Title: Re: [CFCDev] MVC File upload
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If on cfmx7, use the result attribute to make cffile
action="" thread-safe, if on cfmx 6 you have to instanziate tje cfc
containing cfupload in var scope.
regards
salvatore
----- Original Message -----
Sent: Thursday, May 11, 2006 5:42
PM
Subject: Re: [CFCDev] MVC File
upload
One thing to keep in mind as well is that the CFFILE
tag is not thread-safe. This means that data from one CFFILE operation (say,
the result data structure from a CFFILE operation) may inadvertently get
carried over to another CFFILE operation between user requests if the object
that contains the CFFILE code is cached at startup by your MG application. As
such, you dont want to instantiate your file upload code in an object that is
cached when your MG application starts up. You should instead instantiate a
separate object containing the actual CFFILE calls each and every time you
need to make a call to CFFILE.
(Another) brian
on 5/11/06 11:03
AM, Brian Kotek at [EMAIL PROTECTED] wrote:
No. I understand how confusing some of these things
can be, but in this case I think some additional learning and research is in
order. A Data Access Object (DAO) is a very specific kind of object that is
part of a design pattern also called "Data Access Object". A DAO is
specifically for abstracting database interactions. Handling a file upload
is not part of the responsibility of a DAO. For more detail on the DAO
pattern, you can Google around, but here is a starting point: http://java.sun.com/blueprints/corej2eepatterns/Patterns/DataAccessObject.html
I
would probably create a FileManager or even a FileUploadManager if the need
is very specific, and have this object encapsulate all behavior related to
handling a file upload.
Hope that helps! This stuff takes a good
long time to wrap your head around (at least it took/is still taking me a
long time).
Brian
On 5/11/06, David Henry
<[EMAIL PROTECTED]> wrote:
I am very new to the MVC process for web
development. How would I set up a file upload that follows the MVC
model? Should I create a Data Access Object that does cffile
operations? Thanks for your help!
~David
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