Wasp•2mo ago

How can i avoid that a user can "signup" twice with the same email address in wasp version 0.11.8?

At the moment, it's possible for users to sign up with the same email address and still get this confirmation message on the signup page: You've signed up successfully! Check your email for the confirmation link. In the database, nothing changes if the email address already exists but how can I check upfront as part of the sign up process if the email address already exists? How can I customize the signup validation for wasp version 0.11.8

5 Replies

kapa.ai•2mo ago

Hi @john. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To address your question about preventing duplicate signups with the same email address in Wasp version 0.11.8, I can provide some insights based on the available information. In Wasp, the default behavior for signup actually includes some built-in protections against duplicate email addresses. According to the Auth documentation (https://wasp-lang.dev/docs/auth/email#signup), Wasp implements the following behavior: 1. If someone tries to signup with an email that already exists and is verified, Wasp pretends that the account was created instead of saying it's an existing account. This is done to prevent leaking the user's email address. 2. If a user tries to register with an existing but unverified email, Wasp allows them to do that. This is to prevent bad actors from locking out other users from registering with their email address. However, if you want to customize this behavior for your specific needs in version 0.11.8, you can create a custom signup action. Here's how you can do that: 1. Create a custom signup action file, typically in src/auth/signup.js or src/auth/signup.ts. 2. In this file, you can implement custom logic to check if the email already exists before creating a new user. Here's a simplified example based on the custom signup action documentation (https://wasp-lang.dev/docs/auth/email#creating-a-custom-sign-up-action):

import {
  ensureValidEmail,
  ensurePasswordIsPresent,
  ensureValidPassword,
  createProviderId,
  findAuthIdentity,
  createUser,
  sanitizeAndSerializeProviderData,
} from 'wasp/server/auth'

export const signup = async (args, _context) => {
  ensureValidEmail(args)
  ensurePasswordIsPresent(args)
  ensureValidPassword(args)

  try {
    const providerId = createProviderId('email', args.email)
    const existingAuthIdentity = await findAuthIdentity(providerId)
if (existingAuthIdentity) {
      // Email already exists, throw an error or handle as needed
      throw new Error('Email already in use')
    } else {
      // Create new user
      const newUserProviderData = await sanitizeAndSerializeProviderData({
        hashedPassword: args.password,
        isEmailVerified: false,
        emailVerificationSentAt: null,
        passwordResetSentAt: null,
      })
      await createUser(
        providerId,
        newUserProviderData,
        // Any additional data you want to store on the User entity
        {},
      )
      // Return success message or handle as needed
      return { success: true, message: 'User created successfully' }
    }
  } catch (error) {
    // Handle errors
    return { success: false, message: error.message }
  }
}

import {
  ensureValidEmail,
  ensurePasswordIsPresent,
  ensureValidPassword,
  createProviderId,
  findAuthIdentity,
  createUser,
  sanitizeAndSerializeProviderData,
} from 'wasp/server/auth'

export const signup = async (args, _context) => {
  ensureValidEmail(args)
  ensurePasswordIsPresent(args)
  ensureValidPassword(args)

  try {
    const providerId = createProviderId('email', args.email)
    const existingAuthIdentity = await findAuthIdentity(providerId)
if (existingAuthIdentity) {
      // Email already exists, throw an error or handle as needed
      throw new Error('Email already in use')
    } else {
      // Create new user
      const newUserProviderData = await sanitizeAndSerializeProviderData({
        hashedPassword: args.password,
        isEmailVerified: false,
        emailVerificationSentAt: null,
        passwordResetSentAt: null,
      })
      await createUser(
        providerId,
        newUserProviderData,
        // Any additional data you want to store on the User entity
        {},
      )
      // Return success message or handle as needed
      return { success: true, message: 'User created successfully' }
    }
  } catch (error) {
    // Handle errors
    return { success: false, message: error.message }
  }
}

This custom signup action checks if the email already exists using findAuthIdentity. If it does, it throws an error. If not, it creates a new user. Remember to update your Wasp file to use this custom signup action. You'll need to add a signup field to your auth configuration, pointing to this custom action. Please note that this is a simplified example and you might want to add more error handling and security considerations in a production environment. Also, be aware that explicitly stating whether an email exists can potentially be a security risk, as it allows malicious actors to enumerate valid email addresses. The default Wasp behavior of pretending the signup was successful is a security measure to prevent this. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @john, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

johnOP•2mo ago

@kapa.ai above provided link for documentation is for version 0.15.0

kapa.ai•2mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- You're absolutely correct, and I apologize for the oversight. Thank you for pointing that out. You're right that the documentation I referenced earlier is indeed for a newer version of Wasp (0.15.0), which is not applicable to your specific situation with Wasp version 0.11.8. Unfortunately, I don't have specific information about the exact implementation details for version 0.11.8 in the provided knowledge sources. The authentication mechanisms and APIs might have changed between these versions. For the most accurate and version-specific information about customizing signup validation in Wasp 0.11.8, I would recommend: 1. Checking the documentation that came with your 0.11.8 installation. 2. Reaching out to the Wasp community or maintainers directly, as they would have the most accurate information about that specific version. 3. If possible, considering an upgrade to a more recent version of Wasp, which might provide more robust built-in features for handling duplicate signups. I apologize that I can't provide more specific guidance for version 0.11.8. If you have any other questions about Wasp that I might be able to help with based on the information available to me, please feel free to ask. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @john, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Vinny (@Wasp)•2mo ago

@john I believe you'd have to import prisma within the signup function that you define here https://wasp-lang.dev/docs/0.11.8/auth/overview#1-defining-extra-fields and check if the user already exists, and if so, throw an error

martinsos•2mo ago

@john that is actually a feature! FIrst, they can't signup multipel times -> they will get that message, but no email. WHy is that. Beacuse if you got message like "that email is taken", than you can use that to learn if somebody with that email is signed up on the app, you can test different emails and see who has accounts. What do you find problematic with this behaviour?

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How can i avoid that a user can "signup" twice with the same email address in wasp version 0.11.8?