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Hi - we have a crashed Openerp 7 db adn where trying to extract a pdf file from ir_attachment.dbdatas
I have tried directly via SQL but although I can retrieve something it appears to be "Gobbledygook!!
Is there a way of extracting files from the db?
copy
(SELECT
db_datas
FROM
ir_attachment
WHERE
name='Invoice_SAJ_2016_0964_.pdf')
to '/tmp/Invoice.pdf' (FORMAT "binary");Any advice please.
If I open each file in a text editor each file starts with "PGCOPY" - a clue maybe?
This is my reHASH of Sir 'Jaime Vasquez' above code, I tried converting his comment to an answer but kept failing.
Jaime, please forgive my poor rehash of your coding, I'm still in the "Jowels flapping in the wind, vertical acceleration learning phase" :)
import psycopg2
import base64
def main():
#Dataase details
host='192.168.0.100'
port= '5432'
dbname='CrashedDbName'
user='openerp'
password='LittlePigLetMeIn'
#Database connection
try:
conn = psycopg2.connect ("host='"+host+"' port= '"+port+"' dbname= '"+dbname+"' user= '"+user+"' password= '"+password+"'")
cur = conn.cursor()
print "Connected"
except:
print "Unable to connect to database."
return
try:
#Invoice range to extract
for Invoice in range (768,967):
SearchString = "SELECT a.name, description, a.create_date, a.datas_fname, a.id, a.db_datas FROM ir_attachment a WHERE a.datas_fname = '"+"INVSAJ20160"+str(Invoice)+".pdf.pdf"+"';"
cur.execute(SearchString)
rows = cur.fetchall()
#Save Invocies to file
for row in rows:
if row[5]:
#valid pdf
#Save path
f= open('C:\Users\Me\Documents\Invoices\INVSAJ20160'+str(Invoice)+'.pdf', 'wb')
#We have to decode first
f.write(base64.b64decode(row[5]))
f.close()
except:
print ValueError
return
if __name__ == '__main__':
main()
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Hi Cameron,
Querying the database will not work because the pdf file is encoded by openerp. You have to use some python code to extract the pdf file:
Please fix the python code accordingly. I dunno how to paste and format a code block in this forum. :)
Formated Code: http://paste.ofcode.org/hecdAnzV2xKXnL238r8Scm
import psycopg2
import base64
def main():
# Try to connect
try:
conn=psycopg2.connect("dbname='yourdatabase' user='openerp' password='openerp'")
except:
print "unable to connect to database."
cur = conn.cursor()
try:
cur.execute("""select
a.name
, a.create_date
, regexp_replace(a.description , E'[\\n\\r]+', ' ', 'g' ) description
, a.datas_fname
, a.id
, a.db_datas --binary attachment encoded
from ir_attachment a
where a.datas_fname is not null
order by id
limit 10;
""")
except:
print "Error querying Postgresql"
rows = cur.fetchall()
try:
for row in rows:
print row[0] # name
print row[1] # description
print row[2] # datas_fname
print row[3]
#save pdf to disk
#invalid pdf. It's encoded in base64 by openerp
f = open('c:/Temp/file.pdf', 'wb')
f.write(row[5])
f.close()
#valid pdf.
f= open('c:/Temp/file_decode.pdf', 'wb')
#we have to decode first
f.write(base64.b64decode(row[5]))
f.close()
except ValueError:
print ValueError
if __name__ == '__main__':
main()
Greetings.
Jamie - :) I cannot thank you enough. Worked a treat. Thank you, thank you, thank you :)