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Function for if one field is entered, then they are all required

Posted on 2011-10-25
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Last Modified: 2012-05-12
I wanted to see if there was an easy way to create a function that takes in five fields (name, address, city, state, zip). If any one of the fields is entered, then all the fields are required. However, if they are all blank, then none are required.  Right now I have a series of if-else statements which is quite cumbersome.
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Question by:manicdiggity
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by:_agx_
ID: 37027346
CF function or javascript?
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LVL 52

Expert Comment

by:_agx_
ID: 37027373
... and what should this function do if one of the required fields is missing?
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Author Comment

by:manicdiggity
ID: 37027503
CF function. If one of the required fields is missing, it can just return text that all fields must be entered. Thanks!
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_agx_ earned 1000 total points
ID: 37027653
I'd recommend returning only true/false so it's a little more flexible.

<cfset success = isValidAddress(name="a",address="b",city="c",state="d",zip="e")>
<cfif NOT success>
      display your text ie all fields must be entered.
</cfif>

<cffunction name="isValidAddress" returntype="boolean">
	<cfargument name="name" type="string" required="false">
	<cfargument name="address" type="string" required="false">
	<cfargument name="city" type="string" required="false">
	<cfargument name="state" type="string" required="false">
	<cfargument name="zip" type="string" required="false">
	
	<cfset var key = "">
	<cfset var nonEmptyValues = 0>
	<cfloop collection="#arguments#" item="key">
		<cfif structKeyExists(arguments, key) and len(trim(arguments[key]))>
			<cfset nonEmptyValues = nonEmptyValues + 1>
		</cfif>
	</cfloop>	

	<cfif nonEmptyValues and nonEmptyValues lt structCount(arguments)>
		<cfreturn false >	
	<cfelse>	
		<cfreturn true>
	</cfif>
</cffunction>

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Author Closing Comment

by:manicdiggity
ID: 37027973
Thanks, that worked!
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