Flask caching multiple files in project

Question

I'm relatively new to Flask. I have multiple files in my flask project. Up until now, I was using current_app if I wanted to access app object from outside of app.py file.

Now I am trying to add cache to my app with flask-caching extension. I initialize this in my app.py

from flask_caching import Cache
...
cache = Cache(app, config={'CACHE_TYPE': 'simple'})

However I'm having troubles with uisng it with views.py file.

I have a resource class:

class MyEndpoint(Resource):
    def get(self):
        do_stuff_here

I don't know how to get cache object here to achieve this:

class MyEndpoint(Resource):
    @cache.cached(timeout=600)
    def get(self):
        do_stuff_here

I tried to do:

from app import cache -> ImportError: cannot import name 'cache'
@current_app.cache.cached -> RuntimeError: Working outside of application context.

Part of the structure of my project:

|
-app.py
|
--api
  |
  -__init__.py
  -views.py

@Quba, do you mind sharing how you ended up fixing this issue? — MarcioPorto
– MarcioPorto, Commented May 17, 2018 at 5:02
@Quba, still haven't figured out this issue. Can you give me some guidance on how to accomplish this? — MarcioPorto
– MarcioPorto, Commented May 21, 2018 at 5:10

Quba · Accepted Answer · 2018-05-21 12:19:36Z

30

I got it working. Just initialize Cache object in a different file:

common/extensions.py:

from flask_caching import Cache

cache = Cache()

and then in app.py:

from common.extensions import cache
app = Flask(__name__)
cache.init_app(app, config={'CACHE_TYPE': 'simple'})

answered May 21, 2018 at 12:19

Quba

5,3547 gold badges36 silver badges61 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Vigneswaran A Over a year ago

Unresolved reference 'Cache' . How to install the Cache?

Yan Yang Over a year ago

Life-safer for me, too. Lol

romeo14 · Accepted Answer · 2018-04-02 13:06:11Z

0

I had the same issue and this was because I was registering the modules of my app before I created the cache object. This creates a cyclic dependency where the module code tries to load the cache before it is created.

Register your modules in the flask app after initializing the cache. Then from app import cache should work fine inside your modules.

answered Apr 2, 2018 at 13:06

romeo14

5385 silver badges13 bronze badges

Collectives™ on Stack Overflow

Flask caching multiple files in project

2 Answers 2

2 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related