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6.0

dynamic dropdown menu population

Asked by alh1 in ColdFusion Application Server

Tags: dropdown, coldfusion, dynamic, menu

Does anyone know a neat way of populating menu box(es) at runtime from queries ?
I have a form with two dropdown menus, province and city.
The province menu is populated on form load, but defaults to the province of "Any"
The city menu is not populated on form load, it just displays "Any"
When the province is changed, the city menu should change to display a list of cities in that province,
but the selected city should be "Any" ("Any" has been entered into the city table as a valid city)
I am using these queries at present:

<cfquery name="qryprovince" datasource="dsCountry">
SELECT * FROM province
ORDER by id
</cfquery>

<cfquery name="qrytown" dataSource="dsCountry" >
SELECT city
FROM city
WHERE province = '#province.value#'
ORDER by city
</cfquery>

Question is, how to call the qrytown query in an onChange event ? Can I wrap the query in a function, if so how do I output the query results to setup the dropdown menu ?
Is it something like :

<cfoutput>
<select name="landtown">
<option value=#function(province.value)# >#function(province.value)#</option>
</select>
</cfoutput>

I am new to Coldfusion so there may be an easy way to do this.
Appreciate any help,
Al

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20091021-EE-VQP-81

dynamic dropdown menu population

Asked by alh1 in ColdFusion Application Server

Tags: dropdown, coldfusion, dynamic, menu

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