Success! Here is how you can validate all files in a multiple file upload.
In this example if one document does not validate then the entire
validation fails. You could easily just drop the files that don't validate
and only let the accepted files through for processing.
*If anyone has a more elegant solution please let me know.*
def submit():
form = FORM(LABEL(""), INPUT(_name='up_files', _type='file',
_multiple=True, requires=IS_NOT_EMPTY()),INPUT(_type='submit')) # The
multiple param lets us choose multiple files.
if form.accepts(request.vars, formname="file_upload",
onvalidation=upload_validation): #onvalidation checks the uploaded files to
make sure they are only txt, config, or log.
response.flash = 'Bro...uploading files'
files = request.vars['up_files']
if not isinstance(files, list): #convert files to a list if they
are not one already.
files = [files]
for file in files:
up_file = db.uploads.up_file.store(file, file.filename) #store
is a FIELD method that let's you save a file to disk. you can choose the
directory if you want using the 'path' param.
else:
response.flash = 'Choose the Files you would like to upload'
return dict(form=form)
def upload_validation(form):
files = request.vars['up_files']
if not isinstance(files, list):
files = [files]
for file in files:
file_extension = file.filename.split('.')[-1] #find the file
extension
acceptable_file = file_extension in ('txt', 'config', 'log')
#choose the allowed file extensions
if not acceptable_file:
form.errors.up_files = "Only .txt, .config, or .log files are
allowed." #if they files are not acceptable return False. Validation
fails....else process the files.
return False
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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