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Register global request handler for all blueprints in Flask [duplicate]

Application-wide request hooks in Flask. How to implement?How to get data received in Flask requestChange blueprints or Reload flask app during runtimeregistering a custom error handler on routes prefixed with something specificNested Blueprints in Flask?Flask Blueprint Initialization - Initializing some global variablesFlask-restful not-found handling for blueprintHow can a before-request function be registered on a third-party Flask Blueprint, at the time of Blueprint registration?blueprint template folder flask not workingflask app gives 404 for non-root routeFlask blueprint architecture issues

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0

This question already has an answer here:

• 
  Application-wide request hooks in Flask. How to implement?
  
  1 answer
  
  

I'm trying to register before_request and after_request handlers for all routes (in all blueprints) in Flask.

It's easy to register for a single blueprint:

main = flask.Blueprint('main', __name__)

@main.before_request
def do_something():
 flask.request.my_value = 'my_value'

However, I don't know how to accomplish this for all Blueprints. Specifically because I use a factory function to create my app:

def create_app():
 from my_package.blueprints.main import main
 from my_package.blueprints.user import user

 app = Flask(__name__)
 app.register_blueprint(main)
 app.register_blueprint(user)

 return app

Ideally I would like to keep all of my middleware functions in a separate file with something like a root or super Blueprint. Alternatively I suppose I could iterate over all Blueprints on the app object and register these handlers on each, but that seems redundant.

python flask

share|improve this question

edited Mar 22 at 23:57

Grey Li

3,33911634

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

marked as duplicate by davidism flask
Users with the  flask badge can single-handedly close flask questions as duplicates and reopen them as needed.

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Mar 23 at 0:17

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment | 

0

This question already has an answer here:

• 
  Application-wide request hooks in Flask. How to implement?
  
  1 answer
  
  

I'm trying to register before_request and after_request handlers for all routes (in all blueprints) in Flask.

It's easy to register for a single blueprint:

main = flask.Blueprint('main', __name__)

@main.before_request
def do_something():
 flask.request.my_value = 'my_value'

However, I don't know how to accomplish this for all Blueprints. Specifically because I use a factory function to create my app:

def create_app():
 from my_package.blueprints.main import main
 from my_package.blueprints.user import user

 app = Flask(__name__)
 app.register_blueprint(main)
 app.register_blueprint(user)

 return app

Ideally I would like to keep all of my middleware functions in a separate file with something like a root or super Blueprint. Alternatively I suppose I could iterate over all Blueprints on the app object and register these handlers on each, but that seems redundant.

python flask

share|improve this question

edited Mar 22 at 23:57

Grey Li

3,33911634

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

marked as duplicate by davidism flask
Users with the  flask badge can single-handedly close flask questions as duplicates and reopen them as needed.

StackExchange.ready(function()
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function()
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
function()
$hover.showInfoMessage('',
messageElement: $msg.clone().show(),
transient: false,
position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
dismissable: false,
relativeToBody: true
);
,
function()
StackExchange.helpers.removeMessages();

);
);
);
Mar 23 at 0:17

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment | 

This question already has an answer here:

• 
  Application-wide request hooks in Flask. How to implement?
  
  1 answer
  
  

I'm trying to register before_request and after_request handlers for all routes (in all blueprints) in Flask.

It's easy to register for a single blueprint:

main = flask.Blueprint('main', __name__)

@main.before_request
def do_something():
 flask.request.my_value = 'my_value'

However, I don't know how to accomplish this for all Blueprints. Specifically because I use a factory function to create my app:

def create_app():
 from my_package.blueprints.main import main
 from my_package.blueprints.user import user

 app = Flask(__name__)
 app.register_blueprint(main)
 app.register_blueprint(user)

 return app

Ideally I would like to keep all of my middleware functions in a separate file with something like a root or super Blueprint. Alternatively I suppose I could iterate over all Blueprints on the app object and register these handlers on each, but that seems redundant.

python flask

share|improve this question

edited Mar 22 at 23:57

Grey Li

3,33911634

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

main = flask.Blueprint('main', __name__)

@main.before_request
def do_something():
 flask.request.my_value = 'my_value'

def create_app():
 from my_package.blueprints.main import main
 from my_package.blueprints.user import user

 app = Flask(__name__)
 app.register_blueprint(main)
 app.register_blueprint(user)

 return app

share|improve this question

edited Mar 22 at 23:57

Grey Li

3,33911634

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

share|improve this question

edited Mar 22 at 23:57

Grey Li

3,33911634

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

edited Mar 22 at 23:57

Grey Li

3,33911634

edited Mar 22 at 23:57

Grey Li

3,33911634

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

asked Mar 22 at 22:21

diplosaurusdiplosaurus

1,20121436

1 Answer
1

active

oldest

votes

1

Method 1

You can use before_app_request and after_app_request to register global handler on any blueprint:

@any_bp.before_app_request
def before_all_request:
 pass

Method 2

Use before_request and after_request, but register request handler direct for app in application factory:

def create_app():
 app = Flask(__name__)

 @app.before_request
 def before_all_request:
 pass

 return app

share|improve this answer

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634

add a comment | 

1

Method 1

You can use before_app_request and after_app_request to register global handler on any blueprint:

@any_bp.before_app_request
def before_all_request:
 pass

Method 2

Use before_request and after_request, but register request handler direct for app in application factory:

def create_app():
 app = Flask(__name__)

 @app.before_request
 def before_all_request:
 pass

 return app

share|improve this answer

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634

add a comment | 

1

Method 1

You can use before_app_request and after_app_request to register global handler on any blueprint:

@any_bp.before_app_request
def before_all_request:
 pass

Method 2

Use before_request and after_request, but register request handler direct for app in application factory:

def create_app():
 app = Flask(__name__)

 @app.before_request
 def before_all_request:
 pass

 return app

share|improve this answer

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634

add a comment | 

Method 1

You can use before_app_request and after_app_request to register global handler on any blueprint:

@any_bp.before_app_request
def before_all_request:
 pass

Method 2

Use before_request and after_request, but register request handler direct for app in application factory:

def create_app():
 app = Flask(__name__)

 @app.before_request
 def before_all_request:
 pass

 return app

share|improve this answer

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634

@any_bp.before_app_request
def before_all_request:
 pass

def create_app():
 app = Flask(__name__)

 @app.before_request
 def before_all_request:
 pass

 return app

share|improve this answer

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634

answered Mar 22 at 23:40

Grey LiGrey Li

3,33911634