Preparando la App para implementar el Login y Sign up

How to implement the security layer in your application?

Imagine that you have worked hard to develop an application, and suddenly you realize that it is exposed to security vulnerabilities. Implementing a robust security layer is critical to protect both users and the data you handle. Let's explore how to configure this security layer so that all authentication and authorization execution works efficiently.

Where to look for authorization errors?

To start, you need to identify errors that arise when trying to access protected services without being authenticated. These steps will help you:

1. "Network" screen: When navigating in your application, use the browser's "Network" tab. Here you can view all network requests and their status. Look for any request that appears in red.

2. Console: Most browsers have a console that displays real-time execution errors. Look for messages related to missing authorization headers.

3. Pre-request token: Make sure you have a flow to request and send the token needed for authorization on requests to your backend.

How to model credentials.

To effectively implement login and registration, we must create a credential model that ensures that the data will be properly validated before being sent:

class Credential: email: str password: str confirmPassword: str = None # Optional, only for registration.

This model is a blueprint that ensures that the data required for authentication and registration are present and correct.

How to configure the authentication service?

To interact with your backend and manage authentications, it is necessary to create services in your application that will handle login and registration requests:

1. Initial setup: define a new service called AuthenticationService that will perform the authentication tasks.

2. Implementation in code:

   • Copy the existing service for other functionality and rename it.
   • Implement the login and signUp methods using the credential models as parameters.

class AuthenticationService: def login(self, credential: Credential): # Implement login logic here
 def signUp(self, credential: Credential): # Implement signup logic here

How to create a login interface?

Designing a friendly user interface is as crucial as the backend logic. You must make sure that the screen is intuitive:

1. HTML form: Create a form in your HTML with input fields for email and password, and a submit button.

2. Link to credentials: Make sure that the data entered in the form is correctly linked to the attributes of your Credential model.

3. Style and usability: Make sure the form is properly styled to have a clean and professional format.

<form> <ion-item> <ion-input [(ngModel)]="credential.email" placeholder="Email" type="email"></ion-input> </ion-item> <ion-item> <ion-input [(ngModel)]="credential.password" placeholder="Password" type="password"></ion-input> </ion-item> <ion-button (click)="login()">Login</ion-button></form></form>

How to display the registration form?

Prepare a comparable form for registration using a similar methodology, but be sure to ask for password confirmation to improve security and user experience.

<form> <ion-item> <ion-input [(ngModel)]="credential.email" placeholder="Email" type="email"></ion-input> </ion-item> <ion-item><ion-item> <ion-input [(ngModel)]="credential.password" placeholder="Password" type="password"></ion-input> </ion-item> <ion-item> <ion-input [(ngModel)]="credential.confirmPassword" placeholder="Confirm Password" type="password"></ion-input> </ion-item> <ion-button (click)="signUp()">Signup</ion-button></form>

In summary, the correct implementation of security layers and services not only protects data integrity but also strengthens users' trust towards your application. If you follow these steps, you will be well on your way to ensuring that credentials are managed securely and efficiently. Go ahead and feel free to refine and expand your knowledge of security and web development!