Hi Andreou,
Well 1st of all thanks for the response to the mail.
I have created the corresponding files with the below mentioned
code... And also u have mentioned below to edit ValidationString.properties
this file and add an entry "unsupported-file-type={0} only supports files of
type {1}", as u have done.
But my question is - is that I create my own ValidationString.properties
file instead of adding an entry in the existing file which is there in the
tapestry jar file. And if I have created my own file, where do I am supposed
to place that file....
Also, I am using Tapestry4Beta4 version, is this feature enabled in
that...???
Please respond with solution,
Thanks in advance,
Regards,
Anjali
-----Original Message-----
From: Andreas Andreou [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 06, 2005 7:30 PM
To: Tapestry users
Subject: Re: Need help
Ok, here's the validator I mentioned before.
I'll ask if it can be included in directly into Tapestry.
For the moment, you have to add edit your hivemodule.xml, and add this
contribution:
<contribution configuration-id="tapestry.form.validator.Validators">
<validator name="accept" class="ebyz.web.validator.Accept"/>
</contribution>
Then you have to add an unsupported-file-type entry in
ValidationString.properties. Here's mine:
unsupported-file-type={0} only supports files of type {1}.
Then you can define your Upload component like this:
<component id="file" type="Upload">
<binding name="file" value="file"/>
<binding name="validators" value="validators:accept=jpeg-jpg-png"/>
<binding name="displayName" value="literal:Choose file"/>
</component>
And here is the java source. Note that it does both client side and
server side validation...
package ebyz.web.validator;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.TapestryUtils;
import org.apache.tapestry.form.FormComponentContributorContext;
import org.apache.tapestry.form.IFormComponent;
import org.apache.tapestry.form.ValidationMessages;
import org.apache.tapestry.form.validator.BaseValidator;
import org.apache.tapestry.multipart.UploadPart;
import org.apache.tapestry.util.RegexpMatcher;
import org.apache.tapestry.valid.ValidationConstraint;
import org.apache.tapestry.valid.ValidatorException;
public class Accept extends BaseValidator
{
private String accept;
public Accept()
{
}
public Accept(String initializer)
{
super(initializer);
}
public void setAccept(String acc)
{
accept = acc;
}
public void validate(IFormComponent field, ValidationMessages messages,
Object object) throws ValidatorException
{
UploadPart part = (UploadPart) object;
String name = part.getFileName();
String ext = name.toLowerCase();
int pos = ext.lastIndexOf(".");
if (pos >=0)
{
ext = ext.substring(pos+1);
}
if (accept.indexOf(ext) >= 0)
{
return;
}
throw new ValidatorException(buildMessage(messages, field),
ValidationConstraint.PATTERN_MISMATCH);
}
private String buildMessage(ValidationMessages messages,
IFormComponent field)
{
return messages.formatValidationMessage(
getMessage(),
"unsupported-file-type",
new Object[]
{ field.getDisplayName(), accept });
}
public void renderContribution(IMarkupWriter writer, IRequestCycle
cycle,
FormComponentContributorContext context, IFormComponent field)
{
context.includeClasspathScript("/org/apache/tapestry/form/validator/RegExVal
idator.js");
String toReg = accept.replace('-','|');
toReg = ".*\\.(" + toReg + ")$";
String pattern = new RegexpMatcher().getEscapedPatternString(toReg);
String message = buildMessage(context, field);
StringBuffer buffer = new StringBuffer("function(event) {
Tapestry.validate_regex(event, '");
buffer.append(field.getClientId());
buffer.append("', '");
buffer.append(pattern);
buffer.append("', ");
buffer.append(TapestryUtils.enquote(message));
buffer.append("); }");
context.addSubmitHandler(buffer.toString());
}
}
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