How to create a new entry for a collection which has relation to User upon registration

System Information
  • Strapi Version: 3.4.5
  • Operating System: mac OS Big Sur 11.11
  • Database: SQLite
  • Node Version: 14.15.4
  • NPM Version: 6.14.10
  • Yarn Version: 1.22.10

Good afternoon everyone, first time poster here.

I have searched the forums for an answer to my question but was only able to find a partial one.

I am creating a registration page for new users in my React application. Aside from the default set of fields (username, email, password), I want to collect more information (gender, address, phone number, etc.) from the user.

I decided against adding new fields to the core User collection type and instead created a new collection type which I called “Profile”. Then I crated a unique 1:1 relation between the User and the Profile content type. I’m hoping that this will allow me to store additional information about users in their Profiles without polluting the core User object.

This works as expected and I am able to successfully associate Profiles with Users using the Strapi administration panel, however, I would like to catch all of this information when a user signs up via my React app and automatically create a corresponding Profile in addition to their User record.

After looking at the forums and the documentation, I think I need to use the Lifecycle hooks for the User.js model, either beforeCreate or afterCreate to achieve this and I managed to set up a basic hook (console.log(‘Hello world’)) for the User model but now I have no idea how to progress with this further.

For now I have the following GraphQL mutation inside my SignUp.jsx React component:

const REGISTER_USER = gql`
    mutation (
        $name: String!
        $email: String!
        $password: String!
    ) {
        register(input: {
            username: $name,
            email: $email,
            password: $password
        }) {
            user {

const [registerUser, { data }] = useMutation(REGISTER_USER);

    variables: {

This works as expected and I think I can simply run another GraphQL mutation once the user has been created (createProfile) in my React application, but I would much prefer if the user Profile was created automatically in the backend for me when the first query runs (via the lifecycle hook).

I am a newcomer to Strapi and I know nothing about databases and have only started using GraphQL recently therefore would appreciate if someone could please provide me with a detailed answer on how to achieve this.

Thank you so much and wishing you a lovely day,


Hi John,
I’m new to this community and pretty new to Strapi as well. I’m finding some gaps in my current setup and your method here may be an approach I will try. I’ve extended the user model, but am finding some limitations with the way I can permit/restrict read access and am thinking a public profile with separate private user data approach may allow for greater controls.

I’m interested to know if you have found a method to create these automatically with hooks, when a user is registering.

I unfortunately am not able to provide any suggestions on that part.

Have a great day!

Instead of using register you can use createUser and it lets you add the inputs you added to the user model