FloatField - Django Models - GeeksforGeeks

12 Feb, 2020
FloatField is a floating-point number represented in Python by a float instance. This field is generally used to store huge floating point numbers in the database. The default form widget for this field is a NumberInput when localize is False or TextInput otherwise.
Syntax:
field_name = models.FloatField(**options)
Illustration of FloatField using an Example. Consider a project named geeksforgeeks having an app named geeks.
Refer to the following articles to check how to create a project and an app in Django.
How to Create a Basic Project using MVT in Django?
How to Create an App in Django ?
Enter the following code into models.py file of geeks app.
from django.db import modelsfrom django.db.models import Model# Create your models here.  class GeeksModel(Model):    geeks_field = models.FloatField()
Add the geeks app to INSTALLED_APPS
# Application definition  INSTALLED_APPS = [    'django.contrib.admin',    'django.contrib.auth',    'django.contrib.contenttypes',    'django.contrib.sessions',    'django.contrib.messages',    'django.contrib.staticfiles',    'geeks',]
Now when we run makemigrations command from the terminal,
Python manage.py makemigrations
A new folder named migrations would be created in geeks directory with a file named 0001_initial.py
# Generated by Django 2.2.5 on 2019-09-25 06:00  from django.db import migrations, models  class Migration(migrations.Migration):      initial = True      dependencies = [    ]      operations = [        migrations.CreateModel(            name ='GeeksModel',            fields =[                ('id',                   models.AutoField(                  auto_created = True,                  primary_key = True,                  serialize = False,                   verbose_name ='ID'                )),                ('geeks_field',                   models.FloatField()),            ],        ),    ]
Now run,
Python manage.py migrate
Thus, an geeks_field FloatField is created when you run migrations on the project. It is a field to store a floating-point number.
FloatField is used for storing a floating-point number represented in Python by a float instance. To know more about float, visit float() in Python. Let’s try to save a flating number in FlatField.
# importing the model# from geeks appfrom geeks.models import GeeksModel  # creating an instance of# floatd = float(21.89)  # creating a instance of # GeeksModelgeek_object = GeeksModel.objects.create(geeks_field = d)geek_object.save()
Now let’s check it in admin server. We have created an instance of GeeksModel.
Field Options are the arguments given to each field for applying some constraint or imparting a particular characteristic to a particular Field. For example, adding an argument null = True to FloatField will enable it to store empty values for that table in relational database.Here are the field options and attributes that an FloatField can use.
NaveenArora
Django-models
Python Django
Python
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