iiinova — where your digital self keeps evolving

Daniel Hoelzgen

@dhoelzgen.dev

998 followers 646 following 76 posts

#ElixirLang and #Ruby Lead Developer at 9elements, an agency for outstanding digital products. Focused on Artificial Intelligence, Logic, and Data Visualization.

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Daniel Hoelzgen @dhoelzgen.dev · 22/04/2026

Most of the @9elements.com elements team for @elixirconf.bsky.social EU 2026 arrived in Málaga. Looking forward to an awesome conference and to catching up with everyone here. Come say hi whenever you see us around. #elixirlang

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Daniel Hoelzgen @dhoelzgen.dev · 10/09/2025

Working on a small example app for my upcoming @elixir-ruhr.dev talk about @ash-hq.org. Really impressed how easily Ash AI integrates complex LangChain tool calls with just a few lines of code!

A screenshot of a chat-bot web application, responding with a list of events to the user query to list Elixir / Ash related events coming up this month.

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Daniel Hoelzgen @dhoelzgen.dev · 17/05/2025

#ElixirConf 2025 was absolutely wonderful. First one since 2017, and the community is still just as great, lovely, and open. Tons of inspiring talks and conversations, can’t wait to try Ash AI! See you at the next one, hopefully not in another 7 years.

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Daniel Hoelzgen @dhoelzgen.dev · 28/02/2025

This morning, I talked with my daughter about weekdays - specifically, what day it will be after a given number of days. I explained that adding multiples of seven doesn’t change the weekday, only the remainder matters. Not the easiest concept for a four-year-old.

A digital interface displays a ‘Weekdays’ calendar with a colorful and playful design. The top section includes a row of buttons representing days of the week, each paired with an emoji (e.g., a moon for Monday, fire for Tuesday, water drop for Wednesday). Below, a number input with plus and minus buttons allows for selecting a numerical value, currently set to 15. The lower section presents a calendar-like grid with labeled weekdays and corresponding numbers. Some days are highlighted in different colors, such as Friday (yellow) and Saturday (pink). An arrow and emojis (a sprout and a rainbow) suggest a transformation or mapping concept. The overall aesthetic features soft purple tones with bold, rounded typography.

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Daniel Hoelzgen @dhoelzgen.dev · 18/10/2023

To avoid variable leak issues, I added an around action to the top-level controller, clearing the store after each request. Is this the way to go, or does anyone know a better solution besides Preloaders?

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Daniel Hoelzgen @dhoelzgen.dev · 18/10/2023

To allow eager loading scoped associations that require a parameter in my #Ruby on #Rails #ActiveRecord models, I use a global store to provide the info I need. It's a bit clunky, but Preloaders would not allow chaining.

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