Cffunction valitation error

Question

Hi,
I have a form where I  fill a customer-no. into an input field and get the customer name using databinding.
This works fine, but when I put non-numeric values into customer-no I get following error:
Error invoking CFC customer.cfc : The CUST_ID argument passed to the getcustomer function is not of type numeric. [Enable debugging by adding 'cfdebug' to your URL parameters to see more information]
The message is correct, but how can I avoid to run the getcustomer function when the value is not numeric?
Here is my code:
The form:
<cfinput type="text" name="customer_no" style="width:140;background-color:yellow" maxlength="10"  validate="integer" validateat="onblur"   message="Customer No. format is integer">
<cfinput type="text" name="customer_name" style="width:170" maxlength="200" bind="cfc:customer.getcustomer({customer_no})" readonly="yes">
customer.cfc:
<cfcomponent >
<cffunction name="getcustomer" access="remote" returntype="string" output="yes"  >
    <cfargument name="cust_id"   type="numeric"  required="true" >
                 <cfset  r_customer = "">
         <cfquery name = "select_customer" dataSource = "x">
        SELECT name
        FROM customer
        WHERE id =  <cfqueryparam   cfsqltype="cf_sql_numeric" value="#arguments.cust_id#" >
        </cfquery>
<cfreturn r_customer>
</cffunction>
</cfcomponent>

Answer 1

biene22 wrote:
The message is correct, but how can I avoid to run the getcustomer function when the value is not numeric?
That is a trick question! The attribute bind="cfc:customer.getcustomer({customer_no})" implies that the function will run automatically, whether or not customer_no is numeric.