GridFS in Ming

[Panjie Setiawan Wicaksono]

Hi all,

is there anywhere i can read about using GridFS with Ming in TG2 ?

Ming supports GridFS start from 0.3 version, and i've used this in several apps so far, but can't find any documentation of how to use GridFS with Ming,

Any help would be appreciated, thanks :)

[Panjie Setiawan Wicaksono]

anyone?

this is what i did so far, in my model module store.py :

from ming import schema as s, Field

from ming.odm import FieldProperty, ForeignIdProperty, RelationProperty

from ming.odm import Mapper

from ming.odm.declarative import MappedClass

from ming import fs

from tgming import SynonymProperty, ProgrammaticRelationProperty

import os

from session import DBSession

BookFile = fs.filesystem('books',DBSession.impl,)

class Book(MappedClass):

"""

Book definition.

"""

class __mongometa__:

session = DBSession

name = 'books'

unique_indexes = [('title',),('author',),]

_id = FieldProperty(s.ObjectId)

title = FieldProperty(s.String)

author = FieldProperty(s.String)

isbn = FieldProperty(s.String)

vendor = FieldProperty(s.String)

_file = FieldProperty(s.ObjectId)

def _get_file(self):

return BookFile.m.find(dict(_id=self._file)).one()

def _set_file(self, name, data):

f = BookFile.m.put(name,data)

self._file = f

bookf = SynonymProperty(_get_file, _set_file)

As you can see, the fs.filesystem can't take an ODMSession (ThreadLocalODMSession in this case),

so i have to drop down to basic ming Session class by doing DBSession.impl,

what i'm worried is, Turbogears has been using ThreadLocalODMSession to adapt to multi-threaded environment,

but what i'm doing above is giving the GridFS Connection the non thread-safe Session,

is that okay?

how should i do this correctly/safely ?

Anyhelp would be appreciated,

Thanks :)