Learn beginner to advanced level concepts of Django and master the tools necessary to build professional Django applications.

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Django

Become a Django Developer

Django is an open-source Python-based web framework that is used to create clean database-driven applications rapidly. Django makes the implementation of repetitive tasks easier.

This module teaches Django for beginner and intermediate level learners. By the end of the module, we will have created a project in Django that can be used in our portfolio.

Django: Python Web Development Unleashed

ProjectModels

React

Dart

GoJS React

Typescript React

Vue.js

## Explanation
In this challenge, we modified the already existing view `login` that we created in [Project Solution: Make a Login Form](https://www.educative.io/courses/django-python-web-development/project-solution-make-a-login-form). The form validation logic remains the same as previously discussed. We changed the code where we previously used a dictionary to fetch the user records. Instead, we are using the `auth.authenticate` function to verify the credentials. The following modifications were made:

### `zing_it/views.py` file:

- **At line #85**, we are authenticating the credentials that we fetched from the `form` by passing to the `auth.authenticate` function. This function will use the `User` model to verify credentials and return a valid `User` object if verified. Otherwise, `None` will be returned.

- **At line #87**, the line is inside of the `if` condition, meaning that the user was successfully authenticated. So, now we are using the `auth.login` function to store the logged-in state of the user. If the state is set as true for the session, then `user.is_authenticate` will also be set as true when used in templates.

### `templates/zing_it/base.html` file:
- **At line #13**, we have used the `user.is_authenticate` attribute to find if the user is logged-in in the current session. This is a better method than the previous one we were using because this state will persist. 


> **Test Yourself:** You learned how to use the `auth.login()` method in this lesson. Now, we want you to figure out how to add a logout mechanism in this application. Django has provided us a very easy way to handle logout. Feel free to discuss your solution in the Discussion forum thread ( the link can be found in the footer of the lesson).

# Explanation
In this challenge, we modified the already existing view `login` that we created in [Project Solution: Make a Login Form](https://www.educative.io/courses/django-python-web-development/project-solution-make-a-login-form). The form validation logic remains the same as previously discussed. We changed the code where we previously used a dictionary to fetch the user records. Instead, we are using the `auth.authenticate` function to verify the credentials. The following modifications were made:

## `zing_it/views.py` file:

- **At line #85**, we are authenticating the credentials that we fetched from the `form` by passing to the `auth.authenticate` function. This function will use the `User` model to verify credentials and return a valid `User` object if verified. Otherwise, `None` will be returned.

- **At line #87**, the line is inside of the `if` condition, meaning that the user was successfully authenticated. So, now we are using the `auth.login` function to store the logged-in state of the user. If the state is set as true for the session, then `user.is_authenticate` will also be set as true when used in templates.

## `templates/zing_it/base.html` file:
- **At line #13**, we have used the `user.is_authenticate` attribute to find if the user is logged-in in the current session. This is a better method than the previous one we were using because this state will persist. 


> **Test Yourself:** You learned how to use the `auth.login()` method in this lesson. Now, we want you to figure out how to add a logout mechanism in this application. Django has provided us a very easy way to handle logout. Feel free to discuss your solution in the Discussion forum thread ( the link can be found in the footer of the lesson).

Let’s take a look at the solution of authenticating users at login.

Introduction to Django

First Django Application

Templates in Django

Static Files in Django

Laying Ground for Songs Playlist Application

Project Solution: Laying Grounds for Songs Playlist Application

Django Models

Django Forms

Operations on Models

Take Your Playlist to the Next Level

Project Solution: Take Your Playlist to the Next Level

Conclusion

Project Solution: Authenticate the User at Login

Solution

Explanation