Which frontend SDK do you use?

supertokens-web-js / mobile

supertokens-auth-react

Get User Info

You can fetch user information on the backend as well as on the frontend.

Fetching on the backend

Using getUserByEmail

NodeJS

You can get a user's information on the backend using the getUserByEmail and getUserById functions:

import EmailPassword from "supertokens-node/recipe/emailpassword";

async function getUserInfo() {
    // Note that usersInfo has type User[]
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let usersInfo = await EmailPassword.getUserByEmail("test@example.com");
}

GoLang

You can get a user's information on the backend using the GetUserByEmail and GetUserById functions:

import (
    "fmt"

    "github.com/supertokens/supertokens-golang/recipe/emailpassword"
)

func main() {

    // Note that usersInfo has type User[]
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    usersInfo, err := emailpassword.GetUserByEmail("test@example.com")
    if err != nil {
        // TODO: Handle error
        return
    }
    fmt.Println(usersInfo)
    //...
}

Python

Asyncio

from supertokens_python.recipe.emailpassword.asyncio import get_user_by_email

async def some_func():
    # Note that users_info has type List[User]
    _ = await get_user_by_email("test@example.com")

Syncio

from supertokens_python.recipe.emailpassword.syncio import get_user_by_email

# Note that users_info has type List[User]
# You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki 
users_info = get_user_by_email("test@example.com")

Using getUserById

NodeJS

Express

import express from "express";
import EmailPassword from "supertokens-node/recipe/emailpassword";
import { verifySession } from "supertokens-node/recipe/session/framework/express";
import { SessionRequest } from 'supertokens-node/framework/express';

let app = express();
app.get("/get-user-info", verifySession(), async (req: SessionRequest, res) => {
    let userId = req.session!.getUserId();
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let userInfo = await EmailPassword.getUserById(userId)
    // ... 
})

Hapi

import EmailPassword from "supertokens-node/recipe/emailpassword";
import { verifySession } from "supertokens-node/recipe/session/framework/hapi";
import Hapi from "@hapi/hapi";
import { SessionRequest } from "supertokens-node/framework/hapi";

let server = Hapi.server({ port: 8000 });

server.route({
    path: "/get-user-info",
    method: "get",
    options: {
        pre: [
            {
                method: verifySession()
            },
        ],
    },
    handler: async (req: SessionRequest, res) => {
        let userId = req.session!.getUserId();
        // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
        let userInfo = await EmailPassword.getUserById(userId);
        //...
    }
})

Fastify

import Fastify from "fastify";
import EmailPassword from "supertokens-node/recipe/emailpassword";
import { verifySession } from "supertokens-node/recipe/session/framework/fastify";
import { SessionRequest } from 'supertokens-node/framework/fastify';

const fastify = Fastify();

fastify.post("/like-comment", {
    preHandler: verifySession(),
}, async (req: SessionRequest, res) => {
    let userId = req.session!.getUserId();
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let userInfo = await EmailPassword.getUserById(userId);
    //....
});

Koa

import EmailPassword from "supertokens-node/recipe/emailpassword";
import { verifySession } from "supertokens-node/recipe/session/framework/awsLambda";
import { SessionEvent } from "supertokens-node/framework/awsLambda";

async function getUserInfo(awsEvent: SessionEvent) {
    let userId = awsEvent.session!.getUserId();
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let userInfo = await EmailPassword.getUserById(userId);
    //....
};

exports.handler = verifySession(getUserInfo);

Loopback

import KoaRouter from "koa-router";
import EmailPassword from "supertokens-node/recipe/emailpassword";
import { verifySession } from "supertokens-node/recipe/session/framework/koa";
import { SessionContext } from "supertokens-node/framework/koa";

let router = new KoaRouter();

router.get("/get-user-info", verifySession(), async (ctx: SessionContext, next) => {
    let userId = ctx.session!.getUserId();
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let userInfo = await EmailPassword.getUserById(userId);
    //....
});

AWS Lambda / Netlify

import { inject, intercept } from "@loopback/core";
import { RestBindings, MiddlewareContext, get, response } from "@loopback/rest";
import  EmailPassword from "supertokens-node/recipe/emailpassword";
import { verifySession } from "supertokens-node/recipe/session/framework/loopback";
import Session from "supertokens-node/recipe/session";
import { SessionContext } from "supertokens-node/framework/loopback";

class GetUserInfo {
    constructor(@inject(RestBindings.Http.CONTEXT) private ctx: MiddlewareContext) {}
    @get("/get-user-info")
    @intercept(verifySession())
    @response(200)
    async handler() {
        let userId = ((this.ctx as any).session as Session.SessionContainer).getUserId();
        // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
        let userInfo = await EmailPassword.getUserById(userId);
        //....
    }
}

