[opencms-dev] OpenCmsDate - problems reusing taglib tags

[Mathias Lin | SYSVISION]

Not looking at the code/issue directly (and why the editor breaks), the
approach looks little complicate. You don't need to write your own taglib in
order to format a timestamp.

You can just use the one below - never had any problems with that:

<%@ taglib prefix="dt" uri="http://jakarta.apache.org/taglibs/datetime-1.0"
%>

<cms:contentcheck ifexists="date_reference">
  <dt:format pattern="MM.yyyy"><cms:contentshow element="date_reference"
/></dt:format>
</cms:contentcheck>




Ruben Malchow-3 wrote:
> 
> 
> hi mathias,
> 
> thanks for the quick reply ... actually, there is no a lot of 
> sourceode, but what little there is:
> 
> the template looks like this:
> 
> 		<cms:contentload
> 			collector="singleFile"
> 			param="${file}"
> 			editable="true">
> 			
> 			<c:set var="date"><cms:contentshow element="date_reference"/></c:set>
> 				
> 			<!--  try to format the date -->
> 			<c:catch var="ex">
> 				<c:set var="date">
> 					<d:formatTimestamp 	
> 						pattern="yyyy-MM-dd" 	
> 						value="${date}"
> 					/>
> 				</c:set>
> 			</c:catch>
> 			
> 			${date}
> 
> 			<c:if test = "${ex!=null}">
> 				<!--
> 				${ex}	
> 				${ex.message}	
> 				 -->
> 			</c:if>		
> 			[...]
> 		</contentload>
> 
> 
> the schema is like this:
> 
> 	[...]
> 	<xsd:element
> 		maxOccurs="1"
> 		minOccurs="1"
> 		name="date_reference"
> 		type="OpenCmsString" />
> 	[...]
> 
> 	
> 	[...]
> 	<mapping
> 		element="date_reference"
> 		mapto="attribute:datereleased" />
> 	[...]
> 
> 
> and the tag used basically does this:
> 
> 	public int doEndTag() throws JspException {
>   		try {
>   			long l = Long.parseLong(value);
>   			SimpleDateFormat sdf =
> 				new SimpleDateFormat(pattern);
> 			pageContext.getOut().print(
> 				sdf.format(new Date(l)));
> 		} catch (Exception e) {
> 			e.printStackTrace();
> 		}
> 		return super.doEndTag();
> 	}
> 
> 
> so ... the problem is that after the template is called once with a 
> undefined date_reference field, the date/time widget in the backend will 
> not work anymore ... instead, the editor will display a simple text field.
> 
> .rm
> 
> 
> 
> Mathias Lin | SYSVISION wrote:
>> Hi Ruben,
>> you should post the source code / jsp code directly, otherwise it's hard
>> to
>> help.
>> Regards, Mathias
>> 
>> 
>> Ruben Malchow-3 wrote:
>>>
>>>
>>> hello list.
>>>
>>> i am running into a somewhat strange problem. ocms is 7.0.5.
>>>
>>> i have a field in a schema that is a date. i also have a template that 
>>> displays this date as part of the headline of an article. to format 
>>> this, i have a little jsp tag that takes a pattern and a long value and 
>>> formats tries to format the value according to the pattern. in my 
>>> template, this tag is surrounded by a jstl try/catch thing (so if it 
>>> doesn't work, the result is just an empty string).
>>>
>>> now what happens is this: if i call the template with a cotent xml which 
>>> doesn't have the date set yet, it displays as expected, so instead of 
>>> the date, there is an empty string. BUT: it also breaks the editor. 
>>> meaning that when i go back to set the date, the datetime widget is 
>>> gone. until i restart the tomcat.
>>>
>>> any ideas? i have no idea where to start looking ... my tag doesn't even 
>>> use any ocms classes, it just instantiates a SimpleDateFormat.
>>>
> 
> 
> 


-----
Mathias Lin
SYSVISION Ltd., China
http://www.sysvision.com
-- 
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