Version: 4.xx.xx

2. Create Auth Provider From Scratch

This section will show you how to create an auth provider from scratch. We'll use mock data to be able to focus on the auth provider methods. When you understand the logic of auth provider, you can easly integrate third-party authentication services or your own custom auth provider which includes many possible strategies like JWT, OAuth, etc.

Create Mock Auth Provider

Create a new file named authProvider.ts in src folder and add the following code:

src/authProvider.ts
import type { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    login: async (params: any) => ({}),
    check: async (params: any) => ({}),
    logout: async (params: any) => ({}),
    onError: async (params: any) => ({}),
};

export default authProvider;

We created a mock auth provider. It has all the required methods. But, they don't do anything. We'll add the logic to these methods in the next.

Now, we need to pass the authProvider to the <Refine/> component. Open App.tsx file and add the related code:
src/App.tsx
```
// ---
import authProvider from "./authProvider";

<Refine
    // ---
    authProvider={authProvider}
/>;
```
The authProvider is not required for the <Refine/> component. If you don't pass it, your app will work without authentication. But, you won't be able to use the auth hooks.

We created a mock auth provider and passed it to the <Refine/> component. Now, we'll add the logic to the auth provider methods.

Required Methods

login method is used to authenticate users. It expects to return a resolved Promise with the following type:

type AuthActionResponse = {
    success: boolean;
    redirectTo?: string;
    error?: Error;
    [key: string]: unknown;
};

success: Determines whether the operation is successful or not.
redirectTo: The path of the page that the user will be redirected to after the operation is completed.
error: An object containing details about any errors encountered during the operation.
[key: string]: Any additional data you wish to include in the response, keyed by a string identifier.

We'll use mock data to authenticate users. So, we'll create a mock user list and check if the user exists in the list. If the user exists, we'll save the user data to the local storage and resolve the Promise with success: true. Otherwise, we'll resolve the Promise with success: false.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const mockUsers = [{ email: "john@mail.com" }, { email: "jane@mail.com" }];

const authProvider: AuthBindings = {
    login: async ({ email, password }) => {
        // Suppose we actually send a request to the back end here.
        const user = mockUsers.find((item) => item.email === email);

        if (user) {
            localStorage.setItem("auth", JSON.stringify(user));
            return {
                success: true,
                redirectTo: "/",
            };
        }

        return {
            success: false,
            error: new Error("Invalid email or password"),
        };
    },
    // ---
};

Invoking the useLogin hook's mutation will call the login method, passing in the mutation's parameters as arguments. This means the parameters for the useLogin hook's mutation must match the parameters of the login method.

Refer to the useLogin documentation for more information →

For example, if we call the useLogin hook's mutation like this:

import { useLogin } from "@refinedev/core";

const { mutate } = useLogin();

mutate({ email: "john@mail.com", password: "123456"})

The login method will get the mutation's parameters as arguments.

At this point, we can authenticate users. But, we can't check if the user is authenticated or not when the user refreshes the page or navigates to another page. We'll add the logic to the check method to solve this problem.

Can I pass any parameters to the login method?

Yes, you can pass any parameters to the login method. useLogin hook's mutation will pass the mutation's parameters to the login method without any type constraints.

const { mutate } = useLogin<{
    username: string;
    password: string;
    foo: string;
    remember: boolean;
}>();

How can I redirect the user to a specific page after login?

If you want to redirect the user to a specific page, you can resolve the Promise with an object that has redirectTo property.

const authProvider: AuthBindings = {
    // ---
    login: async () => {
        // ---
        if (user) {
            return {
                success: true,
                redirectTo: "/custom-page",
            };
        } else {
            return {
                success: false,
                redirectTo: "/register",
            };
        }
    },
};

Also, you can use the useLogin hook's for this purpose.

const { mutate } = useLogin();

mutate({ redirectPath: "/custom-page" });

Then, you can use the redirectPath parameter in the login method to redirect the user to the specific page.

const authProvider: AuthBindings = {
    // ---
    login: async ({ redirectPath }) => {
        //---
        return {
            success: false,
            redirectTo: redirectPath,
        };
    },
};

If you don't want to redirect the user anywhere, you can resolve the login method's Promise with redirectTo: undefined.

const authProvider: AuthBindings = {
    // ---
    login: async () => {
        // ---
        return {
            success: false,
            redirectTo: undefined,
        };
    },
};

How can I customize the error message?

