# Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque- string'} Endpoints Many times in an API, your resource resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This

def get(self): # Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'} 1.2.3 Endpoints Many times in an API, your resource will resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This field will not

def get(self): # Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'} 1.2.3 Endpoints Many times in an API, your resource will resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } 6 Chapter 1. User’s Guide Flask-RESTful Documentation, Release 0.3.6 class TodoDao(object): def __init__(self, todo_id, task): self.todo_id

# Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque- string'} Endpoints Many times in an API, your resource resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This

def get(self): # Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'} 1.2.3 Endpoints Many times in an API, your resource will resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This field will not

def get(self): # Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'} 1.2.3 Endpoints Many times in an API, your resource will resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This field will not

# Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque- string'} Endpoints Many times in an API, your resource resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This

# Default to 200 OK return {'task': 'Hello world'} class Todo2(Resource): def get(self): # Set the response code to 201 return {'task': 'Hello world'}, 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque- string'} Endpoints Many times in an API, your resource resource_fields = { 'task': fields.String, 'uri': fields.Url('todo_ep') } class TodoDao(object): def __init__(self, todo_id, task): self.todo_id = todo_id self.task = task # This

HTTP Method Overrides Request Content Checksums Celery Background Tasks Install Configure An example task Run a worker Subclassing Flask Single-Page Applications Larger Applications Imagine a simple flask application has a long running task, such as processing some uploaded data or sending email, you don’t want to wait for it to finish during a request. Instead, use a task queue to send the necessary data data to another process that will run the task in the background while the request returns immediately. Celery is a powerful task queue that can be used for simple background tasks as well as complex multi-stage

application has a long running task, such as processing some uploaded data or sending email, you don’t want to wait for it to finish during a request. Instead, use a task queue to send the necessary data process that will run the task in the background while the request returns immediately. 1.21. Patterns for Flask 153 Flask Documentation (1.1.x), Release 1.1.4 Celery is a powerful task queue that can be used update(app.config) class ContextTask(celery.Task): def __call__(self, *args, **kwargs): with app.app_context(): return self.run(*args, **kwargs) celery.Task = ContextTask return celery The function