Is there a way to add some additonal params into the passwordless signiniup endpoint and then includ...

pitchash

06/09/2022, 4:56 PM

Is there a way to add some additonal params into the passwordless signiniup endpoint and then include those in the magic link url that gets sent back to the user?

rp_st

06/09/2022, 4:56 PM

Hey @pitchash

rp_st

06/09/2022, 4:57 PM

Absolutely.

rp_st

06/09/2022, 4:58 PM

So when the link is created, there is a unique preAuthSessionId that’s generated for the “login attempt”. You can save info in your db against that id. The same ID is available to you when the consume code / magic link api is called. So you can fetch the info using that ID

pitchash

06/09/2022, 5:01 PM

Actually.. what I need todo is have the frontend pass some meta data related to branding.. like a tenent.id when calling auth/signinup/code.. I then need to unclude that tenent.id in the magic link url so that if a user clicks the link from the email the frontend can then display the correct branding..

rp_st

06/09/2022, 5:02 PM

Hmm. So that’s possible as well

rp_st

06/09/2022, 5:03 PM

Since you have to send the link email yourself anyway, you can modify the link however you like (for example by adding a relevant query param to it)

rp_st

06/09/2022, 5:03 PM

And then have the frontend read the link’s query param to show the right branding

pitchash

06/09/2022, 5:04 PM

sure.. i can modify the link... how does the frontend pass extra params on the auth/signinup/code api call?

rp_st

06/09/2022, 5:04 PM

There are pre API hooks we have which alllw you to modify the request being sent

pitchash

06/09/2022, 5:04 PM

trying to find the docs..

rp_st

06/09/2022, 5:04 PM

Give me a moment

rp_st

06/09/2022, 5:05 PM

https://supertokens.com/docs/passwordless/advanced-customizations/frontend-hooks/pre-api

rp_st

06/09/2022, 5:05 PM

So you wanna modify the create_code and resend_code request

rp_st

06/09/2022, 5:06 PM

Finally, on the backend, you will have to override the create code api, read the custom attribute from the input body, and set it in the userContext object (before calling the original implementation)

rp_st

06/09/2022, 5:07 PM

The modified userContext object will then be available in the function to send the email - in which you can modify the link

pitchash

06/09/2022, 5:07 PM

yes ok think i have it

rp_st

06/09/2022, 5:07 PM

More info on userContext: https://supertokens.com/docs/passwordless/advanced-customizations/user-context

pitchash

06/09/2022, 5:09 PM

perfect thanks

pitchash

06/09/2022, 5:16 PM

Sorry one more question.. once I get the frontend hook to override the api call.. I can add additional params along with the email in the request body... which backend function / method would I need to override to extract this and ensure its added to the context?

rp_st

06/09/2022, 5:18 PM

In passwordless.init > override > apis > createCodePOST and resendCodePOST

pitchash

06/09/2022, 5:23 PM

ok.. i could get it from the options.req.body I think

rp_st

06/09/2022, 5:23 PM

Await Options.req.getJSONBody() (I think that’s the name of the function).

pitchash

06/09/2022, 5:24 PM

cool

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SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).