Django ORM Web Application

AIM

To develop a Django application to store and retrieve data from a database using Object Relational Mapping(ORM).

Entity Relationship Diagram

Procedure

1. Creating Repository:

   • First, a path to make a folder where git needs to be created is identified.
   • Fork the repository (https://github/gowriganeshns/django-orm-app)
   • Clone the repository

     git clone https://github.com/Nijeesh-bit/django-orm-app
     

   • After cloning the folder with the repository name django-orm-app will be created

2. Inside django-orm-app:

   • Write the following commands

   cd django-orm-app
   

   django-admin startproj myproj
   

   • Then move into the folder myproj where manage.py file is located. Now give the commands to create myapp

   python3 manage.py startapp myapp
   

   • Then change the necessary settings in the settings.py.

   from pathlib import Path
   import os
   

   ALLOWED_HOSTS = ['*']
   

   INSTALLED_APPS = [
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
     'myapp'
    ]
   

   STATICFILES_DIR=[
     os.path.join(BASE_DIR,'static')
    ]
   

3. Create a Super User:

   ```
   python3 manage.py makemigrations
   python3 manage.py migrate
   python3 manage.py createsuperuser
   ```
   

   • Enter the admin and password according to your preferences.
   • You will receive the command Superuser successfully created.
   • Visit the admin app at (http://127.0.0.1:8000/admin) and log in with the superuser account that you have created:

4. Write the code: - Write the given codes in models.py and admin.py

5. Run the code: - Make migrations python3 manage.py makemigrations myapp python3 manage.py migrate myapp - In the admin interface (http://127.0.0.1:8000/admin) following web interface will be obtained. - Now add 10 employee details having only 5 post.

PROGRAM

models.py

from django.db import models
from django.contrib import admin

class Student(models.Model):
    referencenumber=models.CharField(max_length=20,help_text="refernce number")
    name=models.CharField(max_length=100)
    age=models.IntegerField()
    email=models.EmailField()
    phonenumber=models.IntegerField()

class StudentAdmin(admin.ModelAdmin):
    list_display=('referencenumber','name','age','email','phonenumber')

class Employee (models.Model):
    emp_id=models.CharField(primary_key=True,max_length=4,help_text='Employee ID')
    ename=models.CharField(max_length=50)
    post=models.CharField(max_length=20)
    salary=models.IntegerField()

class EmployeeAdmin(admin.ModelAdmin):
    list_display=('emp_id','ename','post','salary')

admin.py

from django.contrib import admin
from .models import Student,StudentAdmin,Employee,EmployeeAdmin
# Register your models here.
admin.site.register(Student,StudentAdmin)
admin.site.register(Employee,EmployeeAdmin)

OUTPUT

RESULT

Successfully Django application to store and retrieve data from a database using Object Relational Mapping(ORM).