CODEWITHSUNDEEP
pythonflask
Vladimir Despotovic
Vladimir Despotovic

Reputation: 3498

In Flask, how to make all subroutes pass also through the common parent route?

I have routes for my rest service:

localhost/rest/get/user
localhost/rest/get/logs/username
localhost/rest/post/user

etc. I have them registered as blueprints like so:

app.register_blueprint(rest, url_prefix="/rest")
app.register_blueprint(rest_get, url_prefix="/rest/get")
app.register_blueprint(rest_post, url_prefix="/rest/post")

I want however, that both the /rest/get routes and /rest/post routes all pass also through the common /rest route so that I can add some before_request checks to them. However this is not the case per default, the Flask just routes the request to the most specific one. How do I make it also look in to the parent route? So in rest.py I have:

@rest.before_request
@jwt_required(locations=["headers"])
def before_request():
    print("************************************************* in rest in before_request")
    pass

However, it is ignored and just goes to the one in rest_get.py, which is:

rest_get = Blueprint("rest_get", __name__)

@rest_get.before_request
@jwt_required(locations=["headers"])
def before_request():
    print("************************************ in rest_get in before_request")
    pass

How do I do this?

Upvotes: 1

Views: 763

Answers (1)

Abinav R
Abinav R

Reputation: 375

As I understand you perform certain operations in the common route and you would want your subroutes to perform these operations before executing the function corresponding to the subroute.

The easiest thing I can think of if to implement the common operation as a separate class or function and call it in every route, subroute etc

For example

@app.route("/rest")
def base():
    response = common_operation()
    return response.json()

@app.route("/rest/sr1")
def subroute1():
    op = common_operation()
    op1 = further_operations(op)
    return op1

Something like this is what I do and suggest the same.

Upvotes: 1

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