Creating Simple Login Page with AdonisJs 2023

To create a login page with Adonis.js, you will need to follow these steps:

1. Set up your Adonis.js application using the adonis new command.

2. Install the necessary dependencies, including the adonis-auth package, which provides authentication functionality for Adonis.js applications.

3. Define a route for your login page in the start/routes.js file. This route should render a view containing a login form.

4. Create a login form in a view template using the Form component provided by Adonis.js. This form should include fields for the user's email address and password.

5. In your route handler, use the Auth module provided by the adonis-auth package to authenticate the user's credentials and log them in.

6. If the login is successful, redirect the user to the protected page that they are trying to access. If the login fails, display an error message to the user.

7. Add a logout link to your protected page, which allows the user to log out of their account. This should also use the Auth module to invalidate the user's session and log them out.

Creating a login page with Adonis.js involves setting up your application, defining routes and views, and using the adonis-auth package to handle authentication.

First, set up your Adonis.js application and install the necessary dependencies:

adonis new my-app
cd my-app
npm install --save adonis-auth

Next, define a route for your login page in the start/routes.js file:

Route.get('/login', 'AuthController.login')

Then, create a login.njk view template containing a login form:

<form method="POST" action="/login">
  <label>
    Email:
    <input type="email" name="email" />
  </label>
  <label>
    Password:
    <input type="password" name="password" />
  </label>
  <button type="submit">Log in</button>
</form>

In the AuthController, you can then use the Auth module to authenticate the user's credentials and log them in:

const Auth = use('Adonis/Auth')

class AuthController {
  async login({ request, response, auth }) {
    const { email, password } = request.all()
    try {
      await auth.attempt(email, password)
      return response.redirect('/protected')
    } catch (error) {
      // Login failed, display an error message
    }
  }
}

Finally, on your protected page, you can add a logout link that uses the Auth module to invalidate the user's session and log them out:

<a href="/logout">Log out</a>

// In your routes file:
Route.get('/logout', 'AuthController.logout')

// In your controller:
class AuthController {
  async logout({ auth, response }) {
    await auth.logout()
    return response.redirect('/')
  }
}

This is a basic example of how you can implement a login page with Adonis.js. You can customize and extend this example to fit the specific needs of your application.