## Flask-middlewares
Allows you to use middleware in Flask
### Installation
`pip install Flask-Middlewares`
### Example
```python
from typing import Callable
from flask import Flask, Blueprint
from pyhandling.annotations import decorator
from flask_middlewares import MultipleMiddlewareRegistrar
from flask_middlewares.tools import EVERYTHING
app = Flask(__name__)
api_blueprint = Blueprint('api', __name__)
view_blueprint = Blueprint('views', __name__)
def concatenation_by(line: str) -> decorator:
"""
Function for a decorator that concatenates the result of the decorated
function with the input result of this function.
"""
def decorator(func: Callable) -> Callable:
def wrapper(*args, **kwargs) -> str:
return func(*args, **kwargs) + ' ' + line
return wrapper
return decorator
# Config for creating a middleware registrar for your application
# See the MiddlewareRegistrar.from_config documentation.
app.config["ENVIRONMENTS"] = {
"global": {
"MIDDLEWARES": [concatenation_by("from global")],
"VIEW_NAMES": EVERYTHING
},
'api': {
"USE_FOR_BLUEPRINT": True,
"MIDDLEWARES": [concatenation_by("from api")]
}
}
@app.route('/')
def index():
return "Real but fake home page" # Real but fake home page from global
@view_blueprint.route('/home')
def home_endpoint():
return "Real home page" # Real home page from global
@api_blueprint.route('/users')
def user_api_endpoint():
return "\"Some user data\"" # "Some user data" from global from api
app.register_blueprint(api_blueprint, url_prefix='/api')
app.register_blueprint(view_blueprint)
MultipleMiddlewareRegistrar.from_config(app.config, environments_only=True).init_app(app)
if __name__ == '__main__':
app.run(debug=True, port='8048')
```
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