Thanks, it finally worked. Following your suggestion, what I did is:
1. in class body, define:
content = db.BlobProperty(required=False)# notice required
is set to False
2. in __init__(arg1, arg2, ...):
self.content = ''
Then
self.content += src
doesn't complain
Hi TLH,
I'm writing a FileUploadHandler that saves files into a Blob, hence I'm
using BlobProperty.
Will
On Tue, Jan 27, 2009 at 8:56 PM, TLH tlhola...@gmail.com wrote:
from google.appengine.ext import db
class Foo(db.Model):
b = db.BlobProperty()
def butWhy(self, s):
self.b =
On Feb 2, 6:02 pm, Will vocalster@gmail.com wrote:
Thanks, it finally worked. Following your suggestion, what I did is:
1. in class body, define:
content = db.BlobProperty(required=False) # notice required
is set to False
2. in __init__(arg1, arg2, ...):
Here you go,
--
class UploadStorage(db.Model):
def __init__(self, field_name, file_name, content_type, content_length,
charset):
self.content = db.BlobProperty(required=True)
self.last_change = db.DateTimeProperty(required=True, auto_now=True)
Rewrite your UploadStorage class to declare the module properties in
the class body, not in the __init__ method. App Engine forwards access
to property definitions to the actual property values, creation of the
properties in __init__ is probably not compatible with it.
For example, when you
When creating an UploadStorage entity, you should initialise the
content property:
my_entity = UploadStorage(content='')
or:
my_entity = UploadStorage()
my_entity.content = '' # or whatever your initial value is
I know, it a bit confusing. When you define the property in the class,
from google.appengine.ext import db
class Foo(db.Model):
b = db.BlobProperty()
def butWhy(self, s):
self.b = self.b + s
f = Foo(
b = Append to a Blob?
)
f.butWhy( You can, but why?)
print f.b # Append to a Blob? You can, but why?
I suspect you should be using a Text property.
No, doesn't work. I got
unsupported operand type(s) for +=: 'BlobProperty' and 'str'
Same as before.
Could you post here all related code, including the construction of a
Storage entity?
--~--~-~--~~~---~--~~
You received this message because you are
db.Blob is a subclass of str. Try this code:
class Storage(db.Model):
blob = db.BlobProperty()
def append(self, value):
self.blob += value
s = Storage()
s.blob = 'abc'
s.append('def')
s.put()
On Jan 24, 3:20 am, Will vocalster@gmail.com wrote:
Hi all,
I'd like to
