In my Django View file, I need to generate a CSV file from a list of tuples and store the CSV file into the FileField of my model.
class Bill(models.Model):
billId = models.IntegerField()
bill = models.FileField(upload_to='bills')
I searched on this site, and found some posts such as Django - how to create a file and save it to a model's FileField?, but the solutions can help me.
I need the CSV file to be stored in 'media/bills/' fold, and I hope the CSV file can be deleted together with the Bill object in the database.
I tried the following codes, but it cannot meet my requirements. For each file, it will generate two files 'output.csv' and 'output_xxesss.csv'. At the two files cannot be deleted by calling 'Bill.objects.all().delete()'.
path = join(settings.MEDIA_ROOT, 'bills', 'output.csv')
print path
f = open(path, 'w+b')
f.truncate()
csvWriter = csv.writer(f)
csvWriter.writerow(('A', 'B', 'C'))
for r in rs:
print r
csvWriter.writerow(convert(r))
bill = Bill()
bill.billId = 14
bill.bill.save('output.csv', File(f))
bill.save()
Thanks
I tried the following codes, but it can not delete the file by calling 'Bill.objects.all().delete()'.
bill = Bill()
bill.billId = 14
bill.bill.name = 'bills/output.csv'
bill.save()
If anyone comes to this post like me and is wondering how to save a csv file directly into a models.FileField
i recommend this way:
import csv
from io import StringIO
from django.core.files.base import ContentFile
row = ["Name", "Location", "Price"]
csv_buffer = StringIO()
csv_writer = csv.writer(csv_buffer)
csv_writer.writerow(row)
csv_file = ContentFile(csv_buffer.getvalue().encode('utf-8'))
bill.bill.save('output.csv', csv_file)
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