForm.setAttribute(''method'',
''get'');
this.fileUploadForm.setAttribute(''action'',
''/error'');
//here I am trying to add my form to the body of the document in the
iframe
this.fib.body.appendChild(this.fileUploadForm);

If anyone needs to see my class in it''s entirety, just let me know.

thanks in advance!

-stephan


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capripot-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2007-Apr-03 06:41 UTC

head link

Re: prototype.js: Asynchronous File Uploads

Hello
The DOM of an iframe is the same DOM that a HTML page,
you begin with a <html> element ...

Capripot

On 30 mar, 21:15, "smellis"
<stephan.el...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hi All,
>
>   I am working on a file management widget and it''s starting to
get
> exciting thanks to prototype.   Anyway, I want to implement
> asynchronous file uploads.  I realize that I can''t do this with
> Ajax.Request, or can I? (let me know if I am wrong).  I searched the
> interweb looking for example techniques and I found that some people
> are using a hiddeniframewith a form in it.  They then submit the
> form from theiframeso that the use does not perceive a page load.
> This seems like the way to go.
>
> The Problem
>   Since this is a "widget", I am dynamically creating all of the
> elements via a class (see my previous
thread:http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thr...)
> so that anyone who uses it can just make an instance of my class and
> it magically works (with the appropriate server backend of course).
> The problem is, when I create aniframeusing
> document.createElement(iframe), I am not sure how to keep creating
> elements within theiframe.  Does anyone know how to properly access
> the DOM of aniframein a cross browser manner?  I don''t think
> prototype offers anything specifically for iframes (am i wrong
> again?).
>
> Here is what I have so far.
> This is a little snippet from my class that builds the structure for
> the widget.  This particular part is where theiframeis created.
>
> //This is the hiddenIFRAMEfor file uploads
> this.hiddenContainer = document.createElement(''div'');
> $(this.hiddenContainer).setStyle({display:''none''});
> this.container.appendChild(this.hiddenContainer);
> this.fileUploadIframe = document.createElement(''iframe'');
> this.hiddenContainer.appendChild(this.fileUploadIframe);
> //this.fib is hopefully the document object for theiframe
> this.fib = this.fileUploadIframe.contentDocument;
>
> //This is the form in theIFRAME
> this.fileUploadForm = document.createElement(''form'');
> this.fileUploadForm.setAttribute(''method'',
''get'');
> this.fileUploadForm.setAttribute(''action'',
''/error'');
> //here I am trying to add my form to the body of the document in theiframe
> this.fib.body.appendChild(this.fileUploadForm);
>
> If anyone needs to see my class in it''s entirety, just let me
know.
>
> thanks in advance!
>
> -stephan

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Colin Mollenhour

2007-Apr-03 13:02 UTC

head link

Re: prototype.js: Asynchronous File Uploads

Here is what I use: http://pastie.caboo.se/50410
Not the best code, I know, but it works so I haven''t fiddled with it 
anymore. If you make some improvements to it let me know!

Colin

smellis wrote:> Hi All,
>
>   I am working on a file management widget and it''s starting to
get
> exciting thanks to prototype.   Anyway, I want to implement
> asynchronous file uploads.  I realize that I can''t do this with
> Ajax.Request, or can I? (let me know if I am wrong).  I searched the
> interweb looking for example techniques and I found that some people
> are using a hidden iframe with a form in it.  They then submit the
> form from the iframe so that the use does not perceive a page load.
> This seems like the way to go.
>
> The Problem
>   Since this is a "widget", I am dynamically creating all of the
> elements via a class (see my previous thread:
>
http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thread/32c86a75b804135b/184ebd7716791d1d?lnk=gst&q=my+own+class&rnum=1#184ebd7716791d1d)
> so that anyone who uses it can just make an instance of my class and
> it magically works (with the appropriate server backend of course).
> The problem is, when I create an iframe using
> document.createElement(iframe), I am not sure how to keep creating
> elements within the iframe.  Does anyone know how to properly access
> the DOM of an iframe in a cross browser manner?  I don''t think
> prototype offers anything specifically for iframes (am i wrong
> again?).
>
> Here is what I have so far.
> This is a little snippet from my class that builds the structure for
> the widget.  This particular part is where the iframe is created.
>
> //This is the hidden IFRAME for file uploads
> this.hiddenContainer = document.createElement(''div'');
> $(this.hiddenContainer).setStyle({display:''none''});
> this.container.appendChild(this.hiddenContainer);
> this.fileUploadIframe = document.createElement(''iframe'');
> this.hiddenContainer.appendChild(this.fileUploadIframe);
> //this.fib is hopefully the document object for the iframe
> this.fib = this.fileUploadIframe.contentDocument;
>
> //This is the form in the IFRAME
> this.fileUploadForm = document.createElement(''form'');
> this.fileUploadForm.setAttribute(''method'',
''get'');
> this.fileUploadForm.setAttribute(''action'',
''/error'');
> //here I am trying to add my form to the body of the document in the
> iframe
> this.fib.body.appendChild(this.fileUploadForm);
>
> If anyone needs to see my class in it''s entirety, just let me
know.
>
> thanks in advance!
>
> -stephan
>
>
> >
>
>   