refine automatically displays an error notification when the login method resolves the Promise with success: false. If you want to customize the error message, you can resolve the Promise with an error object that has name and message properties.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    login: async ({ email, password }) => {
        // ---
        return {
            success: false,
            error: {
                name: "Login Failed!",
                message:
                    "The email or password that you've entered doesn't match any account.",
            },
        };
    },
    // ---
};

check

check method is used to check if the user is authenticated. Internally, it is called when the user navigates to a page that requires authentication.

check method expects to return a resolved Promise with the following type:

type CheckResponse = {
    authenticated: boolean;
    redirectTo?: string;
    logout?: boolean;
    error?: Error;
};

authenticated: A boolean value indicating whether the user is authenticated or not.
redirectTo: A string value indicating the URL to redirect to if authentication is required.
logout: A boolean value indicating whether the user should be logged out.
error: An Error object representing any errors that may have occurred during the check.

In the login method, we've saved the user data to the local storage when the user logs in. So, we'll check if the user data exists in the local storage to determine if the user is authenticated.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    // ---
    check: async () => {
        const user = localStorage.getItem("auth");

        if (user) {
            return {
                authenticated: true,
            };
        }

        return {
            authenticated: false,
            logout: true,
            redirectTo: "/login",
            error: new Error("User is not authenticated"),
        };
    },
    // ---
};

Invoking the useIsAuthenticated hook will call the check method. If check method resolves a data, it will be available in the useIsAuthenticated hook's data property.

Refer to the useIsAuthenticated documentation for more information →

import { useIsAuthenticated } from "@refinedev/core";

const { data, isSuccess, isLoading, isError, refetch } = useIsAuthenticated();

tip

The <Authenticated> component makes use of the useIsAuthenticated hook. It allows you to render components only if the user is authenticated.

Refer to the <Authenticated> documentation for more information →

How can I redirect the user if the user is not authenticated?

If you want to redirect the user to a specific page, you can resolve the Promise with an object that has redirectTo property.

const authProvider: AuthBindings = {
    // ---
    check: async () => {
        // ---
        return {
            authenticated: false,
            redirectTo: "/custom-page",
        };
    },
};

logout

logout method is used to log out users. It expects to return a resolved Promise with the following type:

type AuthActionResponse = {
    success: boolean;
    redirectTo?: string;
    error?: Error;
    [key: string]: unknown;
};

success: Determines whether the operation is successful or not.
redirectTo: The path of the page that the user will be redirected to after the operation is completed.
error: An object containing details about any errors encountered during the operation.
[key: string]: Any additional data you wish to include in the response, keyed by a string identifier.

In the login method, we've saved the user data to the local storage when the user logs in. So, we'll remove the user data from the local storage when the user logs out.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    // ---
    logout: async () => {
        localStorage.removeItem("auth");
        return {
            success: true,
            redirectTo: "/login",
        };
    },
    // ---
};

Invoking the useLogout hook's mutation will call the logout method. If you need to pass any parameters to the logout method, you can use the useLogout hook's mutation.

Refer to the useLogout documentation for more information →

For example, if we call the useLogout hook's mutation like this:

import { useLogout } from "@refinedev/core";

const { mutate } = useLogout();

mutate({ id: "1" });

The logout method will get the mutation's parameters as an argument.

Can I pass any parameters to the logout method?

Yes, you can pass any parameters to the logout method. useLogout hook's mutation will pass the mutation's parameters to the logout method without any type constraints.

const { mutate } = useLogout<{
    id: string;
    name: string;
}>();

How can I redirect the user to a specific page after logout?

If you want to redirect the user to a specific page, you can resolve the Promise with an object that has redirectTo property.

const authProvider: AuthBindings = {
    // ---
    logout: async () => {
        // ---
        return {
            success: true,
            redirectTo: "/login",
        };
    },
};

Also, you can use the useLogout hook for this purpose.

const { mutate } = useLogout();

mutate({ redirectPath: "/custom-page" });

Then, you can use the redirectPath parameter in the logout method to redirect the user to the specific page.

const authProvider: AuthBindings = {
    // ---
    logout: ({ redirectPath }) => {
        // ---
        return {
            success: true,
            redirectTo: redirectPath,
        };
    },
};

If you don't want to redirect the user to anywhere, you can resolve the logout method's Promise with redirectTo: undefined.

const authProvider: AuthBindings = {
    // ---
    logout: async () => {
        // ---
        return {
            success: true,
            redirectTo: undefined,
        };
    },
};

