Field options (max_length, null, blank, default) in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the maximum length of a CharField to 100.

Django

name = models.CharField(max_length=[1])

Drag options to blanks, or click blank then click option'

A100

B50

C255

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of an integer for max_length.

Omitting the max_length option for CharField.

The max_length option sets the maximum number of characters allowed in a CharField. Here, it should be 100.

2fill in blank

medium

Complete the code to allow the database field to store NULL values.

Django

age = models.IntegerField(null=[1])

Drag options to blanks, or click blank then click option'

ANone

B'True'

CTrue

DFalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string 'True' instead of the boolean True.

Confusing null with blank.

The null=True option allows the database to store NULL values for this field.

3fill in blank

hard

Fix the error in the code to allow the form to accept empty input for the field.

Django

email = models.EmailField(blank=[1])

Drag options to blanks, or click blank then click option'

A'False'

BNone

CFalse

DTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using blank=None which is invalid.

Confusing blank with null.

The blank=True option allows the form to accept empty input for this field.

4fill in blank

hard

Fill both blanks to set a default value and allow blank input for a CharField.

Django

status = models.CharField(max_length=20, default=[1], blank=[2])

Drag options to blanks, or click blank then click option'

A'pending'

BTrue

CFalse

D'active'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a boolean for default instead of a string.

Setting blank to False when empty input is needed.

The default option sets the default value to 'pending'. The blank=True option allows the form to accept empty input.

5fill in blank

hard

Fill all three blanks to create a TextField that allows NULL in database, blank input in forms, and has a default empty string.

Django

description = models.TextField(null=[1], blank=[2], default=[3])

Drag options to blanks, or click blank then click option'

AFalse

BTrue

C''

D'None'

Attempts:

3 left

💡 Hint

Common Mistakes

Setting default to 'None' string instead of empty string.

Confusing null and blank options.

null=True allows NULL in the database. blank=True allows empty input in forms. default='' sets the default to an empty string.