Hi Brian.
Well first of all if you are using SQL Server try this to get the new ID in the
same transaction rather than doing another query;
<cfquery datasource="[datasource]" username="[username]" password="[password]"
name="qry">
SET NOCOUNT ON
INSERT INTO orders
(
** Your order fields **
)
VALUES
(
** Your data **
)
SELECT @@Identity AS orderID
SET NOCOUNT OFF
</cfquery>
<cfset attributes.orderID=qry.orderID>
I am not sure what you use the unique number for other than for something to
put onto the receipts or something?
However, if you want to obscure the ID in a link you could encrypt it. I have
done this is the past where I sent users and email but didn’t want them to be
able to just increment the link to see someone else’s order, e.g.
displayorder.cfm?orderID=1234
So I did this:
<cfset myKey="[** your generated AES key **]">
<cfset AESorderID=urlencodedformat(encrypt(attributes.orderID,myKey,"AES"))>
Because the orderID is unique the encrypted value should be unique as well.
See
http://help.adobe.com/en_US/ColdFusion/9.0/CFMLRef/WSc3ff6d0ea77859461172e0811cbec22c24-7c2f.html
I am not sure if that is what you actually wanted but I hope it helps!
From: cfaussie@googlegroups.com [mailto:cfaussie@googlegroups.com] On Behalf Of
Brian Knott
Sent: Wednesday, 27 January 2016 9:31 AM
To: cfaussie@googlegroups.com
Subject: [cfaussie] SQL identity issue
Hi everyone.
I have an issue with inserting orders into a database. What I currently do is
create a random number and insert that number into the database when an order
is inserted. I then query the database to get the order number (unique ID
generated by SQL Server). Using this order number I then insert the items into
an item table.
The issue is that its possible for 2 orders to end up with the same unique
number, this is because the random function is not actually that random. If
two people are submitting orders at the same time, they get the same random
number. This means that all of the items ordered go to one customer, and the
other customer gets no items.
Current code for the random number is
<cfset session.order.uniquenumber = RandRange(1,99999999) + now()>
Is there a more reliable way of doing this?
Brian
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