Interested in studying Elixir, Phoenix, and software architectures? Sign up to my publication for general musings and weekly in-depth how to’s. There are various ways to let users upload their files to our Phoenix app, including reliable libraries that deal with the uploads for us, conserving the files securely on cloud storage. However, in this tutorial we will concentrate on the foundation – we will only use the tools shipped with Phoenix, rather than third-party libraries. We shall create a fully-functional Phoenix app from scratch, running and configuring our Postgres database and Ecto schemas, managing uploads with Plug and locally keeping the files. Once we’ve done this, we’ll able to download the files. Now, let’s get to coding!
We need Node.js in our system, so the assets can be built by us inside the property index. I find now is pretty useful and easy to use if you want to handle different node versions on a single machine. If you want to compile this property just, you can download the installer of the latest version from the Node.js website.
The Phoenix application we’ve just created comes with Ecto, which helps us to deal with relational directories like PostgreSQL. A data source is essential to store details about the uploaded data files. I think that, in this full case, using Docker is easy and simple and quickest way to obtain a PostgreSQL database up and running on our local system.
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If you’re not sure how to use Docker, you can take a look at How to run a Docker Container resource, to gain an initial knowledge of how to run docker containers. Using a volume, we can demolish and recreate a box without incurring any data reduction securely. The port in the local machine is opened, and the bond is forwarded to the container port. PASSWORD to create the password postgres to the default postgres user. We mount the docker volume we’ve created before to the /var/lib/postgresql/data directory website, which is the index Postgres uses to store its data.
The name we share with the container, which we can use later to make reference to it. Stopped Once, the pot is removed automatically as the quantity is conserved. To eliminate the container, given it premiered with the –or option, we need to stop it and it’ll be removed automatically simply. C in the terminal where we started postgres.
When the pot is removed the volume is not erased. Our Postgres server is up and running Now, we have to configure the Phoenix app to connect to the database. By default, these settings fit the username, password, and hostname of our server, so we don’t need to touch it. Let’s now put in a configuration to set the absolute path of the directory, outlining where we will locally store the uploads, in cases like this for the new environment. In production, like in this case, it’s usually easier to use environment variables to pass our settings to a configuration file.