Skip to content
Related Articles

Related Articles

Django Models | Set – 1
  • Last Updated : 21 Jun, 2019

Prerequisites : Django Creating apps

Models –

According to Django Models, A model is the single, definitive source of information about your data. It contains the essential fields and behaviors of the data you’re storing. Generally, each model maps to a single database table.

The basics:

  • Each model is a Python class that subclasses django.db.models.Model.
  • Each attribute of the model represents a database field.
  • With all of this, Django gives you an automatically-generated database-access API.

Django models are used as a structure to define fields and their types which will be saved in the database. Whatever changes we want to make in the database and want to store them in the database permanently are done using Django Models. A table for a phone in the database can be imagined as:
A database table for phone

Create table in database using Django –

We need to create a new app named product so that we can define all properties of phone described in the above-provided image. Open your terminal and run following command:



python manage.py startapp product

Now, our directory will be:
Directory after creating product app
After creating the app, don’t forget to mention it in geeks_site/settings.py under INSTALLED_APPS.

Installed apps after product

Also, register it with admin by adding following line of code to product/admin.py. By registering it with admin, you make sure that admin of the site will be aware that new table schema for database has been prepared.

filter_none

edit
close

play_arrow

link
brightness_4
code

   
from django.contrib import admin
  
# Register your models here.
from product.models import Phone
  
admin.site.register(Phone)

chevron_right


Now, navigate to product/models.py. You will see a file with following lines:

filter_none

edit
close

play_arrow

link
brightness_4
code

   
from django.db import models
  
# Create your models here.

chevron_right


We use a python class to define models which inherit parent class named Model defined in django.db.models package.

Add the following lines of code to this file:

filter_none

edit
close

play_arrow

link
brightness_4
code

   
  
from django.db import models
  
# Create your models here.
class Phone(models.Model):
    Price = models.IntegerField()
    RAM = models.IntegerField()
    ROM = models.IntegerField()
    Front_camera = models.IntegerField()
    Rear_camera = models.IntegerField()
    Battery = models.IntegerField()
    Screen_size = models.DecimalField(max_digits = 2, decimal_places = 1)
    Color = models.CharField(max_length = 120)
    Quantity = models.IntegerField()

chevron_right


Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.

My Personal Notes arrow_drop_up
Recommended Articles
Page :