将数据从CSV文件存储到数据库中

Question

I have a Django model of a hostel with one of the field FileUpload from which I will take a CSV file and populate the database, I have been trying for past two days searching how to do that, but could not get that working This how to import csv data into django models question works but only if I have the path for the file, and I tried many ways but were not successful. Also after that I tried searching harder How do I get a files absolute path after being uploaded in Django? I saw this but even then I could not get it working as it shows some errors

I used this URL mapping url(r'^test/$',views.FileUpload.as_view(),name="test")

But it is showing some namespace error. Please tell me how should I do it, if you have some suggestions to me how should I start again, I am feeling really lost. I want to get a file from a user and then populate the database

Can this( How do I transfer data in .csv file into my sqlite database in django? ) be made like we could create a form with a filefield that accepts csv and then populating the database by parsing that, Problem in that is we could not hard code the path. So how should we do that.

EDIT views.py

from django.views import View
class FileUpload(View):
    def post(self, request):
        form = DocumentForm(request.POST, request.FILES)
        if form.is_valid():
            initial_obj = form.save(commit=False)
            data=initial_obj['document']
            with open((data),'rb') as csvfile:
                spamreader = csv.reader(csvfile)
                for row in spamreader:
                    _, created=Document.objects.get_or_create(
                    name=row[0],
                    description = row[1],
                    importance=row[2],
                    )

            initial_obj.save()
            form.save()
            return redirect('/')
        else:
            return render(request,'file_upload_form.html',{'form':form})

    def get(self, request):
        return render(request, 'file_upload_form.html', {'form': form,})

forms.py

class DocumentForm(forms.ModelForm):
    class Meta:
        model = Document
        fields = ('description', 'document', )

models.py

class Document(models.Model):
    name=models.CharField(max_length=50,blank=True)
    description=models.CharField(max_length=255, blank=True)
    importance=models.CharField(max_length=10, default="High")
    document = models.FileField(upload_to='documents/')
    uploaded_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.description

I am not getting any errors but it is not saving data in the database from the CSV file and redirects me to the same page where uploading has to be done and shows the error "This field is required" for the document field.

Updates : I solved the problem more details here

Answer 1

You can easily override the clean() method of your form, and save your custom data content into database

 def clean(self):
    super(DocumentForm, self).clean()
    import csv
    with open((self.cleaned_data['file']), 'rb') as csvfile:
    spamreader = csv.reader(csvfile)
    for row in spamreader:
        // DO WHATEVER YOU WANT