This however works
<cfset test(1, 2) />
<cffunction name="test">
<cfoutput>#structCount(arguments)#</cfoutput>
<cfdump var="#arguments#" />
<cfoutput>#structKeyExists(arguments, 'a3')#</cfoutput>
</cffunction>
OUTPUTS
2
struct
1
1
2
2
NO
So it seems that when you use <cfargument your semi creating a structure of
arguments that kind of half exist.
Regards
Dale Fraser
http://dale.fraser.id.au
http://cfmldocs.com
http://learncf.com
http://flexcf.com
From: cfaussie@googlegroups.com [mailto:cfaussie@googlegroups.com] On Behalf
Of Paul Kukiel
Sent: Thursday, 5 January 2012 4:37 PM
To: cfaussie@googlegroups.com
Subject: Re: [cfaussie] Count the number of arguments passed into a
function.
I see what your saying now. Yeah seams wierd
Paul
On 5/01/2012 4:29 PM, Dale Fraser wrote:
Take this simple example, there is clearly a bug in some of these CF
functions
<cfset test(1, 2) />
<cffunction name="test">
<cfargument name="a1" />
<cfargument name="a2" />
<cfargument name="a3" />
<cfargument name="a4" />
<cfoutput>#structCount(arguments)#</cfoutput>
<cfdump var="#arguments#" />
<cfoutput>#structKeyExists(arguments, 'a3')#</cfoutput>
</cffunction>
OUTPUTS
4
struct
A1
1
A2
2
A3
undefined
A4
undefined
NO
So
structCount counts it
<cfdump can display it
structKeyExists says it doesn't exist
So it kind of half exists.
Regards
Dale Fraser
http://dale.fraser.id.au
http://cfmldocs.com
http://learncf.com
http://flexcf.com
-----Original Message-----
From: cfaussie@googlegroups.com [mailto:cfaussie@googlegroups.com] On Behalf
Of Paul Kukiel
Sent: Thursday, 5 January 2012 4:12 PM
To: cfaussie@googlegroups.com
Subject: Re: [cfaussie] Count the number of arguments passed into a
function.
It looks like you trying to access a property ( messageId ) of the instance
with
<cfif structKeyExists(messageCFC, "messageid")>
presuming messageCFC is an instance of message ?
Paul
On 5/01/2012 3:54 PM, Gavin Baumanis wrote:
> Hi there,
> Let me explain what I am trying to do,
>
> the executive summary is that I want to count the number of arguments
> passed into a function.
> anyFunction(), might have 10 cfargument properties assigned to it.
> But if I call;
> anyFunction(arg1="1", arg2="2")
>
> Then I somehow want to be able to retrieve the value 2 (2 passed in
> variables).
>
> Why,
> Because I have a getObject method.
> getObject is basically a cfquery and I filter the results of the
> query, based on the arguments passed in.
> so if I have;
> getObject(myId = 1, yourId = 2);
>
> then it creates SQL that looks like;
> select STUFF
> from myTable
> where 1=1
> and myid=1
> and yourid=1
> and...(add a number of arguments here....)
>
> If I do NOT pass in any arguments, then the SQL retrieves ALL rows
> from the table.
> But I want to do is;
> If no arguments are passed in - create an empty object.
>
> (we have a getAllObjects function to retrieve all rows)
>
> maybe some code will help...
>
> I have two snippets of code;
> One is a function in a CFC, the other is some code in a CFM template
> that calls the function - pretty simple.
>
> myTestCFC.cfc:
> <cffunction name="blah">
> <cfargument name="text" required="false" />
> <cfargument name="messageid" required="false" />
> <cfargument name="queryid" required="false" />
> <cfargument name="datasource" required="false" />
>
> <cfset var local = {} />
> <cfset local.length = #structCount(arguments)#>
>
> <cfreturn local.length>
> </cffunction>
>
>
> test.cfm:
> <cfset myReturnVal = myTestCFC.blah(text="gav", queryid=3)> <cfdump
> var="#myReturnVal#"> <br /> <cfif structKeyExists(messageCFC,
> "messageid")>
> Yes
> <cfelse>
> No
> </cfif>
>
> the output of this code is;
> 4
> No
>
> The value 4 is because blah() has 4 arguments defined.
> But structKeyExists, returns false...
>
> How can it not exist but be accounted for?
> surely one of the values is wrong?
>
> If I change the code slightly to be;
> <cfset local.length = #structKeyList(arguments)#> instead of; <cfset
> local.length = #structCount(arguments)#>
>
> Then all four arguments defined in the "stub" of the function are
> listed.
>
> So is one of the values being returned a bug?
>
> and lastly,
> How do I go about "counting" actual passed in aerguments?
> (I could write another function that loops through
> structKeyLists(arguments), then do a structKeyExists[i] and increment
> a counter and do my own accounting....
> but it just "seems" like there should be a nicer way to do it...
>
> As always - Thanks for any thoughts!
>
> Gavin.
>
--
You received this message because you are subscribed to the Google Groups
"cfaussie" group.
To post to this group, send email to <mailto:cfaussie@googlegroups.com>
cfaussie@googlegroups.com.
To unsubscribe from this group, send email to
<mailto:cfaussie+unsubscr...@googlegroups.com>
cfaussie+unsubscr...@googlegroups.com.
For more options, visit this group at
<http://groups.google.com/group/cfaussie?hl=en>
http://groups.google.com/group/cfaussie?hl=en.
--
You received this message because you are subscribed to the Google Groups
"cfaussie" group.
To post to this group, send email to cfaussie@googlegroups.com.
To unsubscribe from this group, send email to
cfaussie+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/cfaussie?hl=en.
--
You received this message because you are subscribed to the Google Groups
"cfaussie" group.
To post to this group, send email to cfaussie@googlegroups.com.
To unsubscribe from this group, send email to
cfaussie+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/cfaussie?hl=en.
--
You received this message because you are subscribed to the Google Groups
"cfaussie" group.
To post to this group, send email to cfaussie@googlegroups.com.
To unsubscribe from this group, send email to
cfaussie+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/cfaussie?hl=en.
