[Zope] Re: CMFBTreeFolder Behavior

[David Pratt]

Hi Max.  I am getting no errors.  I am asking the question because I 
have no experience with CMFBTreeFolder and the script works fine in a 
regular folder or a CMF Portal folder.

When images come into the uploads folder, I am resizing each into 3 
sizes using PIL and moving this data into an external file type to 
store file on the filesystem and discarding the original file.  I have 
this working except images are not processed immediately when they come 
into uploads folder - so I was looking to cronning to see if anything 
is in the uploads folder each 15 or 30 min.

Clients will upload images from a form, FTP, or WebDAV.  I did not want 
to give people server accounts to upload their data using scp but in 
the end I am going to have to get SFTPGateway product working so there 
is some security with this in any case.  I just received Paul's 
message. I think he may be right on what is happening when getting the 
items from the folder.  I think the workflow idea could be the solution 
to solve the immediate processing issue so will also look into this.

Regards,
David

On Monday, February 28, 2005, at 10:46 AM, Max M wrote:

> David Pratt wrote:
>> Hi.  I am working with the CMFBTreeFolder for the first time. I 
>> thought it would make sense since I am wanting to use this type for 
>> an uploads folder.  There may be thousands of objects.  Once files 
>> have been uploaded to the folder, I am running a script to pull out 
>> images using a for statement like this:
>>     # Iterate over folder contents
>>     for name, obj in start_dir.objectItems(['Portal Image']):
>>        and then executing some logic on the images afterwards.  I am 
>> planning to cron the script unless I can figure a way to execute the 
>> logic as files are coming into the folder (which would be the best - 
>> so any ideas here would be great).
>
>
> First of. Maybe your script runs into an error, and stops. It's hard 
> to tell without seing the script what the problem is. It's most likely 
> not a BTreeFolder issue.
>
> If you need to do processing on an image, you should subclass the CMF 
> Image class, and overwrite the methods necessary for postprocessing 
> your images. That is a better solution than a cron job.
>
>
> -- 
>
> hilsen/regards Max M, Denmark
>
> http://www.mxm.dk/
> IT's Mad Science
>
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