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Stephan Ellis

2007-Apr-03 14:05 UTC

head link

Re: prototype.js: Asynchronous File Uploads

Wow, that''s nice.  Thanks dude!  I will let you know if I change
anything.
-stephan

On 4/3/07, Colin Mollenhour
<eliteii92g-NPSFNn/7+NYVo650/ln6uw@public.gmane.org>
wrote:>
>
> Here is what I use: http://pastie.caboo.se/50410
> Not the best code, I know, but it works so I haven''t fiddled with
it
> anymore. If you make some improvements to it let me know!
>
> Colin
>
> smellis wrote:
> > Hi All,
> >
> >   I am working on a file management widget and it''s starting
to get
> > exciting thanks to prototype.   Anyway, I want to implement
> > asynchronous file uploads.  I realize that I can''t do this
with
> > Ajax.Request, or can I? (let me know if I am wrong).  I searched the
> > interweb looking for example techniques and I found that some people
> > are using a hidden iframe with a form in it.  They then submit the
> > form from the iframe so that the use does not perceive a page load.
> > This seems like the way to go.
> >
> > The Problem
> >   Since this is a "widget", I am dynamically creating all of
the
> > elements via a class (see my previous thread:
> >
>
http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thread/32c86a75b804135b/184ebd7716791d1d?lnk=gst&q=my+own+class&rnum=1#184ebd7716791d1d
> )
> > so that anyone who uses it can just make an instance of my class and
> > it magically works (with the appropriate server backend of course).
> > The problem is, when I create an iframe using
> > document.createElement(iframe), I am not sure how to keep creating
> > elements within the iframe.  Does anyone know how to properly access
> > the DOM of an iframe in a cross browser manner?  I don''t
think
> > prototype offers anything specifically for iframes (am i wrong
> > again?).
> >
> > Here is what I have so far.
> > This is a little snippet from my class that builds the structure for
> > the widget.  This particular part is where the iframe is created.
> >
> > //This is the hidden IFRAME for file uploads
> > this.hiddenContainer =
document.createElement(''div'');
> > $(this.hiddenContainer).setStyle({display:''none''});
> > this.container.appendChild(this.hiddenContainer);
> > this.fileUploadIframe =
document.createElement(''iframe'');
> > this.hiddenContainer.appendChild(this.fileUploadIframe);
> > //this.fib is hopefully the document object for the iframe
> > this.fib = this.fileUploadIframe.contentDocument;
> >
> > //This is the form in the IFRAME
> > this.fileUploadForm =
document.createElement(''form'');
> > this.fileUploadForm.setAttribute(''method'',
''get'');
> > this.fileUploadForm.setAttribute(''action'',
''/error'');
> > //here I am trying to add my form to the body of the document in the
> > iframe
> > this.fib.body.appendChild(this.fileUploadForm);
> >
> > If anyone needs to see my class in it''s entirety, just let me
know.
> >
> > thanks in advance!
> >
> > -stephan
> >
> >
> > >
> >
> >
>
>
> >
>

-- 
------------------------------
To the government spies reading my email:
Lick my balls assholes!
------------------------------

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smellis

2007-Apr-04 14:16 UTC

head link

Re: prototype.js: Asynchronous File Uploads

Colin,
  Have you tested the code with internet explorer 7?  It does not seem
to work for me.  I will look into it and let you know if I get it
working. -stephan

