[entity,views/json] backout 353bbd17a8b6 (reopens #2559931)
Calling .complete() unconditionnally from the json encoder is unsafe
since on entity creation validation:
* an eid may have been drawn (hence even .has_eid() would not help)
while processing form data in the edit controller
* a ValidationError may have been raised and the entity-creating
transaction rollbacked
This leads to a crash on the return path from the validation to the
browser, where the json_dumps((status, args, entity)) call will
stumble upon the .complete() call which will fail because the entity
does not (any more) exist in the database.
from base64 import b64decode, b64encode
try:
uri, newdn = __args__
except ValueError:
print 'USAGE: cubicweb-ctl shell <instance> ldap_change_base_dn.py -- <ldap source uri> <new dn>'
print
print 'you should not have updated your sources file yet'
olddn = repo.config.sources()[uri]['user-base-dn']
assert olddn != newdn
raw_input("Ensure you've stopped the instance, type enter when done.")
for eid, extid in sql("SELECT eid, extid FROM entities WHERE source='%s'" % uri):
olduserdn = b64decode(extid)
newuserdn = olduserdn.replace(olddn, newdn)
if newuserdn != olduserdn:
print olduserdn, '->', newuserdn
sql("UPDATE entities SET extid='%s' WHERE eid=%s" % (b64encode(newuserdn), eid))
commit()
print 'you can now update the sources file to the new dn and restart the instance'