Notes on Elixir, Phoenix and software engineering.https://utopos.github.io/https://utopos.github.io/posts/talks/elixirconf-eu-2026-reusable-liveview-components/https://utopos.github.io/posts/talks/elixirconf-eu-2026-reusable-liveview-components/My ElixirConf EU 2026 talk on building reusable, stateful LiveView components with a cleaner pattern than the usual approaches.Tue, 15 Sep 2026 20:49:03 GMThttps://curiosum.com/blog/hooking-up-with-liveview-stateful-widgets-with-function-componentshttps://curiosum.com/blog/hooking-up-with-liveview-stateful-widgets-with-function-componentsA reusable pattern for self-contained LiveView widgets that manage their own state, events, PubSub and URL params. Published on the Curiosum blog.Thu, 16 Apr 2026 09:00:00 GMThttps://curiosum.com/blog/fix-alpine-phoenix-liveview-5-integration-patterns-2025https://curiosum.com/blog/fix-alpine-phoenix-liveview-5-integration-patterns-2025Putting the A back in PETAL: five common Alpine.js and LiveView problems, from lost state to DOM conflicts, and the patterns that fix them. Published on the Curiosum blog.Wed, 29 Oct 2025 09:00:00 GMThttps://curiosum.com/blog/interactive-data-tables-in-phoenix-liveviewhttps://curiosum.com/blog/interactive-data-tables-in-phoenix-liveviewIntegrating AG Grid with LiveView for feature-rich tables: setup, data presentation and handling complex Ecto data. Published on the Curiosum blog.Tue, 04 Feb 2025 09:00:00 GMThttps://utopos.github.io/posts/ddd/ddd-eventstorming-strengths-and-limitations/https://utopos.github.io/posts/ddd/ddd-eventstorming-strengths-and-limitations/Where EventStorming's verb-centric modeling fits Domain-Driven Design tactical design, where it falls short, and how to combine it with other techniques.Thu, 04 Jul 2024 19:08:27 GMThttps://utopos.github.io/posts/ddd/ddd-eventstorming-example-for-system-design/https://utopos.github.io/posts/ddd/ddd-eventstorming-example-for-system-design/How EventStorming guides system design from the big picture down to software design, with its modeling primitives and workshop levels.Wed, 03 Jul 2024 14:34:42 GMThttps://utopos.github.io/posts/ddd/ddd-divide-and-conquer-the-domain/https://utopos.github.io/posts/ddd/ddd-divide-and-conquer-the-domain/Why a single, consistent domain model is an illusion, and how Bounded Contexts let you divide and conquer domain complexity.Thu, 27 Jun 2024 10:19:50 GMThttps://utopos.github.io/posts/ddd/ddd-strategic-design-explained/https://utopos.github.io/posts/ddd/ddd-strategic-design-explained/DDD Strategic Design explained with an example: subdomains, Ubiquitous Language, Bounded Contexts and Context Mapping for a university registration system.Tue, 25 Jun 2024 07:10:02 GMThttps://utopos.github.io/posts/elixir-validate-map-and-structs-keys-for-merging-at-compile-time/https://utopos.github.io/posts/elixir-validate-map-and-structs-keys-for-merging-at-compile-time/Validate map keys against a struct at compile time with a small macro, instead of discovering typos at runtime after deployment.Mon, 10 Jun 2024 08:04:28 GMThttps://utopos.github.io/posts/adding-streamasync-to-phoenix-liveview/https://utopos.github.io/posts/adding-streamasync-to-phoenix-liveview/Implement asynchronous assigns for LiveView streams and generate the boilerplate with a stream_async() macro.Thu, 06 Jun 2024 16:42:15 GMThttps://utopos.github.io/posts/how-to-report-postgres-custom-errors-in-ecto-changeset/https://utopos.github.io/posts/how-to-report-postgres-custom-errors-in-ecto-changeset/Capture custom Postgres errors as Ecto.Changeset errors instead of raising exceptions — no try/rescue, works out of the box with Phoenix.Mon, 10 Jan 2022 13:43:38 GMT