Deploying Django Applications: Heroku

Heroku is a popular cloud-based Platform-as-a-Service (PaaS) that provides developers with an easy way to deploy, manage, and scale their applications. In this blog post, we will explore how to deploy a Django application on Heroku.

Prerequisites

Before we begin, you will need the following:

• A basic understanding of Django development
• A Heroku account (sign up at https://www.heroku.com)
• The Heroku CLI (command-line interface) installed on your machine

Step 1: Setup

1. Create a new directory for your Django project.
2. Initialize a new Git repository by running git init.
3. Create a new virtual environment by running python -m venv venv.
4. Activate the virtual environment by running source venv/bin/activate on macOS/Linux or venv\Scripts\activate on Windows.
5. Install Django and other dependencies by running pip install django.

Step 2: Create a Django App

1. Create a new Django app by running django-admin startproject myproject (replace myproject with the name of your project).
2. Change to the project directory by running cd myproject.
3. Create a new Django app within the project by running python manage.py startapp myapp (replace myapp with the name of your app).

Step 3: Configure the Django App

1. Open the settings.py file in your project folder.
2. Update the DATABASES settings to use a Heroku Postgres database (you can provision it through the Heroku dashboard).
3. Set the ALLOWED_HOSTS setting to ['*'] to allow Heroku to access your app.
4. Install the gunicorn package by running pip install gunicorn.
5. Create a new file called Procfile in the project root directory with the following content: web: gunicorn myproject.wsgi.
6. Create a new file called runtime.txt in the project root directory and specify the Python version you are using (e.g., python-3.9.6).

Step 4: Initialize Git and Deploy to Heroku

1. Run git add . to add all the files to your Git repository.
2. Commit the changes by running git commit -m "Initial commit".
3. Login to Heroku from the command line by running heroku login.
4. Create a new Heroku app by running heroku create.
5. Set the Heroku remote as the Git repository's remote by running heroku git:remote -a your-app-name (replace your-app-name with the name of your Heroku app).
6. Push your code to the Heroku remote by running git push heroku main.
7. Run the migrations on the Heroku server by running heroku run python manage.py migrate.
8. Open your app in the browser by running heroku open.

Conclusion

By following the above steps, you should now have your Django application deployed and running on Heroku. You can continue to add features and make changes to your app and deploy them using the same Git workflow. Heroku also provides additional tools and services to manage and scale your application as needed. Happy coding!

本文来自极简博客，作者：技术解码器，转载请注明原文链接：Deploying Django Applications: Heroku