How to make drop-down required

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November 3rd, 2004, 10:55 PM

Alas

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How to make drop-down required

Question i made a form that makes textboxes required and makes a popup appear if submit is hit and the textbox is empty, how do i do this same thing for drop-down menus?

Heres what im using for the textboxes.

Code:

<cfinput 
        name="Name" 
        size="9"
        required="Yes"
        maxlength="50"
        message="Please enter your name."
        value="#SESSION.Alas.Name#">

Heres what i have for the drop-down

Code:

<select name="Variable">
                 <option value="Yes">Yes</option>
                 <option value="No">No</option>
          </select>

-Alas

November 4th, 2004, 07:42 AM

Alas

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Ill take any ideas, "beggars can't be choosers"

November 4th, 2004, 08:27 AM

kiteless

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You'll want to set a Javascript alert to fire onBlur(), which is when focus is removed from the select box.

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November 4th, 2004, 02:35 PM

machito

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kiteless is right. You can only achieve this with JavaScript; since ColdFusion does not have, I think, the "required" atribute for drob down menus.

November 10th, 2004, 01:40 PM

Drooling Dog

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Correct. This has been a pet peeve of mine for many years now. You can do it with server-side validation, just not client-side.

For server-side, try this for your dropdown:

Code:

<select name="Variable">
   <option selected value="">Choose One...</option>
   <option value="Yes">Yes</option>
   <option value="No">No</option>
</select>

Then include this anywhere between the form tags:

Code:

<input type="hidden" name="Variable_required" value="A response to whatever is required.">

November 12th, 2004, 02:26 PM

Ebot

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Why not use <cfeslect>? it gives you the required option and the meassage built into the object.

November 16th, 2004, 01:15 AM

4thorder

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please clarify

I dont think I totally understand the question. The way you have that drop-down written there must be an answer of yes or no. This forces an answer. Do you want to warn if it is no?

I would add "selected" to one of the answers.

Code:

<select name="Variable" size="1">
<option value="Yes" selected>Yes</option>
<option value="No">No</option>
</select>

November 16th, 2004, 02:36 PM

Bastion

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Quote:

Originally Posted by Ebot

Why not use <cfeslect>? it gives you the required option and the meassage built into the object.

Ebot's right. Check out http://livedocs.macromedia.com/coldfusion/5.0/CFML_Reference/Tags91.htm

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