elixir

19 Articles
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Listen to Database Changes with Postgres Triggers and Elixir

Postgres Notifications allow you to subscribe to any changes in your database, even if they weren't made by your Elixir application! Let's learn how to set them up!

– 11 min read
postgres elixir
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Build dynamic Forms with JSON Schemas

Define custom forms without writing a single line of HTML. JSON Schemas help you define and adjust forms and validate user input all through a single configuration file.

– 13 min read
elixir liveview
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Build a Roles and Permissions System for Phoenix - Part 2

Learn how to prevent PII leaks from your Ecto queries by adding query restrictions to your Roles and Permissions system.

– 18 min read
rap elixir
A phoenix rising from a computer screen

Build a Roles and Permissions System for Phoenix - Part 1

Learn how to control access to your system by assigning granular roles and permissions to your users.

– 18 min read
rap elixir
A developer holding a mug of coffee with shaky hands staring at a computer

Simulate Latency, Jitter, and Package Loss in Phoenix LiveView

Learn how to make your LiveView app more resilient by simulating bad internet connections.

– 6 min read
liveview elixir
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The Complete Guide to Full-text Search with Postgres and Ecto

A detailed deep-dive into efficient full-text search for multiple languages, result ranking, tsvectors and tsqueries, search modifiers, and so much more.

– 28 min read
ecto elixir
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Efficient Name Search with Postgres and Ecto

Search through millions of strings efficiently using indexed ILIKE or SIMILARITY queries.

– 19 min read
ecto elixir
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Prevent overlapping time ranges with Ecto and Postgres

Block overlapping appointments efficiently in your database using exclusion constraints and don't worry about double-bookings ever again!

– 12 min read
ecto elixir
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Optimize Ecto's insert_all with Placeholders

Write more efficient bulk insert queries and avoid sending duplicate data by using placeholders.

– 6 min read
ecto elixir
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The complete guide to Upserts with Ecto

Implement insert-or-update functionality for your schemas directly with Ecto's on_conflict option.

– 21 min read
ecto elixir
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Organize your tests with context tags

Clean up your test configuration and highlight test specifics with dedicated tags.

– 6 min read
exunit testing context elixir
a wizard filling an elixir into a bottle in a dusty laboratory

Import a CSV into Postgres using Elixir

Learn how to dump and analyze large amounts of data from a CSV file into Postgres quickly.

– 8 min read
postgres csv elixir
two wizards looking at a whiteboard in a modern laboratory

Simulating Conway's Game of Life with 100.000 Erlang Processes

Learn about how to tweak the performance of 100.000 Erlang processes and why Elixir isn't really that slow.

– 13 min read
development elixir liveview
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Set up Livebook on your Raspberry Pi with Nerves

Write and test code directly on your Raspberry Pi with Livebook.

– 6 min read
development nerves raspberry pi elixir livebook liveview
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Sending text messages from a Raspberry Pi with Nerves

Send a text message using the Waveshare GSM/GPS/GNSS Hat on a Raspberry Pi and Nerves.

– 11 min read
development nerves raspberry pi elixir
a phoenix showing his id card to a security person at a club

How to implement U2F Authentication with Phoenix LiveView

Arguably, the strongest multi-factor authentication method is U2F. Here is how to integrate it with your Phoenix LiveView application.

– 20 min read
development u2f phoenix elixir
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How to deploy a Phoenix project with Fly.io

Fly.io allows you to quickly deploy a Phoenix application in different regions in the world. Here is how to get started.

– 11 min read
development phoenix elixir

Bridge the Gap - Bring your Software to life with Elixir and Nerves

Writing code is fun, but nothing tops seeing your code moving things in the real world. That’s why I tested out the Nerves library.

– 5 min read
development nerves elixir

State Management with Phoenix LiveView and LiveEx

Writing code is fun, but nothing tops seeing your code moving things in the real world. That’s why I tested out the Nerves library.

– 8 min read
development phoenix elixir