Kill Missing form variable in Session , and redifne it .

Question

The Form variable in my form is being passed /retrieved via Session.

I have a troublesome Form variable(formField1) that was NOT DEFINED properly in the Session. But the whole form was put into use.Then this particular Form variable(formField1) was filled , and used .Hence this undefined Form variable, got trapped in the Session, as all the form variable is being passed /retrieved via Session for my from. This was throwing an error. I gave a stop gap solution:-

 <cfif isDefined("TTsession.filing.formField1")>
       <cfset TTD formField1 = TTsession.filing.formField1>
     <cfelse>
       <cfset TTD formField1 = "0">
     </cfif>

TTsession= name of the Session variable formField1=name of the erroneous form field.

As a result of which all the forms in which “TTsession.filing.formField1” was improperly defined are giving an output of “0”.

I do not want this. What I want to do is:

1. Check Does form variable EXIST in session?

2. If yes < cfset FormVar1=session. FormVar1>

3. If NO a. KILL THE MISSING form variable in that Session. b. re-Define the form variable FormVar1 right here in that Session. < cfset FormVar1=session. FormVar1>

Kindly help me I am using CFMX6.1.

-Rames

Answer 1

<cfparam name="FormVar1" default="0">

<!--- set overide defaults if in the session --->
<cfif StructKeyExists( TTsession.filing, "formField1")>
   <cfset FormVar1 = TTsession.filing.formField1>
</cfif>

I think the problem might be where you have created this session, however if you merely want to set defaults just use cfparam :

 <cfparam name="session.filling.formfield1" type="numeric" default="0">

So if the session var is defined, do nothing. Else define it with the value of zero. All in one line.