Capture Form Variables and Generate URL-Friendly Concatenated Name-Value Pairs
Problem
You need to dynamically capture form variables, and then auto-magically generate url-friendly name value pairs of each form field. In fact, you might need to ignore certain form fields too!
Solution
Using a simple user-defined function (UDF), you can easily generate url-friendly concatenated name-value pairs of form fields.
Detailed explanation
Include the following user-defined function (UDF) on the page where you need to capture form fields and generate url-friendly concatenated name-value pairs:
<cffunction name=
"formToNameValuePairs"
returntype=
"string" output=
"false" access=
"remote"
hint=
"pass me a form and i'll generate
concatenated name-value pairs.">
<cfargument name=
"formStruct" type=
"struct" required=
"true" hint=
"the form struct to parse and
concatenate" />
<cfargument name=
"doNotProcessList" type=
"string" required=
"false" hint=
"a list of form fields to
ignore" default=
"" />
<cfset
var local = structNew()
/>
<cfset
local.nameValuePairs =
"" />
<cfset
local.doNotProcess =
arguments.doNotProcessList />
<cfset
local.field =
"" />
<cfif
structKeyExists(arguments,
"formStruct") and
structKeyExists(arguments.formStruct,
"fieldnames")>
<cfloop list=
"#arguments.formStruct.fieldnames#"
index=
"local.field">
<cfif not
listFindNoCase(local.doNotProcess,local.field)>
<cfset
local.doNotProcess =
listAppend(local.doNotProcess,local.field) />
<cfset
local.nameValuePairs =
listAppend(local.nameValuePairs,lcase(local.field) &
"=" &
urlEncodedFormat(form[local.field],
"utf-8"),
"&")
/>
</cfif>
</cfloop>
</cfif>
<cfreturn
local.nameValuePairs />
</cffunction>
Here's an example of how to use the UDF:
<cfoutput>#formToNameValuePairs(form, "SUBMIT,ISSUBMITTED")# </cfoutput>
Here's a link to the original UDF on CFLib.org: http://cflib.org/udf/formToNameValuePairs
+
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License. Permissions beyond the scope of this license, pertaining to the examples of code included within this work are available at Adobe.
