Thanks for your swift response.
I kind of understand that, but how do you get the value rather than the
field name?
db.define_table('file',
Field('client', 'reference client'),
Field('type', requires=IS_IN_SET(['Clipper','Workbench', 'Terramatch',
'Supply']), default='Workbench'),
Field('file', type='upload',
custom_store=lambda file,filename,path: store_file(file, filename, path, db
.file.client._id),
custom_retrieve=lambda filename, path: retrieve_file(filename, path, db.
file.client)),
format='%(file)s')
I'm trying to retrieve the clients name and use it to generate the folder.
Cheers,
-James
On Tuesday, April 9, 2013 2:06:54 PM UTC+12, Anthony wrote:
>
> The fourth argument passed to store_file() is db.table.new_filename, which
> is a DAL Field object. Your code is treating it as a string, and
> "table.new_filename" is the string representation of a Field object. If you
> want to include an actual filename string, then that's what you have to
> pass to the function.
>
> Anthony
>
> On Monday, April 8, 2013 9:34:45 PM UTC-4, James Burke wrote:
>>
>> Hi Anthony,
>>
>> I've tried the solution you've posted below:
>> Field('file', 'upload',
>> custom_store=lambda file, filename, path: store_file(file, filename,path
>> , db.table.new_filename),
>> ...)
>>
>> But when my additional parameter gets sent to store_file it sends
>> 'table.new_filename'
>>
>> def store_file(file, filename=None, path=None, new_filename=None):
>> path = "applications/init/uploads/%s" % (new_filename)
>> if not os.path.exists(path):
>> os.makedirs(path)
>> pathfilename = os.path.join(path, filename)
>> dest_file = open(pathfilename, 'wb')
>> try:
>> shutil.copyfileobj(file, dest_file)
>> finally:
>> dest_file.close()
>>
>>
>> return filename
>>
>> Results in a new folder in uploads called 'table.new_filename'
>>
>> Cheers
>> -James
>>
>> On Wednesday, August 8, 2012 11:51:44 PM UTC+12, Anthony wrote:
>>>
>>> On Wednesday, August 8, 2012 7:09:37 AM UTC-4, Jim Gregory wrote:
>>>>
>>>> Can custom_store and custom_retrieve take parameters when they are
>>>> called using Field, e.g.:
>>>> db.define_table('table',
>>>> Field('file', 'upload', custom_store=store_file(file,
>>>> db.table.new_filename),
>>>> custom_retrieve=retrieve_file(db.table.new_filename))?
>>>> Field('new_filename','string')
>>>> )
>>>>
>>>
>>> These attributes have to be callables, so you can't call them yourself.
>>> To pass additional custom arguments to a callable, just turn it into a
>>> lambda that takes the standard arguments and pass the additional arguments
>>> to your function within the lambda:
>>>
>>> Field('file', 'upload',
>>> custom_store=lambda file, filename, path: store_file(file, filename,path
>>> , db.table.new_filename),
>>> ...)
>>>
>>> When web2py calls the custom_store callable, it will pass three
>>> arguments (file, filename, and path), so your lambda must take three
>>> arguments. Within the lambda, you can then do whatever you want. You can
>>> pass any or all of the standard three arguments to your custom function,
>>> and you can pass additional arguments. In the example above, I passed the
>>> three standard arguments followed by a fourth custom argument, though it
>>> doesn't have to look like that (presumably you will at least want to pass
>>> the file as an argument).
>>>
>>> custom_retrieve takes two standard arguments, "name" and "path".
>>>
>>> Anthony
>>>
>>>
--
---
You received this message because you are subscribed to the Google Groups
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
