Where we store pickles in the database, we use a TextField, then
compress and base64-encode the data:
class BlobbyRecord(models.Model):
blob = modelsTextField()
...
bin = pickle.dumps(my_data, 0)
blobby = BlobbyRecord(blob=zlib.compress(bin).encode('base64'))
blobby.save()
Reading is just the opposite:
blobby = BlobbyRecord.objects.get(blah blah)
bin = zlib.decompress(blobby.blob.decode('base64'))
my_data = pickle.loads(bin)
If you have binary data other than pickles to store, just leave out the
first line in the first snippet, and the last in the last.
--Ned.
http://nedbatchelder.com/blog
shabda wrote:
> Yes I was looking for snippets and recipes, not storing them in DB.
> There are some instances when storing things in DB is just too
> convinient comaring to storing them on files. For example I get some
> JSON from a external web service call. I want to cache it in the
> system, so I want to just pickle it and dump it i the db. Blob would
> be very nice here.
>
> On Mar 28, 10:48 am, "Rishabh Manocha" <[EMAIL PROTECTED]> wrote:
>
>> I think he meant recipes in that are there any recipes to accomplish
>> this (storing binary data to the DB). Unless I'm getting this
>> completely wrong, he was not talking about cooking recipes :).
>>
>> I would be interested in a solution for this too. There are cases
>> where apps running as the apache/web user do not have write
>> permissions to the local FS (an example would be the sourceforge
>> servers). In these situations, having your db store this information
>> is the only way to go.
>>
>> Best,
>>
>> R
>>
>> On Fri, Mar 28, 2008 at 7:45 AM, Dan Ellis <[EMAIL PROTECTED]> wrote:
>>
>>
>>> On Mar 27, 9:05 pm, Mike H <[EMAIL PROTECTED]> wrote:
>>>
>>> > Reading large
>>> > chunks of file data from a db just wastes db resources
>>>
>>> A recipe is unlikely to be a large chunk of file data. Pictures of
>>> food, sure, don't store those in the DB. Storing the text in the DB
>>> also means you can make use of its full text searching capability.
>>>
> >
>
>
--
Ned Batchelder, http://nedbatchelder.com
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