On Tue, 09 Jun 2015 19:01:33 -0300, Stephen Nutbrown <steves...@gmail.com>
wrote:
Hi,
Hi!
I saw some posts on StackOverflow about validating files using
JavaScript's
files api (it looks fairly new so may not be suitable for projects which
need to support old browsers):
https://www.google.co.uk/url?sa=t&source=web&rct=j&ei=omB3Vb_MKKi07QbRvoDYBQ&url=http://stackoverflow.com/questions/3717793/javascript-file-upload-size-validation&ved=0CB0QFjAA&usg=AFQjCNGck_7qB8b7VzFExHQM72vzF6JxZA&sig2=XgAbDcP-E8-daXfAyP0tEg
Interesting! Thanks! I learned something new today . . .
Some time ago I implemented a client side twitter validator to check the
length of text field values (it gets a bit complicated because links
count> as fewer characters etc).
Twitter has a JS library that does this character counting, so it's just a
matter of copying and adapting the MaxLength validator from Tapestry.
I can have a go at doing the same for the
fileuploader and can put whatever I make up on github somewhere.
Don't forget to post an announcement here. :)
It won't
work on old browsers as per:
https://www.google.co.uk/url?sa=t&source=web&rct=j&ei=Y2F3Vbf0IIet7AarkoLgBA&url=http://caniuse.com/fileapi&ved=0CB0QFjAA&usg=AFQjCNEufMjex_NEpHKkWV7k-pakFWDNJQ&sig2=-hTtFzGroBPZc9w0v1bGIA
I'm a bit surprised that this doesn't exist,
What's "this"? :)
I thought it would and so I
expected that I was doing something horribly wrong. I'll come back when I
have it working as it may help others.
Thanks,
Steve
On 9 Jun 2015 20:06, "Thiago H de Paula Figueiredo" <thiag...@gmail.com>
wrote:
On Tue, 09 Jun 2015 14:39:54 -0300, Stephen Nutbrown
<steves...@gmail.com>
wrote:
Hi Thiago,
Hi!
That's interesting. Perhaps the documentation wants updating. It says:
"Note the importance of return this;. A void event handler method, or
one that returns null, will result in the FileUploadException being
reported to the user as an uncaught runtime exception."
https://tapestry.apache.org/uploading-files.html
Not returning "this" isn't just for uploading exceptions: it's for all
event handler methods, so I don't think it makes sense to put this
warning
in uploading-files.html.
In your original code, returning "this", if you annotated your field
with
@Persist(PersistenceConstants.FLASH), the message would appear. In this
very case, it appears to be the right thing to do (return "this"), as
otherwise Tapestry still considers the event as not handled and the
generic
exception handling is used.
--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br
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