Next.js

import EmailPassword from "supertokens-node/recipe/emailpassword";
import { superTokensNextWrapper } from 'supertokens-node/nextjs'
import { verifySession } from "supertokens-node/recipe/session/framework/express";
import { SessionRequest } from "supertokens-node/framework/express";

export default async function likeComment(req: SessionRequest, res: any) {
    await superTokensNextWrapper(
        async (next) => {
            await verifySession()(req, res, next);
        },
        req,
        res
    )

    let userId = req.session!.getUserId();
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let userInfo = await EmailPassword.getUserById(userId);
    //....
}

NestJS

import { Controller, Post, UseGuards, Request, Response } from "@nestjs/common";
import { AuthGuard } from './auth/auth.guard';
import { Session } from './auth/session.decorator';
import EmailPassword from "supertokens-node/recipe/emailpassword";
import { SessionRequest } from "supertokens-node/framework/express";

@Controller()
export class ExampleController {
  @Post('example')
  @UseGuards(new AuthGuard()) // For more information about this guard please read our NestJS guide.
  async postExample(@Request() req: SessionRequest, @Session() session: Session, @Response({passthrough: true}) res: Response): Promise<boolean> {
    let userId = session.getUserId();
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    let userInfo = await EmailPassword.getUserById(userId); 
    //....
    return true;
  }
}

GoLang

Chi

import (
    "fmt"
    "net/http"

    "github.com/supertokens/supertokens-golang/recipe/session"
    "github.com/supertokens/supertokens-golang/recipe/emailpassword"
)

func main() {
    _ = http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
        session.VerifySession(nil, getUserInfoAPI).ServeHTTP(rw, r)
    })
}

func getUserInfoAPI(w http.ResponseWriter, r *http.Request) {
    sessionContainer := session.GetSessionFromRequestContext(r.Context())

    userID := sessionContainer.GetUserID()
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    userInfo, err := emailpassword.GetUserByID(userID)
    if err != nil {
        // TODO: Handle error
        return
    }
    fmt.Println(userInfo)
}

net/http

import (
    "fmt"
    "net/http"

    "github.com/gin-gonic/gin"
    "github.com/supertokens/supertokens-golang/recipe/session"
    "github.com/supertokens/supertokens-golang/recipe/session/sessmodels"
    "github.com/supertokens/supertokens-golang/recipe/emailpassword"
)

func main() {
    router := gin.New()
    router.GET("/getuserinfo", verifySession(nil), getUserInfoAPI)
}

func verifySession(options *sessmodels.VerifySessionOptions) gin.HandlerFunc {
    return func(c *gin.Context) {
        session.VerifySession(options, func(rw http.ResponseWriter, r *http.Request) {
            c.Request = c.Request.WithContext(r.Context())
            c.Next()
        })(c.Writer, c.Request)
        // we call Abort so that the next handler in the chain is not called, unless we call Next explicitly
        c.Abort()
    }
}

func getUserInfoAPI(c *gin.Context) {
    sessionContainer := session.GetSessionFromRequestContext(c.Request.Context())

    userID := sessionContainer.GetUserID()

    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    userInfo, err := emailpassword.GetUserByID(userID)
    if err != nil {
        // TODO: Handle error
        return
    }
    fmt.Println(userInfo)
    //...
}

Gin

import (
    "fmt"
    "net/http"

    "github.com/go-chi/chi"
    "github.com/supertokens/supertokens-golang/recipe/session"
    "github.com/supertokens/supertokens-golang/recipe/emailpassword"
)

func main() {
    r := chi.NewRouter()
    r.Get("/getuserinfo", session.VerifySession(nil, getUserInfoAPI))
}

func getUserInfoAPI(w http.ResponseWriter, r *http.Request) {
    sessionContainer := session.GetSessionFromRequestContext(r.Context())

    userID := sessionContainer.GetUserID()
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    userInfo, err := emailpassword.GetUserByID(userID)
    if err != nil {
        // TODO: Handle error
        return
    }
    fmt.Println(userInfo)
}

Mux

import (
    "fmt"
    "net/http"

