Which frontend SDK do you use?

supertokens-web-js / mobile

supertokens-auth-react

How to use

If you would like to change something pre or post our API logic, then use this method.

NodeJS

info

See all the functions that can be overrided here

import SuperTokens from "supertokens-node";
import Session from "supertokens-node/recipe/session";

SuperTokens.init({
    appInfo: {
        apiDomain: "...",
        appName: "...",
        websiteDomain: "..."
    },
    supertokens: {
        connectionURI: "...",
    },
    recipeList: [
        Session.init({
            override: {
                apis: (originalImplementation) => {
                    return {
                        ...originalImplementation,

                        // here we are only overriding the function that signs out a user
                        signOutPOST: async function (input) {

                            if (originalImplementation.signOutPOST === undefined) {
                                throw Error("Should never come here")
                            }
                            // TODO: some custom logic

                            // or call the default behaviour as show below
                            return await originalImplementation.signOutPOST(input);
                        },
                        // ...
                        // TODO: override more apis
                    }
                }
            }
        })
    ]
});

• originalImplementation is the object that contains apis that have the original implementation for this recipe. It can be used in your apis as a way to use the SuperTokens' default behaviour.
• In the above code snippet, we override the signOutPOST api of this recipe.

GoLang

info

See all the functions that can be overrided here

import (
    "github.com/supertokens/supertokens-golang/recipe/session"
    "github.com/supertokens/supertokens-golang/recipe/session/sessmodels"
    "github.com/supertokens/supertokens-golang/supertokens"
)

func main() {
    supertokens.Init(supertokens.TypeInput{
        RecipeList: []supertokens.Recipe{
            session.Init(&sessmodels.TypeInput{
                Override: &sessmodels.OverrideStruct{
                    APIs: func(originalImplementation sessmodels.APIInterface) sessmodels.APIInterface {
                        // First we make a copy of the original implementation
                        originalSignOutPOST := *originalImplementation.SignOutPOST

                        // Then we override the default impl
                        (*originalImplementation.SignOutPOST) = func(sessionContainer sessmodels.SessionContainer, options sessmodels.APIOptions, userContext supertokens.UserContext) (sessmodels.SignOutPOSTResponse, error) {
                            // TODO: some custom logic

                            // or call the default behaviour as show below
                            return originalSignOutPOST(sessionContainer, options, userContext)
                        }

                        return originalImplementation
                    },
                },
            }),
        },
    })
}

• originalImplementation is the object that contains apis that have the original implementation for this recipe. It can be used in your apis as a way to use the SuperTokens' default behaviour.
• In the above code snippet, we override the signOutPOST api of this recipe.

Python

info

See all the functions that can be overrided here

from supertokens_python import init, InputAppInfo
from supertokens_python.recipe import session
from supertokens_python.recipe.session.interfaces import APIInterface, APIOptions
from typing import Dict, Any, Optional

def override_session_apis(original_implementation: APIInterface):
    original_signout_post = original_implementation.signout_post

    async def signout_post(session: Optional[session.SessionContainer], api_options: APIOptions, user_context: Dict[str, Any]):
        # TODO: custom logic

        # or call the default behaviour as show below
        return await original_signout_post(session, api_options, user_context)

    original_implementation.signout_post = signout_post
    return original_implementation


init(
    app_info=InputAppInfo(
        api_domain="...", app_name="...", website_domain="..."),
    framework='...',  
    recipe_list=[
        session.init(
            override=session.InputOverrideConfig(
                apis=override_session_apis
            )
        )
    ]
)

• original_implementation is the object that contains apis that have the original implementation for this recipe. It can be used in your apis as a way to use the SuperTokens' default behaviour.
• In the above code snippet, we override the sign_out_post api of this recipe.