Django snippets

import os, tempfile, zipfile
from django.http import HttpResponse
from django.core.servers.basehttp import FileWrapper


def send_file(request):
    """                                                                         
    Send a file through Django without loading the whole file into              
    memory at once. The FileWrapper will turn the file object into an           
    iterator for chunks of 8KB.                                                 
    """
    filename = __file__ # Select your file here.                                
    wrapper = FileWrapper(file(filename))
    response = HttpResponse(wrapper, content_type='text/plain')
    response['Content-Length'] = os.path.getsize(filename)
    return response


def send_zipfile(request):
    """                                                                         
    Create a ZIP file on disk and transmit it in chunks of 8KB,                 
    without loading the whole file into memory. A similar approach can          
    be used for large dynamic PDF files.                                        
    """
    temp = tempfile.TemporaryFile()
    archive = zipfile.ZipFile(temp, 'w', zipfile.ZIP_DEFLATED)
    for index in range(10):
        filename = __file__ # Select your files here.                           
        archive.write(filename, 'file%d.txt' % index)
    archive.close()
    wrapper = FileWrapper(temp)
    response = HttpResponse(wrapper, content_type='application/zip')
    response['Content-Disposition'] = 'attachment; filename=test.zip'
    response['Content-Length'] = temp.tell()
    temp.seek(0)
    return response