Making a Pickle field in Django models

PythonServer Side ProgrammingProgramming

Pickle in Python is primarily used in serializing and deserializing a Python object structure. In other words, it's the process of converting a Python object into a byte stream to store it in a file/database, maintain program state across sessions, or transport data over the network

In this article, we are going to see how to make a Django field which will save pickle objects. We will only work with models.py and Django shell

First of all, install the django-picklefield package −

pip install django-picklefield

Example

In models.py

from django.db import models
from picklefield.fields import PickledObjectField

# Create your models here.
class new_model(models.Model):
   args = PickledObjectField()

Here, we created a model and added the pickle field.

Now let's check if it works or not. On the terminal run "python manage.py shell" and type the following −

from myapp.models import *
obj=new_model(args=['fancy', {'objects': 'inside'}]).save()
new_model.objects.all()

We run the shell and create a new model instance that can store pickle objects. Any object stored in it will be converted to a pickle object.

To save in models, you can write like this −

from django.http import HttpResponse
def my_view(request):
   Object=new_model(args=['fancy',{'name': 'ath'}])
   Object.save()
   return HttpResponse("Object saved")

You can add any pickle object or anything that can be pickeled in this field.

Output

In [4]: new_model.objects.all()
Out[4]:<QuerySet [<new_model: new_model object (1)>]>
raja
Published on 26-Aug-2021 12:14:43
Advertisements