Migrations concept and workflow in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new migration for your Django app.

Django

python manage.py [1]

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

Arunserver

Bmakemigrations

Ccreatesuperuser

Dmigrate

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'migrate' instead of 'makemigrations' to create migration files.

Running 'runserver' expecting migrations to be created.

Use makemigrations to create new migration files based on model changes.

2fill in blank

medium

Complete the code to apply all pending migrations to the database.

Django

python manage.py [1]

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

Amigrate

Bshell

Cflush

Dmakemigrations

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'makemigrations' to apply migrations instead of creating them.

Using 'flush' which deletes data instead of applying migrations.

The migrate command applies migrations to update the database schema.

3fill in blank

hard

Fix the error in the migration command to specify the app name.

Django

python manage.py makemigrations [1]

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

Amyapp

Bmigrate

Call

Drunserver

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'all' or 'migrate' as app names.

Omitting the app name when you want to target a specific app.

Specify your app name (e.g., myapp) to create migrations only for that app.

4fill in blank

hard

Fill both blanks to create a migration that adds a new field to a model.

Django

class Migration(migrations.Migration):
    dependencies = [
        ('[1]', '0001_initial'),
    ]

    operations = [
        migrations.AddField(
            model_name='[2]',
            name='new_field',
            field=models.CharField(max_length=100),
        ),
    ]

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

Ablog

Bpost

Cuser

Dcomment

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up app name and model name.

Using capitalized model names in model_name.

The dependencies list must include the app name and previous migration. The model_name is the model receiving the new field.

5fill in blank

hard

Fill all three blanks to write a migration that removes a field from a model.

Django

class Migration(migrations.Migration):
    dependencies = [
        ('[1]', '0002_auto_20240101_1234'),
    ]

    operations = [
        migrations.RemoveField(
            model_name='[2]',
            name='[3]',
        ),
    ]

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

Ashop

Bproduct

Cdescription

Dprice

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong migration dependency name.

Confusing field name with model name.

The dependencies specify the app and migration to depend on. The model_name is the model to change, and name is the field to remove.