    "github.com/gorilla/mux"
    "github.com/supertokens/supertokens-golang/recipe/session"
    "github.com/supertokens/supertokens-golang/recipe/emailpassword"
)

func main() {
    router := mux.NewRouter()
    router.HandleFunc("/getuserinfo", session.VerifySession(nil, getUserInfoAPI)).Methods(http.MethodGet)
}

func getUserInfoAPI(w http.ResponseWriter, r *http.Request) {
    sessionContainer := session.GetSessionFromRequestContext(r.Context())

    userID := sessionContainer.GetUserID()
    // You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    userInfo, err := emailpassword.GetUserByID(userID)
    if err != nil {
        // TODO: Handle error
        return
    }
    fmt.Println(userInfo)
}

Python

FastAPI

from supertokens_python.recipe.session.framework.fastapi import verify_session
from supertokens_python.recipe.emailpassword.asyncio import get_user_by_id
from supertokens_python.recipe.session import SessionContainer
from fastapi import FastAPI, Depends

app = FastAPI()

@app.post('/get_user_info_api') 
async def get_user_info_api(session: SessionContainer = Depends(verify_session())):
    user_id = session.get_user_id()

    # You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    _ = await get_user_by_id(user_id)

Flask

from supertokens_python.recipe.session.framework.flask import verify_session
from supertokens_python.recipe.emailpassword.syncio import get_user_by_id
from flask import Flask, g
from supertokens_python.recipe.session import SessionContainer

app = Flask(__name__)

@app.route('/update-jwt', methods=['POST']) 
@verify_session()
def get_user_info_api():
    session: SessionContainer = g.supertokens 

    user_id = session.get_user_id()

    # You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    _ = get_user_by_id(user_id)

Django

from supertokens_python.recipe.session.framework.django.asyncio import verify_session
from supertokens_python.recipe.emailpassword.asyncio import get_user_by_id
from django.http import HttpRequest
from supertokens_python.recipe.session import SessionContainer

@verify_session()
async def get_user_info_api(request: HttpRequest):
    session: SessionContainer = request.supertokens 

    user_id = session.get_user_id()

    # You can learn more about the `User` object over here https://github.com/supertokens/core-driver-interface/wiki
    _ = await get_user_by_id(user_id)

Fetching on the frontend

important

The function calls below require no API calls and read directly from the session information stored on the frontend. This makes them very quick.

ReactJS

With React Context

import React from "react";
import { useSessionContext } from 'supertokens-auth-react/recipe/session'; 

// Your dashboard component
function Dashboard(props: any) {
    let session = useSessionContext();

    if (session.loading) {
        return null;
    }

    let {doesSessionExist, userId, accessTokenPayload} = session;

    // doesSessionExist will always be true if this is wrapped in `<SessionAuth>`
    if (!doesSessionExist) {
        // TODO
    }

    let name = accessTokenPayload.userName;
}

Without React Context

import Session from 'supertokens-auth-react/recipe/session';

async function getUserInfo() {
      if (await Session.doesSessionExist()) {
            let userId = await Session.getUserId();
            let accessTokenPayload = await Session.getAccessTokenPayloadSecurely();
      }
}

Angular

Via NPM

import Session from 'supertokens-web-js/recipe/session';

async function getUserInfo() {
      if (await Session.doesSessionExist()) {
            let userId = await Session.getUserId();
            let accessTokenPayload = await Session.getAccessTokenPayloadSecurely();
      }
}

Via Script Tag

async function getUserInfo() {
      if (await supertokensSession.doesSessionExist()) {
            let userId = await supertokensSession.getUserId();
            let accessTokenPayload = await supertokensSession.getAccessTokenPayloadSecurely();
      }
}

Vue

import SuperTokens from 'supertokens-react-native';

async function getUserInfo() {
      if (await SuperTokens.doesSessionExist()) {
            let userId = await SuperTokens.getUserId();
            let accessTokenPayload = await SuperTokens.getAccessTokenPayloadSecurely();
      }
}

Plain JavaScript

import Session from 'supertokens-web-js/recipe/session';

async function getUserInfo() {
      if (await Session.doesSessionExist()) {
            let userId = await Session.getUserId();
            let accessTokenPayload = await Session.getAccessTokenPayloadSecurely();
      }
}

React Native

import Session from 'supertokens-web-js/recipe/session';

async function getUserInfo() {
      if (await Session.doesSessionExist()) {
            let userId = await Session.getUserId();
            let accessTokenPayload = await Session.getAccessTokenPayloadSecurely();
      }
}