Hi,
I would recommend that you checkout how django uses storage backends. The
reason for that is that if you would like to use your application with a
cloud provider that has a storage solution - for example S3, your code
won't work the way it is written now.
However if you just make some minor changes - it will work directly without
any major problems.
Just do this:
view.py
from django.core.files.storage import default_storage
def download(request):
data = default_storage.open('static/tmp/dati.csv').read()
resp = HttpResponse(data, mimetype='application/x-download')
resp['Content-Disposition'] = 'attachment; filename=dati.csv'
return resp
Like I said, the reason for this is that you in the case don't have to
handle the MEDIA_ROOT settings yourself and it all works the same anyway.
Should you decide to move to a cloud provider that has some sort of storage
- you can then use the django-storages package and easily connect it,
without changing your code.
Regards,
Andréas
2017-09-07 10:33 GMT+02:00 giuseppe ricci <peppepega...@gmail.com>:
> Thanks.
> My solution:
>
> urls.py
> url(r'^download/$', 'views.download', name='download'),
>
> template.html
> <p><a href="/download/">Download dei dati</a><p><p><a
> href="home">Indietro</a></p>
>
> views.py
> def download(request):
> data = open(os.path.join(settings.MEDIA_ROOT, 'static/tmp/dati.csv'),
> 'r').read()
> resp = HttpResponse(data, mimetype='application/x-download')
> resp['Content-Disposition'] = 'attachment; filename=dati.csv'
> return resp
> it works!
>
>
> Il giorno giovedì 31 agosto 2017 17:58:27 UTC+2, giuseppe ricci ha scritto:
>
>> Hi guys, I need some help to insert a link to download a file. In a view
>> I read data from a csv file and I show them in a table in a template. Under
>> the table I need to insert, when there are data,
>> a link similar as Download data and when user click it, he download the
>> datafile, previously I wrote the same data in a csv file. You can see a
>> part of interested view and the template to show data.
>> In the code doesn't download anything.
>>
>> views.py
>>
>> listafile = os.listdir('static/dati')
>>
>> fileok=[]
>> context={}
>> i=0
>> for file in listafile:
>> inizio=str(file[0:4]).strip()
>> if inizio==anno:
>> fileok.append(file)
>> elif inizio=='coun':
>> contaf=str(file[6:10]).strip()
>> if contaf==anno:
>> fileok.append(file)
>> else:
>> pass #print "File NON trovato", inizio, anno
>>
>> for nomefile in fileok:
>> nomedato=str(nomefile[5:-4]).strip()
>> if nomedato==tipodati:
>> path2file=str(("static/dati/"+str(nomefile)).strip())
>> with open(path2file) as f:
>> for line in f:
>> riga = line.split(";")
>> if riga[0]==cciaa:
>> context[i]=line
>> i=i+1
>> #print "context", context
>>
>> d2 = { k:v.split(";") for k,v in context.items() }
>> j=0
>> datilist={}
>> field_names = ['Provincia CCIAA', 'Data Ora', 'Numero REA',
>> 'Forma Giuridica', 'Count dati']
>> f=open('static/tmp/dati.csv', 'w')
>> writer = csv.writer(f) #questa definisce la variabile writer
>> usata x scrivere i dati nel file csv!!!
>> writer.writerow(field_names)
>>
>> while j<len(d2):
>> datilist[j]=[d2[j][0], d2[j][3], d2[j][5], d2[j][7],
>> d2[j][10].rstrip(), ''] #
>> writer.writerow(datilist[j])
>> j=j+1
>>
>> return render_to_response('showdata.html',
>> context_instance=RequestContext(request, {'dictdati': datilist} ))
>>
>> else:
>>
>> return render_to_response('home.html',
>> context_instance=RequestContext(request, {'var': d} ))
>>
>>
>> def showdata(request):
>> return render_to_response('showdata.html',
>> context_instance=RequestContext(request, context))
>>
>> showdata.html
>> <div class="container">
>> <div class="jumbotron">
>> <h1>Statistiche Dkey</h1>
>> <p>Ecco in forma tabellare i dati richiesti..</p>
>>
>> <form method="post" action="/getdata/">
>>
>> <style>
>> table { width: 90%; background-color: #FFFFFF; color:
>> #000000; }
>> th, td { width: 4%; }
>> </style>
>>
>> <table border="0" cellspacing="0" cellpadding="0"
>> align="center">
>> <thead>
>> <tr>
>> <th>Nome</th>
>> <th>Data_Ora</th>
>> <th>Numero</th>
>> <th>Forma</th>
>> <th>Count</th>
>>
>> </tr>
>> </thead>
>> <tbody>
>>
>> <tr>
>>
>> {% for key, item in dictdati.items %}
>>
>> {% for idx in item %}
>> {% if idx != '' %}
>> <td>{{ idx }}</td>
>> {% else %}
>> <tr><td></td></tr>
>> {% endif %}
>> {% endfor %}
>>
>> {% endfor %}
>> <tr>
>> </tbody>
>> </table>
>> </form>
>>
>> <p><a href="{{ MEDIA_URL }}/dati.csv">Download dei dati</a><p>
>>
>> </div>
>> </div> <!-- /container -->
>>
>>
>>
>>
>> Can someone give me some suggestion? Other posts didn't aided me.
>> Thanks.
>>
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