CODEWITHSUNDEEP
djangodjango-rest-frameworkdjango-viewsdjango-file-upload
Micromegas
Micromegas

Reputation: 1689

How to correctly to download file with django requests

I am running a Django app where I can upload files. Now I want to download the files using requests. I was trying to create a view where the file is downloaded, so I can then make a call with requests. But it doesn't quite work

My model: 

class FileCollection(models.Model):
    name = models.CharField(max_length=120, null=True, blank=True)
    store_file = models.FileField(storage=PrivateMediaStorage(), null=True, blank=True)
    creation_date = models.DateTimeField(null=True, blank=True)

My views



def fileview(request, *args, **kwargs):
    file = FileCollection.objects.first()
    file_path = file.store_file
    print(file_path)
    FilePointer = open(file_path, "r")
    response = HttpResponse(FilePointer, content_type='application/msexcel')
    response['Content-Disposition'] = 'attachment; filename=NameOfFile'

    return response

It tells me that TypeError: expected str, bytes or os.PathLike object, not FieldFile

If I pass in the url provided in the apiview/admin I get: FileNotFoundError: [Errno 2] No such file or directory

Also tried: 

def fileview(request):
    path = FileCollection.objects.first()
    obj = path.store_file
    o = str(obj)
    file_path = os.path.join(settings.MEDIA_ROOT, o)
    print(file_path)
    if os.path.exists(file_path):
        with open(file_path, 'rb') as fh:
            response = HttpResponse(fh.read(),
                                    content_type="application/vnd.ms-excel")
            response[
                'Content-Disposition'] = 'inline; filename=' + os.path.basename(
                file_path)
            return response

but this gives me ValueError: The view file_storage_api.api.v1.views.fileview didn't return an HttpResponse object. It returned None instead.

Is that the right way to go?

I'm very grateful for help or hints. Thanks so much

Upvotes: 0

Views: 733

Answers (1)

tstoev
tstoev

Reputation: 1435

file_path = file.store_file

is not a file path but an instance of a FileField try using 

file_path = file.store_file.name

and use the second snippet

EDIT: here is the code I use: l_targetFile is the path to the actual file

    l_prjPath = os.path.realpath(os.path.dirname(__file__)).replace(<adapt the path here>)
    l_userFileName= <file field>.name.replace('<upload to sub-dir>','')
    l_targetFile = l_prjPath + '/media/' + l_fileObj.file_obj.name
    #return the file
    response = FileResponse(open(l_targetFile, 'rb'),\
                            (l_responseDisposition == 'attachment'))        

    #process the filename as stored on the local machine in case of download
    try:
        #check if it will throw
        l_tmpUserName = l_userFileName.encode('ascii')

        #no error use the non-encoded filename
        l_fileExpr = 'filename="{0}"'.format(l_userFileName)
    except UnicodeEncodeError:
        # Handle a non-ASCII filename
        l_fileExpr = "filename*=utf-8''{}".format(quote(l_userFileName))

    response['Content-Disposition'] = '{0};{1};'.format(l_responseDisposition,l_fileExpr)
    if '.pdf' in l_userFileName:
        response['Content-Type'] = 'application/pdf'
    elif l_dataSource == CMSArchiveEntry.SOURCE_TAG:
        response['Content-Type'] = 'text/html; charset=utf-8'
    return response

Upvotes: 1

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