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Building a Django project¶
This example will show how to create a simple Django project using vagga.
Creating the project structure¶
In order to create the initial project structure, we will need a container with Django installed. First, let’s create a directory for our project:
Now create the vagga.yaml file and add the following to it:
This will create a project named MyProject in the current directory. It will look like:
Notice that we used 'Django >=1.9, instead of just Django . It is a good practice to always specify the major and minor versions of a dependency. This prevents an update to an incompatible version of a library breaking you project. You can change the Django version if there is a newer version available ( 'Django >=1.10, for instance).
Freezing dependencies¶
It is a common practice for python projects to have a requirements.txt file that will hold the exact versions of the project dependencies. This way, any developer working on the project will have the same dependencies.
In order to generate the requirements.txt file, we will create another container called app-freezer , which will list our project’s dependencies and output the requirements file.
вќ¶ – our new container вќ· – we need pip available to freeze dependencies вќё – generate the requirements file вќ№ – just reference the requirements file from django container.
Every time we add a new dependency, we need to rebuild the app-freezer container to generate the updated requirements.txt .
Now, build the app-freezer container:
You will notice the new requirements.txt file holding a content similar to:
And now let’s run our project. Edit vagga.yaml to add the run command:
If everything went right, visiting localhost:8000 will display Django’s welcome page saying ‘It worked!’.
Let’s add a dependencyВ¶
By default, Django is configured to use sqlite as its database, but we want to use a database url from an environment variable, since it’s more flexible. However, Django does not understand database urls, so we need dj-database-url to convert the database url into what Django understand.
Add dj-database-url to our app-freezer container:
Rebuild the app-freezer container to update requirements.txt :
Set the environment variable:
вќ¶ – will point to /work/db.sqlite3.
Now let’s change our project’s settings by editing MyProject/settings.py :
Let’s another shortcut command for manage.py :
This command accept arguments by default, so instead of writing it long vagga _run django python3 manage.py runserver we will be able to shorten it to vagga manage.py runserver.
To see if it worked, let’s run the migrations from the default Django apps and create a superuser:
After creating the superuser, run our project:
visit localhost:8000/admin and log into the Django admin.
Adding some code¶
Before going any further, let’s add a simple app to our project.

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