Django — Model Fields

Text Fields

name = models.CharField(max_length=100)      # Short text
slug = models.SlugField(unique=True)         # URL-safe text
email = models.EmailField()                  # Email validation
url = models.URLField()                      # URL validation
text = models.TextField()                    # Long text

Number Fields

age = models.IntegerField()                  # Integer
price = models.DecimalField(                 # Decimal
    max_digits=10, decimal_places=2
)
rating = models.FloatField()                 # Float
positive = models.PositiveIntegerField()     # Positive only
small = models.SmallIntegerField()           # -32768 to 32767

Date/Time Fields

date = models.DateField()                    # Date only
time = models.TimeField()                    # Time only
datetime = models.DateTimeField()            # Date and time
auto_now = models.DateTimeField(auto_now=True)          # On save
auto_now_add = models.DateTimeField(auto_now_add=True) # On create

File Fields

document = models.FileField(upload_to='documents/')
image = models.ImageField(upload_to='images/')

Relationship Fields

# ForeignKey (Many-to-One)
author = models.ForeignKey(User, on_delete=models.CASCADE)

# ManyToManyField
tags = models.ManyToManyField(Tag)

# OneToOneField
profile = models.OneToOneField(User, on_delete=models.CASCADE)

Field Validation

from django.core.validators import MinValueValidator, MaxValueValidator

age = models.IntegerField(
    validators=[MinValueValidator(0), MaxValueValidator(120)]
)

Mini Practice

1. Create a model with various field types
2. Add validators to fields
3. Set up file and image fields
4. Create relationships

Up Next

Continue with Queries — querying the database with ORM.