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David,
either DAO or fileUloadManager are abstraction layers: the
former against a persisting layer such as a database,an ldap server ecc, the
latter against a persisting layer that is the file system.
All are services
regards
salvatore
----- Original Message -----
Sent: Thursday, May 11, 2006 5:35
PM
Subject: Re: [CFCDev] MVC File
upload
Ok, so no DAO for file upload.
Creating a FileManager or
a FileUploadManager: where does that fit on my dry-erase board?
Model? Controller? Both? I think I should have a cfm to make the form,
something control level to handle writing the file to disk and store to the DB
the file name and other info and then view again to handle displaying the file
and surrounding info back to the user. Where does the Model come
in? Does it?
Thanks again
~David
On Thu, 2006-05-11 at
11:03 -0400, Brian Kotek 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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