On Wed, 24 Apr 2002, Tim Moore wrote:
> Date: Wed, 24 Apr 2002 14:22:04 -0400
> From: Tim Moore <[EMAIL PROTECTED]>
> Reply-To: Struts Developers List <[EMAIL PROTECTED]>
> To: Struts Developers List <[EMAIL PROTECTED]>
> Subject: RE: forEach compared to logic:iterate
>
> <c:forEach var="pageInfo" items="${topicForm.pages}">
> <c:declare id="pageInfo" type="<package>.PageForm"/>
> <html:link forward="getPage" name="pageInfo" property="pageTopicMap"
> title="<%=pageInfo.getName()%>">
> <c:out value="${pageInfo.pageSequence + 1}"/>
> </html:link>
> </c:forEach>
>
> The important part is the c:declare, which defines the scripting
> variable (var attributes in other tags don't). Also the type attribute
> lets you remove the cast from the scriptlet.
>
> You could also use bean:define, but if you're migrating away from Struts
> tags, you'll probably want to do it this way.
A more fundamental issue is that JSTL tags like <c:define> do not expose a
scripting variable at all -- they only create an attribute in the
appropriate scope. Therefore, the scriptlet in the code below will never
work unless you use <bean:define> instead (which creates both an attribute
and a scrpting variable.
> --
> Tim Moore / Blackboard Inc. / Software Engineer
> 1899 L Street, NW / 5th Floor / Washington, DC 20036
> Phone 202-463-4860 ext. 258 / Fax 202-463-4863
>
Craig
>
> > -----Original Message-----
> > From: Matt Raible [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, April 24, 2002 1:01 AM
> > To: 'Tag Libraries Users List'
> > Cc: 'Struts Developers List'
> > Subject: c:forEach compared to logic:iterate
> >
> >
> > I'm using the logic:iterate tag in the following manner:
> >
> > <logic:iterate id="pageInfo" name="topicForm" property="pages">
> > <html:link forward="getPage"
> > name="pageInfo" property="pageTopicMap"
> > title="<%=((PageForm)pageInfo).getName()%>">
> > <c:out value="${pageInfo.pageSequence + 1}"/>
> > </html:link>
> > </logic:iterate>
> >
> > Which works great! However, I was hoping to migrate my logic
> > tags to JSTL and the following doesn't work:
> >
> > <c:forEach var="pageInfo" items="${topicForm.pages}">
> > <html:link forward="getPage"
> > name="pageInfo" property="pageTopicMap"
> > title="<%=((PageForm)pageInfo).getName()%>">
> > <c:out value="${pageInfo.pageSequence + 1}"/>
> > </html:link>
> > </c:forEach>
> >
> > However, I get the following error when I try this:
> >
> > [ServletException in:/viewer/coursePage.jsp] Unable to
> > compile class for JSP An error occured between lines: 83 and
> > 84 in the jsp file: /viewer/coursePage.jsp Generated servlet error:
> > D:\Tools\tomcat-4.0.1\work\localhost\onpoint\viewer\coursePage
> > $jsp.java:
> > 743: Undefined variable: pageInfo
> > _jspx_th_html_link_0.setTitle(((PageForm)pageInfo).getName());
> > ^ 1 error '
> >
> >
> >
> >
> > --
> > To unsubscribe, e-mail:
> > <mailto:struts-dev-> [EMAIL PROTECTED]>
> > For
> > additional commands,
> > e-mail: <mailto:[EMAIL PROTECTED]>
> >
> >
>
> --
> To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
>
>
--
To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
