Dynamic Action On Date Picker

Hi,
I need help with understanding dynamic actions. I have two date pickers, I want the value of the first date picker to be the minimum date of the second date picker. To achieve this I have a hidden item whose value I want to reflect the selected date in the required format. In the dynamic action on the date picker I have no condition, and the true action is set to execute the following pl/sql code
:P200220000_Y_MIN_DT := TO_CHAR(TO_DATE(:P200220000_Y_STR, 'DD-MON-YYYY'), 'YYYYMMDDHH24MI');. The items to submit field contains both the first date picker and the hidden item.
The "P200220000_Y_MIN_DT" is now passed into the minimum date field of the second date picker. The problem is when the date is changed the hidden item does not get the value until the page is refreshed.
Am I doing something wrong or just have not mastered the use of dynamic action or are my colleagues right use AJX call backs not dynamic actions.
Thanks
Aderemi

Hi Aderemi,
first of all as already explained, the min/max values are already used on the server side when the necessary code for the date picker is rendered. When you changed the referenced values in the browser, these values will not change the behavior of the client side date picker widget. But when you submit the page, the new min/max values will be used by the date picker validation check on the server.
To over the client side date picker display issue, you could directly call the date picker JavaScript code and pass in the new min/max values. Have a look at http://jqueryui.com/demos/datepicker/
So for example you could have a dynamic action of type "Execute JavaScript code" which executes the following Javascript code.
apex.jQuery('#P200220000_MY_DATE_PICKER').datepicker("option", "minDate", "-1m");I think that should work. Note: I haven't tested if that really works and it's also some kind of unsupported, because it uses the underlaying jQueryUI APIs the APEX date picker is using. This could change in the future and would invalidate your code.
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins

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http://patelkartik.blogspot.com/
http://apex.oracle.com/pls/apex/f?p=9904351712:1

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My Blog: http://www.inside-oracle-apex.com
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bundles of thanks for reply. i m going to elaborate.
1. My page no is 3.
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