Solved

specifying value for checkbox when unchecked

Posted on 2003-11-19
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678 Views
Last Modified: 2010-04-09
I have a checkbox as follows

<INPUT TYPE="checkbox" NAME="replacement" value="yes" <%if(replacement.equalsIgnoreCase("yes")) { %>checked<% } %> onclick="SetState(this, this.form.details)" >

The "replacement" value is derived from database. If the replacement is "yes" then checkbox is displayed as checked otherwise unchecked. the problem is whenever the checkbox is unchecked null goes as its value. I want "yes" to go into the database(on submitting the form) when it is checked and "no" when it is unchecked.
plz help.
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Question by:stallon123
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5 Comments
 
LVL 11

Assisted Solution

by:Zontar
Zontar earned 125 total points
ID: 9777490
Unchecked checkboxes don't get submitted with forms. If you need an "off" value, either use a pair of radiobuttons (with one of them checked by default so the user can't submit the form without one of the two being checked) or test specifically for the null value:

<%
  If IsNull(Request.Form("replacement")) Then
    Replacement = "no"
  Else
    Replacement = Request.Form("replacement")
  End If
%>

or whatever the equivalent is in the language you're using (JSP I suspect?).
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LVL 33

Accepted Solution

by:
knightEknight earned 125 total points
ID: 9779440
or, similarly in JSP:

String replacement = request.getParameter("replacement");
if ( replacement == null )
   replacement = "No";
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LVL 11

Expert Comment

by:Zontar
ID: 9779550
Thanks, I've never worked with JSPs, just PHP, ASP, and a bit of Python and CF here and there.
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LVL 33

Expert Comment

by:knightEknight
ID: 9781389
and I've done nothing but JSP and ASP :)
0
 

Author Comment

by:stallon123
ID: 9784970
thanks
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