Hi,
Let me tell the scenario what I want...
When I select any file other than gif, it should populate the client side
message something like what you have given "unsupported-file-type={0} only
supports files of type {1}." And donnt want any server side validation on
file type..
So as per your below code, I have done the following coding,
---------------------------------------------------------------------------
In my .page file, I have done following changes:
<component id="uploadForm" type="Form">
<binding name="listener" value="listener:onSubmit"/>
<binding name="clientValidationEnabled" value="true"/>
</component>
<component id="upload1" type="Upload">
<binding name="file" value="file1"/>
<binding name="validators" value="validators:accept=jpeg-jpg-png"/>
<binding name="displayName" value="literal:Choose file"/>
</component>
----------------------------------------------------------------------------
I have created a Accept.java file, and the code in that is:
package xxx.yyy.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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;
/**
* Util class for saving and loading image files and getting unique file
name
* @author ananyag
*
*/
public class Accept extends BaseValidator
{
protected final Log logger = LogFactory.getLog(getClass());
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
{
logger.debug("start of Accept Validate method class");
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)
{
logger.debug("start of Accept - buildMessage method");
return messages.formatValidationMessage(
getMessage(),
"unsupported-file-type",
new Object[]
{ field.getDisplayName(), accept });
}
public void renderContribution(IMarkupWriter writer, IRequestCycle
cycle, FormComponentContributorContext context,
IFormComponent field)
{
logger.debug("start of Accept - renderContribution method");
context.includeClasspathScript("/org/apache/tapestry/form/validator/RegExVal
idator.js");
logger.debug("after calling js of Accept - renderContribution
method");
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.addSubmitListener(buffer.toString());
logger.debug("end of Accept - renderContribution method");
}
}
-----------------------------------------------------------------------
I have edited my hivemodule.xml like this:
<module>
<contribution configuration-id="tapestry.form.validator.Validators">
<validator name="accept" class=" xxx.yyy.util.Accept"/>
</contribution>
</module>
-------------------------------------------------------------------------
I Have created a new file, ValidationStrings.properties and I have placed
this file under WEB-INF(in the same level where my other .html and .page
files are) and the content is:
field-is-required=You must enter a value for {0}.
field-too-short=You must enter at least {0} characters for {1}.
invalid-date-format=Invalid date format for {0}. Format is {1}.
invalid-int-format={0} must be an integer value.
invalid-format={0} is not in a recognized format.
invalid-numeric-format={0} must be a numeric value.
date-too-early={0} must be on or after {1}.
date-too-late={0} must be on or before {1}.
number-too-small={0} must not be smaller than {1}.
number-too-large={0} must not be larger than {1}.
number-range={0} must be between {1} and {2}.
invalid-email-format=Invalid email format for {0}. Format is [EMAIL PROTECTED]
pattern-not-matched={0} does not fulfill the required pattern {1}.
invalid-url-format = Invalid URL.
disallowed-protocol = Disallowed protocol - protocol must be {0}.
### 4.0 ###
select-field-is-required=You must select a value for {0}.
file-field-is-required=You must select a file to upload.
field-too-long=You must enter no more than {0} characters for {1}.
date-too-small={0} may not be earlier than {1,date}.
date-too-large={0} may not be later than {1,date}.
regex-mismatch={0} is invalid.
invalid-field-equality={0} must be {1,choice,0#different from|1#the same as}
{2}.
unsupported-file-type={0} only supports files of type {1}.
---------------------------------------------------------------------------
with all these codes, its not working.... The page is not breaking, but no
effect also....
Can you point out where I went wrong, and What else I need to do to make it
work...
I am using, tapestry4Beta4.o version...
Please help, since I has become my work stopper...
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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