Hi All
I'm trying out with a new approach of validating the form submission using
a tag library.I went through the code base and found out that appfuse.tld is
the centralized custom tag library which has defined some tag libraries
such as FormatDate in it.So Far all these validations are limited to the
view but not involving the form submission process. I wonder how we can
write a custom lag library which can use in the form validation in the
submition level.When I debuged the Formatdate tag library class when the
form is load .It calls only when the page is load but not at time after we
submit it.I wonder a approach of writing tag library/reference API to handle
the tag libraries after submitting the form.Any idea will be greatly
appreciated.
Thanks
Kanchana
Kanchana wrote:
>
> Hi All
>
> I'm hitting my head against to the wall to do a filed length validation
> using a custom tag library in appfuse 2 .I saw many of the default tld
> are defined in the WEB-INF/appfuse.tld and those are simulated in view jsp
> using taglib.jsp.So accordingly i also tried adding a new tag lib class in
> the web/src/java/taglib and have the tag defined in the appfuse.tld.i
> packaged the project and deployed assuming the rest of the configurations
> are done automatically and I called the tag lib in the jsp using
> followings
>
> <%@ include file="/common/taglibs.jsp"%> and ad follows
>
> TravelLocation is a model classes which as a travelLocationId and name as
> properties and my tag lib name is nullValuesTag which i defined in the
> appfuse.tld.But unfortunately i don't see the validation is happening and
> I don't see the out put.I did the validation for the length of the travel
> location name property which defined as 20 characters in the DB.Can any
> one please help me to figure out how to write custom validation in appfuse
> whether my approach is correct.
>
> FYI: in the taglib.jsp i have pass the key values of nullValuesTag.length
> to applicationRescources.properties files.I'm not sure how this properties
> file is read at run time and i hoped to see the message when the
> validation is correctly done
>
> Thanks and regards
> Kanchana
>
>
> code piece from the jsp to call the tag lib
> ----------------------------------------------
>
> <spring:bind path="travelLocation.travelLocationId">
> <input type="hidden" name="id" value="<c:out value="${status.value}"/>"/>
> </spring:bind>
> <div class="content_table">
> <p>
> <div class="form_table_column1" >
>
> <appfuse:label styleClass="desc" key="travlLocation.name"/>
> </div>
> <div class="form_table_column2">
>
>
> <spring:bind path="travelLocation.name">
>
> <appfuse:nullValuesTag value="<%=request.getParameter("name")%>"
> key="">
> </appfuse:nullValuesTag>
>
> <input class="TextField" type="text" name="name" id="name"
> value="<c:out value="${status.value}"/>" />
> </spring:bind>
> </div>
> </p>
>
>
> Appfuse.tld code piece.
> ----------------------------------------------------------------------------------
> <tag>
>
> <name>nullValuesTag</name>
>
> <tagclass>lk.mazarin.lgs.webapp.taglib.NullValuesTag</tagclass>
>
> <bodycontent>JSP</bodycontent>
>
> <info>tests zip code</info>
>
>
>
> <attribute>
>
> <name>value</name>
>
> <required>true</required>
>
> <rtexprvalue>true</rtexprvalue>
>
> </attribute>
>
>
>
> <attribute>
>
> <name>length</name>
>
> <required>false</required>
>
> <rtexprvalue>true</rtexprvalue>
>
> </attribute>
>
> </tag>
> =======================================
> NullValuesTag.java
>
> package lk.mazarin.lgs.webapp.taglib;
>
> import java.io.IOException;
> import java.util.Date;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.jsp.JspException;
> import lk.mazarin.lgs.util.DateUtil;
>
>
> import org.springframework.web.servlet.support.RequestContext;
>
> /**
> * <p>This class is designed to render a formatted date tag in the format
> * the user's locale has speficied.</p>
> *
> * <p>It is designed to be used as follows:
> * <pre><tag:date value="comman.datefield" /></pre>
> * </p>
> *
> * @jsp.tag name="date" bodycontent="empty"
> */
>
> public class NullValuesTag extends TemplateTag {
> private String value;
> private int length;
>
> public NullValuesTag() {
> value = null;
> length = 1;
> }
>
> public int doStartTag() throws JspException {
>
> if (value == null)
> return 1; //check if we have zip code
> if (value.equals(null))
> return 1; //check if value is not null
>
> if (value.length()> 20) {
> //has to be an integer! short case of zip code xxxxx
> try {
> Integer.parseInt(value);
> return 0;
> } catch (NumberFormatException e) {
> return 1;
> }
> }
>
> /*else if (value.length() == 10) {
> // long case on Zip code xxxxx-xxxx
> String part1 = value.substring(0, 5);
> String dash = value.substring(5, 6);
> String part2 = value.substring(6);
> if (!dash.equals("-"))
> return 1;
> try {
> Integer.parseInt(part1);
> Integer.parseInt(part2);
> return 0;
> } catch (NumberFormatException e) {
> return 1;
> }
> }*/
> return 1;
> }
>
> public int getLength() {
> return length;
> }
>
> public String getValue() {
> return value;
> }
>
> public void release() {
> value = null;
> length = 1;
> }
>
> public void setLength(int i) {
> length = i;
> }
>
> public void setValue(String s) {
> value = s;
> }
> }
>
>
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