RE:INPUT FIELD ACCEPT ONLY SPECIAL CHARACTERS Apostrophe (`), Pound (#) , And (&) , space ,a-z,A-Z,0-9

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Hi,

> <xforms:bind
>      nodeset="/pathtonode"
>      constraint="matches( ., '^[0-9A-Za-z/\-]*$' )"/>
>
>  
> *Can u plz help as how can add some more special characters like
> Apostrophe (`), And (&),  Pound (#) , and space*
> *Here in this case i have an input field it should accept only
> Apostrophe (`), And (&),  Pound (#) , and space and a-z,A-Z,0-9*

I suppose you don't have to escape ', & or #, they are not listed as
metacharacters. For space, you could use a category escape: \p{IsZs}.
So you could try:

<xforms:bind
      nodeset="/pathtonode"
      constraint="matches( ., '^[0-9A-Za-z/-'&#\p{IsZs}]*$' )"/>

Again, not tested.

HTH
florian



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Gopikrishna,

But I think the strategy of using matches() and regular expressions
is the best strategy, so I suggest you keep trying.  There are
books on regular expression, such as Mastering Regular Expressions and
Regular Expressions Pocket Reference from www.oreilly.com that will
give you ideas.

You have to expect these expressions take time to write and debug.

So I _think_ the issue is just the regular expression and perhaps there
are lists that focus on RE which can be more help.

Cheers,
Hank


On Apr 14, 2008, at 10:45 PM, Reddy, Gopikrishna wrote:
>
> Hi Thanks for ur help  I have tried this but it does nt works can  
> anyone help
Hank Ratzesberger
NEES@UCSB
Institute for Crustal Studies,
University of California, Santa Barbara
805-893-8042







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Hi,

 > > I suppose you don't have to escape ', & or #, they are not listed as
 > > metacharacters. For space, you could use a category escape: \p{IsZs}.
 > > So you could try:
 > >
 > > <xforms:bind
 > >       nodeset="/pathtonode"
 > >       constraint="matches( ., '^[0-9A-Za-z/-'&#\p{IsZs}]*$' )"/>
 > >

> *Hi Thanks for ur help  I have tried this but it does nt works can
> anyone help

Sorry, i made a ugly mistake - of course the apostrophe has to be escaped in any
way, because otherwise it's treated as the delimiter for the RegEx. Sadly, i'm
just now in the middle of relocating, so i can't search for a solution at the
moment. For now, you could try to remove the apostrophe from inside the RegEx to
test if that was the cause.

HTH
florian


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Thanks in advance,

K Gopikrishna Reddy

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On Wed, Apr 16, 2008 at 4:20 AM, Reddy, Gopikrishna
<[hidden email]> wrote:
> Hi Thanks for ur help I have removed apostrophe  from RegEx as it works fine
> only for # how can i check for Apostrophe (`),  And (&)  space ,Plz do help
> me in this as it is very urgent tome

Have a look at the applet below. I might help you debug this and find
the appropriate regular expression for your case.

http://jakarta.apache.org/regexp/applet.html

Alex
--
Orbeon Forms - Web 2.0 Forms, open-source, for the Enterprise
Orbeon's Blog: http://www.orbeon.com/blog/
Personal Blog: http://avernet.blogspot.com/


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