Well, I would store the pshysical file in a system folder. After this I would save the path to the file in a table. Then you could manage your files via sqlalchemy, listing all files and working with them properly.
2013/2/26 dalia <dalia....@gmail.com> > Hi Mauricio, > > Thanks for the reply. But importing BLOB specifically did not solve the > problem. It is the same. In the INSERT statement, it looks like it is > storing the file in Binary, but then when I query the database, it just > shows (BLOB) and not the data. > > My requirement is to store .xls, .pdf and .doc files which contain images > inside. The maximum file size can go up to 500KB. The file I'm testing with > is a .xls file (size 5.5KB). > > That's why I chose to store them in a BLOB type. What do you suggest? > > > On Tuesday, February 26, 2013 2:55:36 PM UTC, Mauricio de Abreu Antunes > wrote: > >> Well, >> >> I think you need to import BLOB from dialects like: >> >> from sqlalchemy.dialects.oracle import BLOB >> >> in your Model you can describe the field type following it: >> >> MyBLOBColumn = Column(BLOB) >> >> Actually, IMHO i don't think saving large contents (binary from binary >> files) as pure text in the database is the best option. >> >> 2013/2/26 dalia <dali...@gmail.com> >> >>> Hi, >>> >>> My intention is - to store .xls, .doc and .pdf files (with images in >>> them) to store in a Oracle database and retrieve them. I'm using SQLAlchemy >>> declarative code. The problem is, the data gets stored in the database but >>> when I try to fetch the data back, it comes out as 0KB. I'm explaining the >>> code and actions below - >>> >>> The model - >>> >>> class ReportFiles(Base): >>> __tablename__ = 'report_files' >>> id = Column(Integer, primary_key=True) >>> report_file = Column(BLOB) >>> file_name = Column(Unicode(50)) >>> >>> >>> Storing in database - >>> >>> content = cStringIO.StringIO() >>> def store_in_db(): >>> session = meta.Session() >>> self._get_file(content) ### This is a function which generates >>> the file (.xls / .doc / .pdf) in the content >>> contentstr = content.getvalue() >>> tbl = model.ReportFiles() >>> tbl.file_name = "test file" >>> tbl.report_file = contentstr >>> session.add(tbl) >>> session.commit() >>> >>> After the store, if I query the database, I get this result - not sure >>> if it has stored alright - >>> >>> select file_name, length(report_file) from report_files; >>> >>> Name | Length >>> -------------------------- >>> test file | 5632 >>> >>> select file_name, report_file from report_files; >>> >>> Name | file >>> ------------------ >>> test file | (BLOB) >>> >>> This doesn't look right because instead of the file, it just shows (BLOB) >>> >>> Retrieving from database - now I want the file to be downloaded as an >>> excel (.xls) file >>> >>> def _get_report(self): >>> tbl = model.ReportFiles >>> file = meta.Session.query(tbl).get(**id=1) >>> contentstr = file.report_file >>> response.content_type = 'application/vnd.ms-excel; charset=utf-8' >>> response.headers['Content-**disposition'] = 'attachment; filename = >>> %s' %file.file_name >>> response.content_length = len(contentstr) >>> print "Length = %s" %len(contentstr) >>> return contentstr >>> >>> >>> This downloads the .xls file fine. The print statement prints the file >>> size as 5632. The download dialogue says the file size is 5.5KB. But when I >>> open the file, it says 'file type not in right format'. When I open it in >>> notepad, it is a 0 KB file. When I list the file in the directory, it is a >>> 0KB file. >>> >>> Can somebody please tell me what is wrong here? Looks like the file >>> doesn't get stored properly? Or am I missing something obvious? Or do I >>> need to handle BLOB types differently? >>> >>> Many Thanks. >>> >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "sqlalchemy" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to sqlalchemy+...@**googlegroups.com. >>> To post to this group, send email to sqlal...@googlegroups.com. >>> >>> Visit this group at >>> http://groups.google.com/**group/sqlalchemy?hl=en<http://groups.google.com/group/sqlalchemy?hl=en> >>> . >>> For more options, visit >>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>> . >>> >>> >>> >> >> >> >> -- >> *Mauricio de Abreu Antunes* >> Mobile: (51)930-74-525 >> Skype: mauricio.abreua >> > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at http://groups.google.com/group/sqlalchemy?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- *Mauricio de Abreu Antunes* Mobile: (51)930-74-525 Skype: mauricio.abreua -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. 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