OpenCmsDate - problems reusing taglib tags

[Ruben Malchow-3]

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.

.rm

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[Mathias Lin | SYSVISION]

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.

.rm

[Ruben Malchow-3]

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

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[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.
>>