[Zope3-dev] Important IFile bug!

[Roger Ineichen]

> Behalf Of Jim Fulton
> Sent: Friday, January 14, 2005 5:30 PM
> To: dev at projekt01.ch
> Cc: zope3-dev at zope.org
> Subject: Re: [Zope3-dev] Important IFile bug!
> 
> Roger Ineichen wrote:
> 
> ...
> 
> > Ok, what can I do?
> > 
> > Should I implement a IData field and enhance this field?
> 
> I think you should define an IMime schema that defines methods
> to get and set the data. I suggest that this should be a
> file-like interface, with, at least, read and write.
> It should have a mime-type attribute and an encoding
> attribute, for use with text.
> 
> Then you should define a mine field (IMImeField/MimeField)
> for data with this interface.
> 
> Finally, you need a widget.
> 
> The widget should support:
> 
> - file-upload
> 
> - text area if content type is text/* *and* if an encoding
>    is specified.
> 
> - entry of content type and, for text types, the encoding
> 
> > The validate method of this field should allowes to store 
> > String and FileChunk? Others?
> 
> The validate method should accept strings and objects
> with read methods.
> 
> > Is there a python lib for reading files and find the 
> > content type like stefan was implementing for images?
> 
> Of course, in the unlikely event that the client sends the
> file type and/or encoding with the file upload, you should
> use that information.  Otherwise, use zope.app.content_types,
> which seems to use the Python mimetypes module.
> 
> If you feel especially inspired, it would be nice to store
> file-upload data in a session if someone submits a form
> with a file-upload using other than the main submit
> button or if there are validation errors on other fields.
> IOW, it would be cool if the widget stored the data in a
> session so that the data wasn't lost on a redisplay.
> 
> Jim

Ok, I will try to add the relevant part.

I let you know if I have questions

BTW;
I allready implemented a i18n pattern in our tiks framework
perhaps it is the right time to move this back to zope3.

If I have working version, I let you know, perhaps it's 
interessting to take a look at our 18n concept and use it
instead the zope3 part.

All our file and i18n implementations work with the form 
framework out of the box.  


Regards
Roger Ineichen