Django MySQL database configuration and creating table

installing mysqlclient

Mysqlclient is an adopter for Python to work with MySQL database.

pip install mysqlclient

We will create one project plus2net

django-admin startproject plus2net

This will start a project plus2net. Now we will create a directory and place some files. Inside plus2net directory we have one manage.py , this we will use to run our server

change directory to plus2net

cd plus2net

Now run the server

python manage.py runserver

Once the server is running we can see the home page. Now open the URL

http://127.0.0.1:8000/

Creating an app We will create one app in the name student.

python manage.py startapp student

Connecting to MySQL

Our settings.py is located inside plus2net directory. Inside this file we will store our MySQL connection details.

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'django',
		'USER' : 'userid',
		'PASSWORD' :'password',
		'HOST' : 'localhost'
    }
}

Creating a model

Inside models.py

class student(models.Model):
    
	st_name =models.CharField(max_length=100)
	st_class=models.CharField(max_length=20)
	st_sex  =models.CharField(max_length=20)
	st_mark =models.IntegerField()

We need to add this app to our settings

INSTALLED_APPS = [
    'student.apps.StudentConfig',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

python manage.py migrate

python manage.py makemigrations

Once the migration is done , we will get a file inside migration folder
0001_initial.py

# Generated by Django 2.2.5 on 2020-01-13 02:20

from django.db import migrations, models


class Migration(migrations.Migration):

    initial = True

    dependencies = [
    ]

    operations = [
        migrations.CreateModel(
            name='student',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('st_name', models.CharField(max_length=100)),
                ('st_class', models.CharField(max_length=20)),
                ('st_sex', models.CharField(max_length=20)),
                ('st_mark', models.IntegerField()),
            ],
        ),
    ]

python manage.py sqlmigrate student 0001_initial

It will show us one SQL statement. Here it is

BEGIN;
--
-- Create model student
--
CREATE TABLE `student_student` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `st_name` varchar(100) NOT NULL, `st_class` varchar(20) NOT NULL, `st_sex` varchar(20) NOT NULL, `st_mark` integer NOT NULL);
COMMIT;

This will not create tables in our MySQL database , we have to do that now.

python manage.py migrate

This will run all our migrations and you will see screen like this

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions, student
Running migrations:
  Applying student.0001_initial... OK

Now this will create tables inside our database ( Check the database name you have given inside settings.py file ).

Note that this table is created with the help of Django. We have not written any SQL code to create the table. Check your PhpMyAdmin to verify the table.

Adding data to table

We can create one superuser and use the Django Admin interface to add data to our student table.

Admin to add data to student table Display data from MySQL table
Web form data inserting to MySQL table Adding multiple records to MySQL table

Django for loop form Python- Tutorials

Subhendu Mohapatra

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Django & MySQL Database

installing mysqlclient

Connecting to MySQL

Creating a model

Adding data to table

Subhendu Mohapatra