# Django Guardian

***

**1. Creating and Applying Permissions**

```python
# Create a new permission
permission = Permission.objects.create(
    codename='can_edit_articles',
    name='Can edit articles'
)

# Add the permission to a group
group = Group.objects.get(name='Editors')
group.permissions.add(permission)

# Apply the permission to a user
user = User.objects.get(username='john')
user.user_permissions.add(permission)
```

**2. Checking Permissions**

```python
# Check if a user has a specific permission
user.has_perm('can_edit_articles')

# Check if a group has a specific permission
group.has_perm('can_edit_articles')
```

**3. Filtering Objects Based on Permissions**

```python
# Get all articles that the current user has permission to edit
articles = Article.objects.filter(
    permissions__codename='can_edit_articles'
)
```

**4. Assigning Permissions to Objects**

```python
# Create a new article
article = Article.objects.create(title='My Article')

# Assign the 'can_edit_articles' permission to the article
permission = Permission.objects.get(codename='can_edit_articles')
article.permissions.add(permission)
```

**5. Checking Permissions on Objects**

```python
# Check if a user has permission to edit a specific article
user.has_perm('can_edit_articles', article)
```

**6. Granting Temporary Permissions**

```python
# Grant a user temporary permission to edit an article
user.grant_temporary_permission(
    permission,
    article,
    expiration_date=datetime.now() + timedelta(days=1)
)
```

**7. Revoking Permissions**

```python
# Revoke a user's permission to edit an article
user.user_permissions.remove(permission)
```

**8. Permissions for Foreign Keys**

```python
# Create a permission for the 'author' field of the 'Article' model
permission = Permission.objects.create(
    codename='can_edit_article_author',
    name='Can edit article author',
    content_type=ContentType.objects.get_for_model(Article),
    field_name='author'
)
```

**9. Permissions for Model Fields**

```python
# Create a permission for the 'title' field of the 'Article' model
permission = Permission.objects.create(
    codename='can_edit_article_title',
    name='Can edit article title',
    content_type=ContentType.objects.get_for_model(Article),
    field_name='title'
)
```

**10. Permissions for Related Objects**

```python
# Create a permission for the 'comments' field of the 'Article' model
permission = Permission.objects.create(
    codename='can_edit_article_comments',
    name='Can edit article comments',
    content_type=ContentType.objects.get_for_model(Article),
    field_name='comments'
)
```

**11. Permissions for Multi-Table Inheritance**

```python
# Create a permission for the 'parent' field of the 'Article' model
permission = Permission.objects.create(
    codename='can_edit_article_parent',
    name='Can edit article parent',
    content_type=ContentType.objects.get_for_model(Article),
    field_name='parent'
)
```

**12. Permissions for Proxies**

```python
# Create a permission for the 'article' field of the 'ArticleProxy' model
permission = Permission.objects.create(
    codename='can_edit_articleproxy_article',
    name='Can edit articleproxy article',
    content_type=ContentType.objects.get_for_model(ArticleProxy),
    field_name='article'
)
```

**13. Permissions for Managers**

```python
# Create a permission for the 'objects' manager of the 'Article' model
permission = Permission.objects.create(
    codename='can_edit_article_objects',
    name='Can edit article objects',
    content_type=ContentType.objects.get_for_model(Article),
    field_name='objects'
)
```

**14. Permissions for Django Rest Framework**

```python
# Create a permission for the 'list' and 'create' actions of the 'ArticleViewSet'
permission = Permission.objects.create(
    codename='can_list_and_create_articles',
    name='Can list and create articles',
    content_type=ContentType.objects.get_for_model(ArticleViewSet),
    field_name='list'
)
```

**15. Permissions for Django Rest Framework (Actions)**

```python
# Create a permission for the 'list' action of the 'ArticleViewSet'
permission = Permission.objects.create(
    codename='can_list_articles',
    name='Can list articles',
    content_type=ContentType.objects.get_for_model(ArticleViewSet),
    field_name='list'
)
```

**16. Permissions for Django Rest Framework (Actions with Field Names)**

```python
# Create a permission for the 'retrieve' action of the 'ArticleViewSet'
permission = Permission.

```