Can't able to fetch session from custom API

Shopify Apps
1

Hello

I have created product review form extension and in the frontstore user can add product reviews . For that i have created custom route in Web/index.js folder.

app.post(“/api/reviews” , async (_req, res) => {

try {
const hostname = _req.hostname;
const shopifyObj = await shopifyApi({
// The next 4 values are typically read from environment variables for added security
apiKey: process.env.SHOPIFY_API_KEY,
apiSecretKey: process.env.SHOPIFY_API_SECRET,
scopes: [‘read_products’,‘write_products’],
hostName: hostname
});
const sessionId = await shopifyObj.session.getCurrentId({
isOnline: true,
rawRequest: _req,
rawResponse: res,
});

const session = await getSessionFromStorage(sessionId);
const client = new shopify.api.clients.Graphql( { sessionId } );
await addReview(client,_req.body);
res.status(200).send(“success”);
} catch (e) {
console.log(e.message);
res.status(500).send(e.message);
}

});

But it’s showing an Error:- [shopify-api/ERROR] Missing Authorization header, was the request made with authenticatedFetch? | {isOnline: false}

Also, In your documents we can fetch session id from this function => const session = await getSessionFromStorage(sessionId);

Could you please share"getSessionFromStorage" function because i am unable to find it ?

Thank you

2

Hi @Divy_tatva

I think you misunderstood the documentation, you first need to create a custom app which authenticates using the oauth flow, this will then give you an auth token which you set as a Http header for requests using the Shopify api.

See https://shopify.dev/docs/apps/auth/oauth

1 Like
3

Hello Kat_nguyen

I have already created custom app and connected with Shopify CLI generated code. In default generated code, i think oAuth flow is already set for APIs because product create API is already working which was calling from admin APP.

In default code client is fetch by =>

const client = new shopify.api.clients.Graphql({

res.locals.shopify.session

});

Above flow is working because of calling API from Admin app, But when tried same way for my Custom route which was calling from frontstore it’s not working

4

Okay, are you using the @Shopify_77 /shopify-app-express package as it wasn’t clear from your example?

If so, have you tried:

  1. setting isOnline: false
  2. ensuring that the middleware is calling app.use(“/api/*”, shopify.validateAuthenticatedSession()); before the app.post(“/api/reviews”
5

And Also , I am using APP proxy for call frontstore API.

6

Hello Kat_nguyen

I have made above changes. Now it’s showing this errors.

  1. [shopify-api/ERROR] Missing Authorization header, was the request made with authenticatedFetch? | {isOnline: false}
  2. [shopify-app/INFO] Session was not valid. Redirecting to /api/auth?shop
7

@Divy_tatva what database are you storing your sessions in? Have you checked that the token is being saved? (Note there are 2 types of tokens, offline & online, by setting isOnline to false, you querying the database for an offline token, this should be obvious from the ID column in the database)

8

I haven’t integrate database Yet. earlier i set Isonline value is “true” but throwing same error.

9

what does your function getSessionFromStorage(sessionId) return then? This is supposed to return a valid Session? maybe try console.log and look at whats returned in your terminal.

See: https://github.com/Shopify/shopify-api-js/blob/main/docs/guides/session-storage.md

10

Also noticed you passing in a sessionId into new shopify.api.clients.Graphql( { sessionId } ), when it should be a valid { session }, thats why you called const session = await getSessionFromStorage(sessionId) on the previous line.

see: https://github.com/Shopify/shopify-api-js/blob/main/docs/reference/clients/Graphql.md

11

As i asked in my first question where i can find getSessionFromStorage function because it’s showing an error. => “getSessionFromStorage is not defined”.

But currently i am not able to fetch “sessionId” after that i can check what is value returned from that “getSessionFromStorage” function.

12

{sessionId} was bymistake added to that client.

13

I’d recommend using one of the Shopify developed Adapters https://github.com/Shopify/shopify-api-js/blob/main/docs/guides/session-storage.md

14

Can you please suggests that which library give me “getSessionFromStorage” method ?

Because i unable to found it in my cli 3 structure and also your give document doesn’t mentioned it.

1 Like
15

@Divy_tatva that would depend on what database you using to store the session, the get session method simply retrieves the session you previously stored.

For mysql see: https://github.com/Shopify/shopify-app-js/blob/db770f741e57a031fedb194efa4c947ba2039f95/packages/shopify-app-session-storage-mysql/src/mysql.ts#L89

All the supported databases are listed on the previous link I shared.

16

Hello @Van_Nguyen_GSG

Now I am able to fetch sessions using the below method.

const session = new shopify.config.sessionStorage.findSessionsByShop(shop);

Thank you