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How to create Django Model ? | Create Model and insert Object data using Django Shell


What is model in django ?


A model is a class that represents table or collection in our DB, and where every attribute of the class is a field of the table or collection. Models are defined in the Create_Model_App/models.py


Dreamreal model created as an example:

model.py:

from django.db import models

class Dreamreal(models.Model):

website = models.CharField(max_length = 50)

mail = models.CharField(max_length = 50)

name = models.CharField(max_length = 50)

phonenumber = models.IntegerField()

class Meta:

db_table = "dreamreal"

And then after use command :

>python manage.py makemigrations

Output:


If you make any changes in module object then run this code in Django shell script:

>python manage.py migrate


Start shell in cmd:

>python manage.py shell

Import Module class as:

>form create_model_App.models import Dreamreal,Online


Now table is created and we enter and display data form this table:


Check table record by id. It means we can check what numbers of time we will added record


Another way to save record in a table: First define a model and entered record one by one in models or django tables.

> a = Dreamreal()

> a.website = "www.codersarts.com"

> a.mail = "codersarts@gmail.com"

> a.name = "jitendra"

> a.phonenumber = "9999999999"

> a.save()

If we want to display data with group means one object link with another objects then we add these line in our code:

Model.py

from django.db import models

class Dreamreal(models.Model): website = models.CharField(max_length = 50) mail = models.CharField(max_length = 50) name = models.CharField(max_length = 50) phonenumber = models.IntegerField() def __str__(self): return self.website + '----' + self.mail

After change code first we exit( by using( >exit )command) from shell then and back to database API by using these commands:


Now import show result again:


Filteration using filter to specify output:

Use this in python shell:

>Dreamreal.objects.filter(id=1)

To see structure of Dreamreal module add some line in admin.py.

Admin.py:

from django.contrib import admin

from .models import Dreamreal

# Register your models here. admin.site.register(Dreamreal)

output result:


Click on Dreamreals

output show all previous add data which added through view.py or shell

If you want to make any changes in data then click one of a the object. And make changes by this.

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