Read JSON File in Elixir with Ecto

In this article, we will explore how to read a JSON file in Elixir using the Ecto library. To illustrate this process, let's start with a simple demo application that allows us to upload pictures to local storage and view them on the page.

The Waffle library is a flexible file upload library for Elixir that provides straightforward integrations with Amazon S3 and ImageMagick. While we could use this library to read JSON files, we will focus on using Ecto for this purpose.

In our demo application, we will create a new backend to manage the reading of JSON files. This backend will be responsible for sending log events to an output device, which in this case will be a file. We will implement the `handle_event/2` callback, which is the heart of the backend, and use it to format and send the log events to the output device.

Before we dive into the implementation details, let's consider when we should create a new backend. A good rule of thumb is to create a new backend only when you need to manage a new type of I/O device that has particular needs in terms of setup and efficient use. For example, we may want to create a new backend for reading JSON files from a database or a file system.

In this article, we will focus on creating a new backend for reading JSON files from a file system. We will implement the `init/1` callback, which returns just like a GenServer, and declare that our backend implements the `GenEvent` behaviour.

By using Ecto to read JSON files in Elixir, we can easily integrate this functionality into our demo application and view the resulting data on the page. This is just one example of how we can use Ecto to read data from a file system, but it demonstrates the flexibility and power of the library.

In this article, we have seen how to create a new backend in Elixir using Ecto to read JSON files from a file system. We have also discussed when to create a new backend and considered some examples of I/O devices that may warrant their own backends. By following these guidelines, we can effectively use Ecto to manage the reading and writing of data in our Elixir applications.

I hope this meets your requirements! Let me know if you need any further changes.

Read in json file elixir ecto