[Grok-dev] Re: save file to filesystem
Dirceu Pereira Tiegs
dirceutiegs at gmail.com
Thu Feb 28 17:04:05 EST 2008
Sorry about the delay. :-(
On Thu, Feb 28, 2008 at 9:43 AM, Martijn Faassen <faassen at startifact.com> wrote:
> I don't think we can reuse the IBlobFile interface here. We are
> talking about the interface marking
> the *field*, and we can't reuse the interface marking the file for this.
> I'm also not sure whether we should be subclassing schema.File for
> this, though not sure we shouldn't
> either. What does namedfile do? We should follow its pattern.
collective.namedfile uses this:
from zope.schema import Field
from interfaces import INamedFile
"""A NamedFile field
> > i took a look in collective.namedfile and saw how NamedFile is set up in
> > file.py. copying that to blobfile.py and renaming a few things leaves me
> > with this:
> > from zope.interface import implements
> > from z3c.blobfile import File
> > from interfaces import INamedFile
> > class BlobNamedFile(File):
> > implements(INamedFile)
> > def __init__(self, data='', contentType='', filename=None):
> > File.__init__(self, data, contentType)
> > self.filename=filename
> Yes, that looks right to me.
> It's basically a subclass of the widget in namedfile, that overrides
> the one method that
> instantiates the NamedFile object and instead you instantiate your new
> BlobNamedFile object.
> You also need to hook the widget up to the field, along the lines of
> what happens in BlobNamedFile.
> Thinking about it, it might make the most sense to get the namedfile
> package adjusted for blob support
> first. You need to discuss that with the creators - there might be
> dependency issues where the ZODB that
> namedfile is usually used with is not modern enough to support blobs.
> If you need help discussing things with the
> people who maintain that package please let me know (just cc me in on
> any email discussion).
Actually including z3c.blobfile as a dependency of
collective.namedfile will cause the installation of ZODB 3.8.
collective.namedfile is primarly used by Plone 3, so I don't know if
it's a good idea.
> After it's integrated, we can do a very easy inclusion in megrok.form.
> I hope Dirceu also joins in the thread and helps you!
I'm here :-)! Sorry again about the delay.
Dirceu Pereira Tiegs
Hospedagem Plone, Zope e Python
More information about the Grok-dev