Blueprint's before_request not called (Flask)

Question

I'm working on someone's else code and cannot find how to make the

before_request

function called.

Am I doing anything wrong ?

In

main.py

I have

from server.api.line.blueprint import line_api_blueprint

from server.api.stopping_point.blueprint import stopping_point_blueprint



app = Flask(__name__)

app.register_blueprint(line_api_blueprint, url_prefix=u"/api/line")

app.register_blueprint(stopping_point_blueprint, url_prefix=u"/api/stopping_point")



@line_api_blueprint.before_request

@stopping_point_blueprint.before_request

def check_if_connected():

    print "\n\n\n LOOOOOOL \n\n\n" # never printed

In

line/blueprint.py

line_api_blueprint = Blueprint(u'line_api', __name__)



line_api = Factory().build(u"LineApi")





@line_api_blueprint.route(u'/', methods=[u"GET"])

def line():

    if request.method == u"GET":

        return jsonify({

            u"items": line_api.list()

        }), 200

[edit]

It works well if I move the

before_request

handler to the blueprint file. So I guess it has something to do with the import but when I print

section_api_blueprint

, it says it's a correct blueprint object.

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Answer 1

Flask doesn't see what happens to the blueprint after it is registered. All setup, such as registering before request functions, must happen before registering the blueprint. Typically, things are registered near the blueprint's definition or in it's package, not after a semantically unrelated import.

Blueprint's before_request not called (Flask)

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