On Apr 3, 9:05 am, "Stephan Ellis"
<stephan.el...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Wow, that''s nice.  Thanks dude!  I will let you know if I change
anything.
> -stephan
>
> On 4/3/07, Colin Mollenhour
<eliteii...-NPSFNn/7+NYVo650/ln6uw@public.gmane.org> wrote:
>
>
>
>
>
> > Here is what I use:http://pastie.caboo.se/50410
> > Not the best code, I know, but it works so I haven''t fiddled
with it
> > anymore. If you make some improvements to it let me know!
>
> > Colin
>
> > smellis wrote:
> > > Hi All,
>
> > >   I am working on a file management widget and it''s
starting to get
> > > exciting thanks to prototype.   Anyway, I want to implement
> > > asynchronous file uploads.  I realize that I can''t do
this with
> > > Ajax.Request, or can I? (let me know if I am wrong).  I searched
the
> > > interweb looking for example techniques and I found that some
people
> > > are using a hidden iframe with a form in it.  They then submit
the
> > > form from the iframe so that the use does not perceive a page
load.
> > > This seems like the way to go.
>
> > > The Problem
> > >   Since this is a "widget", I am dynamically creating
all of the
> > > elements via a class (see my previous thread:
>
>
>http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thr...
> > )
> > > so that anyone who uses it can just make an instance of my class
and
> > > it magically works (with the appropriate server backend of
course).
> > > The problem is, when I create an iframe using
> > > document.createElement(iframe), I am not sure how to keep
creating
> > > elements within the iframe.  Does anyone know how to properly
access
> > > the DOM of an iframe in a cross browser manner?  I don''t
think
> > > prototype offers anything specifically for iframes (am i wrong
> > > again?).
>
> > > Here is what I have so far.
> > > This is a little snippet from my class that builds the structure
for
> > > the widget.  This particular part is where the iframe is created.
>
> > > //This is the hidden IFRAME for file uploads
> > > this.hiddenContainer =
document.createElement(''div'');
> > >
$(this.hiddenContainer).setStyle({display:''none''});
> > > this.container.appendChild(this.hiddenContainer);
> > > this.fileUploadIframe =
document.createElement(''iframe'');
> > > this.hiddenContainer.appendChild(this.fileUploadIframe);
> > > //this.fib is hopefully the document object for the iframe
> > > this.fib = this.fileUploadIframe.contentDocument;
>
> > > //This is the form in the IFRAME
> > > this.fileUploadForm =
document.createElement(''form'');
> > > this.fileUploadForm.setAttribute(''method'',
''get'');
> > > this.fileUploadForm.setAttribute(''action'',
''/error'');
> > > //here I am trying to add my form to the body of the document in
the
> > > iframe
> > > this.fib.body.appendChild(this.fileUploadForm);
>
> > > If anyone needs to see my class in it''s entirety, just
let me know.
>
> > > thanks in advance!
>
> > > -stephan
>
> --
> ------------------------------
> To the government spies reading my email:
> Lick my balls assholes!
> ------------------------------

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Stephan Ellis

2007-Apr-04 14:56 UTC

head link

Re: prototype.js: Asynchronous File Uploads

I think the problem I am running into is that IE7 is not seeing my
dynamically created file input fields.  I turned on logging server side and
I noticed that none of my file upload fields are being sent to the server.
Anyone have an idea on this?

Colin, I updated your Form.IframeSubmit class to use try.these in the
onStateChange method, seems a little cleaner now.  I have a few other
changes planned, but no time.

http://pastie.caboo.se/51654

Thanks guys.

