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date validation in coldfusion 7

Posted on 2009-07-08
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Last Modified: 2013-12-24
hi, i have tow dates, Start date and end date. if user selects start date as 07/01/09 and end date as 07/08/09, then it's valid. but right now my code doesn't validate if user enters start date as 07/15/09 and end date as 07/10/09. end date must have to be a future date (or grater then start Date). how can i validate this in coldfusion. all i need a server side validation. see the action script below, which enables user to select date from today to future. the script is fine, but i need server side validation for user, so that an end date must have to be grater then start date. please provide some code or references.
<cfoutput>		
			<cfformitem type="script">
	                function runOnLoad() 
	                {
	                        var dateString = "#dateFormat(now(), 'yyyy-mm-dd')#";
	                        var startAfter = mx.formatters.DateFormatter.parseDateString(dateString);
	                        start_date.selectableRange={rangeStart: startAfter};    
							end_date.selectableRange={rangeStart: startAfter}; 
	                }
	        </cfformitem>
		</cfoutput>

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Question by:khan02
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4 Comments
 
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Expert Comment

by:_agx_
ID: 24806101
Do you mean CF code (server) or cfform actionscript (client)?

For server side, you can use the DateCompare() function to determine if the startDate is _greater_ than the endDate.

<!--- should also validate values are valid date strings --->
<cfset form.startDate = "07/15/2009" >
<cfset form.endDate = "07/10/2009">

<!--- if startDate is GREATER than endDate --->
<cfif dateCompare(form.startDate, form.endDate) eq 1>
      StartDate cannot be greater than EndDate
<cfelse>
       Okay. StartDate is less than or equal to EndDate
</cfif>
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Author Comment

by:khan02
ID: 24808050
i am so grateful that you have replied so quick, i just realized that, i do need client side validation as well.

the above code you send is for server side validation. can you provide me code for client side validation as well.

regards
khan

thank you once again.
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LVL 53

Accepted Solution

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_agx_ earned 2000 total points
ID: 24809253
I assume you are using two "datefields"?  If so you can grab the "selectedDate" values.  The value is already a "Date" object. So you should be able to compare them using the  > operator.
<cfform name="x" format="flash" onLoad="runOnLoad()" onsubmit="return CheckDates();">
	<cfoutput>              
	<cfformitem type="script">
		function CheckDates() 
		{
			if (start_date.selectedDate != undefined && end_date.selectedDate != undefined) 
			{
				if (start_date.selectedDate > end_date.selectedDate) 
				{
					alert("StartDate cannot be GREATER than EndDate");
					return false;
				}
			}
			return true;
		}
		
    	function runOnLoad() 
        {
        	var dateString = "#dateFormat(now(), 'yyyy-mm-dd')#";
            var startAfter = mx.formatters.DateFormatter.parseDateString(dateString);
            start_date.selectableRange={rangeStart: startAfter};    
            end_date.selectableRange={rangeStart: startAfter}; 
            }
	</cfformitem>
    </cfoutput>
	<cfinput type="datefield" name="start_date">
	<cfinput type="datefield" name="end_date" value="2009-07-10">
	<cfinput type="submit" name="submitButton">
</cfform>

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Author Closing Comment

by:khan02
ID: 31601225
grate solution...thank you very much
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