How can I customize the error message?

refine automatically displays an error notification when the logout method resolves the Promise with success: false. If you want to customize the error message, you can resolve the Promise with an error object that has name and message properties.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    logout: async () => {
        // ---
        return {
            success: false,
            error: {
                name: "Logout Failed!",
                message: "Something went wrong.",
            },
        };
    },
    // ---
};

onError

onError method is called when you get an error response from the API. You can create your own business logic to handle the error such as refreshing the token, logging out the user, etc.

onError method expects to return a Promise with the following type:

type OnErrorResponse = {
    redirectTo?: string;
    logout?: boolean;
    error?: Error;
};

redirectTo: If has a value, the app will be redirected to the given URL.
logout: If is true, useOnError calls the logout method.
error: An Error object representing any errors that may have occurred during the operation.

We'll use the onError method to log out the user if the API returns a 401 or 403 error. If redirectTo is set, logout method will be called with the redirectTo value.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    // ---
    onError: async (error) => {
        if (error.status === 401 || error.status === 403) {
            return {
                logout: true,
                redirectTo: "/login",
                error,
            };
        }

        return {};
    },
    // ---
};

Invoking the useOnError hook's mutation will call the onError method, passing in the mutation's parameters as arguments.

Refer to the useOnError documentation for more information →

For example, if you want to check the error of a fetch request, you can use the useOnError hook's mutation like this:

import { useOnError } from "@refinedev/core";

const { mutate } = useOnError();

fetch("http://example.com/payment")
    .then(() => console.log("Success"))
    .catch((error) => mutate(error));

How can I redirect the user to a specific page after logout?

If you want to redirect the user to a specific page, you can resolve the Promise with an object that has redirectTo property.

const authProvider: AuthBindings = {
    // ---
    onError: async (error) => {
        if (error.status === 401 || error.status === 403) {
            return {
                redirectTo: "/custom-page",
            };
        }

        return {};
    },
    // ---
};

Optional Methods

getPermissions

getPermissions method is used to get the user's permissions. It expects to return a resolved Promise.

If the Promise resolves with data, the user's permissions will be available in the usePermissions hook's data property.

We'll use the getPermissions method to get the user's permissions from the localStorage.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const mockUsers = [
    { email: "john@mail.com", roles: ["admin"] },
    { email: "jane@mail.com", roles: ["editor"] },
];

const authProvider: AuthBindings = {
    // ---
    getPermissions: () => {
        const user = localStorage.getItem("auth");

        if (user) {
            const { roles } = JSON.parse(user);

            return roles;
        }

        return null;
    },
    // ---
};

Invoking the usePermissions hook will call the getPermissions method. If getPermissions method resolves a data, it will be available in the usePermissions hook's data property.

Refer to the usePermissions documentation for more information →

For example, if you want to check if the user has a specific permission, you can use the usePermissions hook like this:

import { usePermissions } from "@refinedev/core";

const { data } = usePermissions();

if (data?.includes("admin")) {
    console.log("User has admin permissions");
}

info

usePermissions hook can be used for simply authorization purposes. If you need more complex authorization logic, we recommend using the access control provider to handle the authorization logic.

Refer to the accessControlProvider documentation for more information →

getIdentity

getIdentity method is used to get the user's identity. It expects to return a resolved Promise.

If the Promise resolves with data, the user's identity will be available in the useGetIdentity hook's data property.

We'll get the user's identity from the local storage and resolve the Promise.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const mockUsers = [
    { email: "john@mail.com", roles: ["admin"] },
    { email: "jane@mail.com", roles: ["editor"] },
];

const authProvider: AuthBindings = {
    // ---
    getIdentity: async () => {
        const user = localStorage.getItem("auth");

        if (user) {
            const { email, roles } = JSON.parse(user);

            return { email, roles };
        }

        return null;
    },
    // ---
};

Invoking the useGetIdentity hook will call the getIdentity method. If getIdentity method resolves a data, it will be available in the useGetIdentity hook's data property.