On 4/4/07, smellis <stephan.ellis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
>
> Colin,
>   Have you tested the code with internet explorer 7?  It does not seem
> to work for me.  I will look into it and let you know if I get it
> working. -stephan
>
> On Apr 3, 9:05 am, "Stephan Ellis"
<stephan.el...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > Wow, that''s nice.  Thanks dude!  I will let you know if I
change
> anything.
> > -stephan
> >
> > On 4/3/07, Colin Mollenhour
<eliteii...-NPSFNn/7+NYVo650/ln6uw@public.gmane.org> wrote:
> >
> >
> >
> >
> >
> > > Here is what I use:http://pastie.caboo.se/50410
> > > Not the best code, I know, but it works so I haven''t
fiddled with it
> > > anymore. If you make some improvements to it let me know!
> >
> > > Colin
> >
> > > smellis wrote:
> > > > Hi All,
> >
> > > >   I am working on a file management widget and it''s
starting to get
> > > > exciting thanks to prototype.   Anyway, I want to implement
> > > > asynchronous file uploads.  I realize that I can''t
do this with
> > > > Ajax.Request, or can I? (let me know if I am wrong).  I
searched the
> > > > interweb looking for example techniques and I found that
some people
> > > > are using a hidden iframe with a form in it.  They then
submit the
> > > > form from the iframe so that the use does not perceive a
page load.
> > > > This seems like the way to go.
> >
> > > > The Problem
> > > >   Since this is a "widget", I am dynamically
creating all of the
> > > > elements via a class (see my previous thread:
> >
> >
>http://groups.google.com/group/rubyonrails-spinoffs/browse_thread/thr.
> ..
> > > )
> > > > so that anyone who uses it can just make an instance of my
class and
> > > > it magically works (with the appropriate server backend of
course).
> > > > The problem is, when I create an iframe using
> > > > document.createElement(iframe), I am not sure how to keep
creating
> > > > elements within the iframe.  Does anyone know how to
properly access
> > > > the DOM of an iframe in a cross browser manner?  I
don''t think
> > > > prototype offers anything specifically for iframes (am i
wrong
> > > > again?).
> >
> > > > Here is what I have so far.
> > > > This is a little snippet from my class that builds the
structure for
> > > > the widget.  This particular part is where the iframe is
created.
> >
> > > > //This is the hidden IFRAME for file uploads
> > > > this.hiddenContainer =
document.createElement(''div'');
> > > >
$(this.hiddenContainer).setStyle({display:''none''});
> > > > this.container.appendChild(this.hiddenContainer);
> > > > this.fileUploadIframe =
document.createElement(''iframe'');
> > > > this.hiddenContainer.appendChild(this.fileUploadIframe);
> > > > //this.fib is hopefully the document object for the iframe
> > > > this.fib = this.fileUploadIframe.contentDocument;
> >
> > > > //This is the form in the IFRAME
> > > > this.fileUploadForm =
document.createElement(''form'');
> > > > this.fileUploadForm.setAttribute(''method'',
''get'');
> > > > this.fileUploadForm.setAttribute(''action'',
''/error'');
> > > > //here I am trying to add my form to the body of the
document in the
> > > > iframe
> > > > this.fib.body.appendChild(this.fileUploadForm);
> >
> > > > If anyone needs to see my class in it''s entirety,
just let me know.
> >
> > > > thanks in advance!
> >
> > > > -stephan
> >
> > --
> > ------------------------------
> > To the government spies reading my email:
> > Lick my balls assholes!
> > ------------------------------
>
>
> >
>
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Robin Haswell

2007-Apr-04 16:09 UTC

head link

Re: prototype.js: Asynchronous File Uploads

Stephan Ellis wrote:> I think the problem I am running into is that IE7 is not seeing my
> dynamically created file input fields.  I turned on logging server side
> and I noticed that none of my file upload fields are being sent to the
> server.  Anyone have an idea on this?
Hi mate

Sorry not been following your thread, just caught this message in my
general E-mail.

This is throwing up big flags in my brain - "Have you included
enctype="multipart/form-data"?

As you know, in order to get a file upload to work you need to have
<form .. enctype="multipart/form-data"> .. </form>.

That said I really wouldn''t be surprised if IE was knocking you back
for
touching <input type="file"> elements with JavaScript...
there''s so much
potential for abuse if the security policy''s a little off.

Thanks

-Rob

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Stephan Ellis

2007-Apr-04 18:32 UTC

head link

Re: prototype.js: Asynchronous File Uploads

I didn''t think about internet explorer''s security issues, but
gmail does the
same thing I have been trying to accomplish.  I do have the enctype set to
multipart/form-data on all my input fields.  Interesting...

On 4/4/07, Robin Haswell
<rob-gyMb1R/nBgNh8AIihN9Rc9BPR1lH4CV8@public.gmane.org>
wrote:>
>
> Stephan Ellis wrote:
> > I think the problem I am running into is that IE7 is not seeing my
> > dynamically created file input fields.  I turned on logging server
side
> > and I noticed that none of my file upload fields are being sent to the
> > server.  Anyone have an idea on this?
>
> Hi mate
>
> Sorry not been following your thread, just caught this message in my
> general E-mail.
>
> This is throwing up big flags in my brain - "Have you included
> enctype="multipart/form-data"?
>
> As you know, in order to get a file upload to work you need to have
> <form .. enctype="multipart/form-data"> .. </form>.
>
> That said I really wouldn''t be surprised if IE was knocking you
back for
> touching <input type="file"> elements with JavaScript...
there''s so much
> potential for abuse if the security policy''s a little off.
>
> Thanks
>
> -Rob
>
> >
>
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Rails spinoffs - Mar 2007 - prototype.js: Asynchronous File Uploads

prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads

Re: prototype.js: Asynchronous File Uploads