Save an Auto Generated PDF File to Django model

To save a auto-generated PDF file to your model, like what we do with render_to_pdf, you can use the below code snippet. Be sure to use Python 3.5+ for this one.

from io import BytesIO
from django.core.files import File
from .utils import render_to_pdf

# models.py
class YourModel(models.Model):
       slug 			        = models.CharField(max_length=120)
       pdf 					= models.FileField(upload_to='pdfs/', null=True, blank=True)
  

# to generate and save your pdf to your model

def generate_obj_pdf(instance_id):
     obj = YouModel.objects.get(id=instance_id)
     context = {'instance': obj}
     pdf = render_to_pdf('your/pdf/template.html', context)
     filename = "YourPDF_Order{}.pdf" %(obj.slug)
     obj.pdf.save(filename, File(BytesIO(pdf.content)))

Simple enough right? Did you try it out?