Gain insights into Django, a Python framework for rapid web development. Discover hands-on learning with interactive widgets and build a portfolio-worthy Django project.

django-docker.tar.gz

Django

Project

Models

ProjectModels

ProjectModels-challenge 1

ProjectModels-challenge 2

Django is a free and open-source web application framework written in Python. It is used for rapid web development and clean, pragmatic design. It is built by experienced developers to make repetitive tasks easier, so you can focus on writing apps instead of reinventing the wheel. This course teaches Django for beginning and intermediate level learners. The course includes a hands-on learning experience with the help of interactive widgets. At the end of the course, you will have created a project in Django that can be used in your portfolio.

Django: Python Web Development Unleashed

React

Dart

GoJS React

Typescript React

Vue.js

# Explanation
We made the following modifications to the project in order to implement the updating feature:
## `zing_it/forms.py` file

- **At lines #18 to #23**, we made an `Edit` form. This form is a `ModelForm` corresponding to the `Song` model. We discussed model forms previously in the [Model Form](https://www.educative.io/courses/django-python-web-development/model-form) lesson.

## `zing_it/urls.py` file

- **At line #10**, we defined a path for our `edit` view function with a dynamic rule. We can recall this concept from the lesson [Static and Dynamic Routing](https://www.educative.io/courses/django-python-web-development/static-and-dynamic-routing). The rule `/edit/<int:id>` will correspond with `/edit/` followed by an integer. We are considering the integer value to be the `id` of a `Song` instance.

## `zing_it/views.py` file

- **At line #90**, we created a view function called `edit` that takes in an `id` parameter. The `id` corresponds to the `id` of `Song` in the database.

- **At lines #91 to 92**, we are creating an `Edit` form instance by using the form obtained in `request`. If we did not receive a form in `request`, then the condition on **line 92** will return false, and **line 111** will be executed where a new form will be sent to the template. This condition can occur in two cases, firstly when the server receives a `GET` request, and secondly if the validation fails in the form fields.

- **At lines #93 to #97**, we retrieved the data from the `Edit` form fields.

- **At line #99**, we are retrieving the song record from the database that needs to be updated. We have used the `get()` function for the retrieval.

- **At lines #101 to #107**, we are updating the `song` object with the values obtained from the `form` and saving the new information.


## `templates/zing_it/edit.html` file

- This template is almost identical to  `signup.html`.


> **Note:** This was the last challenge in this course. However, the project is still incomplete. This project is a good starting point for you to use and build upon. You can create a full-fledged website with the skills that you now have in your arsenal. Feel free to download the code and play with it more!

Let's review the solution for how to update songs in the database.

Before Getting Started

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: Updating Songs

Solution

Explanation

`zing_it/forms.py` file

`zing_it/urls.py` file