Better AuthBA
Better Auth•9mo ago
.jsonp

Custom values into `authClient.signIn.social()`?

Hey there 👋 What's the best way to manually set user values when signing a user in through an OAuth provider? For example, I may want to set a custom, default user image instead of using your social provider image, or I may want a custom name or username. Since I am using Next.js, intercepting the user with a layout function is pretty trivial, but maybe there is some Better-Auth way to do this through hooks or something similar?
Solution
you can actually map the value here for example 
socialProviders: {
    google: {
      clientId: "YOUR_GOOGLE_CLIENT_ID",
      clientSecret: "YOUR_GOOGLE_CLIENT_SECRET",
      mapProfileToUser: (profile) => {
        return {
          // Override default image with your custom one
          image: "https://your-domain.com/default-avatar.png",
          
          // Customize the name format
          name: `${profile.given_name} ${profile.family_name}`,
          
          // Add any additional fields you want to set
          username: profile.email.split('@')[0],
          
          // You can still access the original profile data
          // profile.picture, profile.name, etc.
        };
      }
    }
  }
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