Refer to the useGetIdentity documentation for more information →

For example, if you want to get the user's email, you can use the useGetIdentity hook like this:

import { useGetIdentity } from "@refinedev/core";

const { data } = useGetIdentity();

if (data) {
    console.log(data.email);
}

info

Depending on the UI framework you use, if you resolve name and avatar properties in the getIdentity method, the user's name and avatar will be shown in the header in the default layout.

const authProvider: AuthBindings = {
    // ---
    getIdentity: async () => {
        const user = localStorage.getItem("auth");

        if (user) {
            const { email, roles } = JSON.parse(user);

            return {
                email,
                roles,
                name: "John Doe",
                avatar: "https://i.pravatar.cc/300",
            };
        }

        return null;
    },
    // ---
};

register

register method is used to register a new user. It is similar to the login method. It expects to return a resolved Promise with the following type:

type RegisterResponse = {
    success: boolean;
    redirectTo?: string;
    error?: Error;
    [key: string]: unknown;
};

success: Determines whether the operation is successful or not.
redirectTo: The path of the page that the user will be redirected to after the operation is completed.
error: An object containing details about any errors encountered during the operation.
[key: string]: Any additional data you wish to include in the response, keyed by a string identifier.

We'll register a new user and resolve the Promise.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const mockUsers = [{ email: "john@mail.com" }, { email: "jane@mail.com" }];

const authProvider: AuthBindings = {
    // ---
    register: async async ({ email }) => {
        const user = mockUsers.find((user) => user.email === email);

        if (user) {
            return {
                success: false,
                error: {
                    name: "Register Error",
                    message: "User already exists",
                },
            };
        }

        mockUsers.push({ email });

        return {
            success: true,
            redirectTo: "/login",
        };
    },
    // ---
};

Invoking the useRegister hook's mutation will call the register method, passing in the mutation's parameters as arguments.

Refer to the useRegister documentation for more information →

For example, if you want to register a new user, you can use the useRegister hook like this:

import { useRegister } from "@refinedev/core";

const { mutate } = useRegister();

const handleRegister = (values) => {
    mutate(values);
};

The register method will get the mutation's parameters as arguments.

Can I pass any parameters to the register method?

Yes, you can pass any parameters to the register method. useRegister hook's mutation will pass the mutation's parameters to the register method without any type constraints.

const { mutate } = useRegister<{
    username: string;
    email: string;
    password: string;
    confirmPassword: string;
    remember: boolean;
}>();

How can I redirect the user to a specific page after registration?

If you want to redirect the user to a specific page, you can resolve the Promise with an object that has redirectTo property.

const authProvider: AuthBindings = {
    // ---
    register: async () => {
        // ---
        return {
            success: true, // or false
            redirectTo: "/custom-page",
        };
    },
};

Also, you can use the useRegister hook's for this purpose.

const { mutate } = useRegister();

mutate({ redirectPath: "/custom-page" });

Then, you can use the redirectPath parameter in the register method to redirect the user to the specific page.

const authProvider: AuthBindings = {
    // ---
    register: async ({ redirectPath }) => {
        // ---
        return {
            success: true, // or false
            redirectTo: redirectPath,
        };
    },
};

If you don't want to redirect the user to anywhere, you can resolve the register method's Promise with redirectTo: undefined.

const authProvider: AuthBindings = {
    // ---
    register: async () => {
        // ---
        return {
            success: true, // or false
            redirectTo: undefined,
        };
    },
};

How can I customize the error message?

refine automatically displays an error notification when the register method resolves the Promise with success: false. If you want to customize the error message, you can resolve the Promise with an error object that has name and message properties.

src/authProvider.ts
const authProvider: AuthBindings = {
    // ---
    register: async () => {
        // ---
        return {
            success: false,
            error: {
                name: "Error",
                message: "Something went wrong!",
            },
        };
    },
};

forgotPassword

forgotPassword method is used to send a password reset link to the user's email address. It expects to return a resolved Promise with the following type:

type AuthActionResponse = {
    success: boolean;
    redirectTo?: string;
    error?: Error;
    [key: string]: unknown;
};

success: Determines whether the operation is successful or not.
redirectTo: The path of the page that the user will be redirected to after the operation is completed.
error: An object containing details about any errors encountered during the operation.
[key: string]: Any additional data you wish to include in the response, keyed by a string identifier.

We'll show how to send a password reset link to the user's email address and resolve the Promise.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    // ---
    forgotPassword: async ({ email }) => {
        // send password reset link to the user's email address here

        // if request is successful
        return {
            success: true,
            redirectTo: "/login",
        };

        // if request is not successful
        return {
            success: false,
            error: {
                name: "Forgot Password Error",
                message: "Email address does not exist",
            },
        };
    },
    // ---
};

Invoking the useForgotPassword hook's mutation will call the forgotPassword method, passing in the mutation's parameters as arguments.

