Storing an Integer Array in a Django Database

What is the best way to store an array of integers in a django database?

(only for Django with Postgres DB)

You can use ArrayField with base_field IntegerField

A field for storing lists of data. Most field types can be used, and you pass another field instance as the base_field. You may also specify a size. ArrayField can be nested to store multi-dimensional arrays.

ArrayField(
    models.IntegerField(),
    blank=True,  # Optional: allows the array to be empty
    default=list  # Default value is an empty list
)

From 2018

CommaSeparatedIntergerField is no more available since Django 1.9:

From Docs:

Deprecated since version 1.9: This field is deprecated in favor of CharField with validators=[validate_comma_separated_integer_list].

By default it sets a comma separated integer list field.

int_list_validator

Returns a RegexValidator instance that ensures a string consists of integers separated by sep. It allows negative integers when allow_negative is True.

from django.db import models
from django.core.validators import int_list_validator


class YourModel(models.Model):
    ....
    ....
    int_list = models.CharField(validators=int_list_validator)   
    ....