Python: Flask static digest is used to handle the problem of static file caching

Flask-Static-Digest Used to process static files

file ：​ ​https://github.com/nickjj/flask-static-digest​​

install

pip install Flask-Static-Digest


1.

Examples of use

# -*- coding: utf-8 -*-



from flask import Flask, render_template

from flask_static_digest import FlaskStaticDigest





app = Flask(__name__)



# register

FlaskStaticDigest(app)



# route

@app.route('/')

def hello_world():

 return render_template('index.html')





if __name__ == '__main__':

 app.run(debug=True)


1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.

index.html

<script type="text/javascript" src="{{ url_for('static', filename='js/index.js') }}"></script>



<script type="text/javascript" src="{{ static_url_for('static', filename='js/index.js') }}"></script>


1.
2.
3.

Configure environment variables .env

FLASK_APP=hello.app

FLASK_ENV=development


1.
2.

Command line execution

$ flask digest compile


1.

Start the service

​ ​http://127.0.0.1:5500/​​

Render the result

<!-- url_for -->

<script type="text/javascript" src="/static/js/index.js"></script>



<!-- static_url_for -->

<script type="text/javascript" src="/static/js/index-14362f024c1b0d8a50e669443e935e45.js"></script>


1.
2.
3.
4.
5.

Configuration parameters

FLASK_STATIC_DIGEST_BLACKLIST_FILTER = []

# If you want specific extensions to not get md5 tagged you can add them to

# the list, such as: [".htm", ".html", ".txt"]. Make sure to include the ".".



FLASK_STATIC_DIGEST_GZIP_FILES = True

# When set to False then gzipped files will not be created but static files

# will still get md5 tagged.



FLASK_STATIC_DIGEST_HOST_URL = None

# When set to a value such as https://cdn.example.com and you use static_url_for

# it will prefix your static path with this URL. This would be useful if you

# host your files from a CDN. Make sure to include the protocol (aka. https://).


1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.