Refer to the useForgotPassword documentation for more information →

For example, if you want to send a password reset link to the user's email address, you can use the useForgotPassword hook like this:

import { useForgotPassword } from "@refinedev/core";

const { mutate } = useForgotPassword();

const handleForgotPassword = (values) => {
    mutate(values);
};

The forgotPassword method will get the mutation's parameters as arguments.

Can I pass any parameters to the forgotPassword method?

Yes, you can pass any parameters to the forgotPassword method. useForgotPassword hook's mutation will pass the mutation's parameters to the forgotPassword method without any type constraints.

const { mutate } = useForgotPassword<{
    email: string;
}>();

How can I redirect the user to a specific page after sending the password reset link?

If you want to redirect the user to a specific page, you can resolve the forgotPassword method's Promise with the path of the page.

const authProvider: AuthBindings = {
    // ---
    forgotPassword: async () => {
        // ---
        return {
            success: true,
            redirectTo: "/login",
        };
    },
};

Also, you can use the useForgotPassword hook's for this purpose.

const { mutate } = useForgotPassword();

useForgotPassword({ redirectPath: "/custom-page" });

Then, you can use the redirectPath parameter in the forgotPassword method to redirect the user to the specific page.

const authProvider: AuthBindings = {
    // ---
    forgotPassword: async ({ redirectPath }) => {
        // ---
        return {
            success: true,
            redirectTo: redirectPath,
        };
    },
};

How can I customize the error message?

refine automatically displays an error notification when the forgotPassword method resolves the Promise with success: false. If you want to customize the error message, you can resolve the Promise with an object that has name and message properties.

src/authProvider.ts
const authProvider: AuthBindings = {
    // ---
    forgotPassword: async () => {
        // ---
        return {
            success: false,
            error: {
                name: "Error",
                message: "Something went wrong!",
            },
        };
    },
};

updatePassword

updatePassword method is used to update the user's password. It expects to return a resolved Promise with the following type:

type AuthActionResponse = {
    success: boolean;
    redirectTo?: string;
    error?: Error;
    [key: string]: unknown;
};

success: Determines whether the operation is successful or not.
redirectTo: The path of the page that the user will be redirected to after the operation is completed.
error: An object containing details about any errors encountered during the operation.
[key: string]: Any additional data you wish to include in the response, keyed by a string identifier.

We'll show how to update the user's password and resolve the Promise.

src/authProvider.ts
import { AuthBindings } from "@refinedev/core";

const authProvider: AuthBindings = {
    // ---
    updatePassword: async ({ password }) => {
        // update the user's password here

        // if request is successful
        return {
            success: true,
            redirectTo: "/login",
        };

        // if request is not successful
        return {
            success: false,
            error: {
                name: "Forgot Password Error",
                message: "Email address does not exist",
            },
        };
    },
    // ---
};

Invoking the useUpdatePassword hook's mutation will call the updatePassword method, passing in the mutation's parameters as arguments. Additionally, the updatePassword method will take query parameters as arguments from the URL as well.

Refer to the useUpdatePassword documentation for more information →

For example, if you want to update the user's password, you can use the useUpdatePassword hook like this:

import { useUpdatePassword } from "@refinedev/core";

const { mutate } = useUpdatePassword();

const handleUpdatePassword = ({ password, confirmPassword }) => {
    mutate({ password, confirmPassword }});
};

If we assume that the URL is http://localhost:3000/reset-password?token=123, the updatePassword method will get the mutation's parameters as arguments and token query parameter as well.

const authProvider: AuthBindings = {
    // ---
    updatePassword: async ({ password, confirmPassword, token }) => {
        console.log(token); // 123

        // if request is successful
        return {
            success: true,
            redirectTo: "/login",
        };
    },
};

Can I pass any parameters to the updatePassword method?

Yes, you can pass any parameters to the updatePassword method. useUpdatePassword hook's mutation will pass the mutation's parameters to the updatePassword method without any type constraints.

const { mutate } = useUpdatePassword<{
    password: string;
    newPassword: string;
}>();

How can I redirect the user to a specific page after updating the password?

