async def unlink(file_id: objectid.ObjectId):
"""Unlink a file."""
coll = db.Collection('fs.files')
doc = await coll.find_one_and_update(filter={'_id': file_id},
update={'$inc': {'metadata.link': -1}},
return_document=ReturnDocument.AFTER)
if doc and not doc['metadata']['link']:
fs = db.GridFS('fs')
await fs.delete(file_id)
async def unlink(file_id: objectid.ObjectId):
"""Unlink a file."""
coll = db.Collection('fs.files')
doc = await coll.find_and_modify(query={'_id': file_id},
update={'$inc': {
'metadata.link': -1
}},
new=True)
if not doc['metadata']['link']:
fs = db.GridFS('fs')
await fs.delete(file_id)
async def add():
"""Add a file. Returns MotorGridIn."""
fs = db.GridFS('fs')
return await fs.new_file(metadata={'link': 1})
async def get(file_id):
"""Get a file. Returns MotorGridOut."""
fs = db.GridFS('fs')
return await fs.get(file_id)
async def add(content_type):
"""Add a file. Returns MotorGridIn."""
fs = db.GridFS('fs')
secret = pwhash.gen_secret()
return await fs.new_file(content_type=content_type,
metadata={'link': 1, 'secret': secret})