If you want to redirect the user to a specific page, you can resolve the Promise with an object that has redirectTo property.

const authProvider: AuthBindings = {
    // ---
    updatePassword: async () => {
        // ---
        return {
            success: true,
            redirectTo: "/login",
        };
    },
};

Also, you can use the useUpdatePassword hook's for this purpose.

const { mutate } = useUpdatePassword();

useUpdatePassword({ redirectPath: "/custom-page" });

Then, you can use the redirectPath parameter in the updatePassword method to redirect the user to the specific page.

const authProvider: AuthBindings = {
    // ---
    updatePassword: async ({ redirectPath }) => {
        // ---
        return {
            success: true,
            redirectTo: redirectPath,
        };
    },
};

How can I customize the error message?

refine automatically displays an error notification when the updatePassword method resolves the Promise with success: false. If you want to customize the error message, you can resolve the Promise with an error object that has name and message properties.

src/authProvider.ts
const authProvider: AuthBindings = {
    // ---
    updatePassword: async () => {
        // ---
        return {
            success: false,
            error: {
                name: "Error",
                message: "Something went wrong!",
            },
        };
    },
};

Setting Authorization Credentials

After a user logs in, you can save the user's authorization credentials (such as a token) to the browser's localStorage or sessionStorage. This allows you to include the credentials in API calls by configuring the dataProvider.

Here's an example using axios and the localStorage to add a token acquired from the login method to the Authorization header of API calls.

App.tsx
// ---
import { AuthBindings } from "@refinedev/core";
import axios from "axios";

const axiosInstance = axios.create();

const mockUsers = [
    { username: "admin", token: "123" },
    { username: "editor", token: "321" },
];

const App = () => {
    const authProvider: AuthBindings = {
        login: async ({ username, password }) => {
            // Suppose we actually send a request to the back end here.
            const user = mockUsers.find((item) => item.username === username);

            if (user) {
                localStorage.setItem("auth", JSON.stringify(user));
                // This sets the authorization headers on Axios instance
                axiosInstance.defaults.headers.common = {
                    Authorization: `Bearer ${user.token}`,
                };

                return {
                    redirectTo: "/",
                    success: true,
                };
            }
            return {
                success: false,
                error: {
                    name: "Login Error",
                    message: "Username or password is incorrect",
                },
            };
        },
        // ---
    };

    return (
        <Refine
            authProvider={authProvider}
            routerProvider={routerProvider}
            // In order to use the axios instance, we need to pass it to the dataProvider
            dataProvider={dataProvider(API_URL, axiosInstance)}
        />
    );
};

note

We recommend using axios as the HTTP client with the @refinedev/simple-rest dataProvider. Other HTTP clients can also be preferred.

You can also use axios.interceptors.request.use to add the token acquired from the login method to the Authorization header of API calls. It is similar to the above example, but it is more flexible for more complex use cases such as refreshing tokens when they expire.

Refer to the axios documentation for more information about interceptors →

App.tsx
// ---
import { AuthBindings } from "@refinedev/core";
import axios, { AxiosRequestConfig } from "axios";

const axiosInstance = axios.create();

axiosInstance.interceptors.request.use((request: AxiosRequestConfig) => {
    // Retrieve the token from local storage
    const token = JSON.parse(localStorage.getItem("auth"));
    // Check if the header property exists
    if (request.headers) {
        // Set the Authorization header if it exists
        request.headers["Authorization"] = `Bearer ${token}`;
    } else {
        // Create the headers property if it does not exist
        request.headers = {
            Authorization: `Bearer ${token}`,
        };
    }

    return request;
});

const mockUsers = [
    { username: "admin", token: "123" },
    { username: "editor", token: "321" },
];

const App = () => {
    const authProvider: AuthBindings = {
        login: async ({ username, password }) => {
            // Suppose we actually send a request to the back end here.
            const user = mockUsers.find((item) => item.username === username);

            if (user) {
                localStorage.setItem("auth", JSON.stringify(user));
                return {
                    redirectTo: "/",
                    success: true,
                };
            }
            return {
                success: false,
                error: {
                    name: "Login Error",
                    message: "Username or password is incorrect",
                },
            };
        },
        // ---
    };

    return (
        <Refine
            authProvider={authProvider}
            routerProvider={routerProvider}
            dataProvider={dataProvider(API_URL, axiosInstance)}
        >
            {/* ... */}
        </Refine>
    );
};

Checklist

I understood how to create a auth provider.

Create Mock Auth Provider​

Required Methods​

login​

check​

logout​

onError​

Optional Methods​

getPermissions​

getIdentity​

register​

forgotPassword​

updatePassword​

Setting Authorization Credentials​

Checklist

Create Mock Auth Provider

Required Methods

login

check

logout

onError

Optional Methods

getPermissions

getIdentity

register

forgotPassword

updatePassword

Setting Authorization Credentials