ALT A graphic showing how TanStack DB and Phoenix Sync work together to provide optimistic local state, live queries, database persistence, and custom business logic.

ALT An example resource with a circuit breaker defined. If 10 failures are hit within 10 seconds, the action will fast fail for a minute to let the circuit reset.

ALT An example of ColocatedJS that registers a custom `copy-to-clipboard` event in a Phoenix LiveView function component.

ALT An example of the new ColocatedHook in LiveView, in which an input has custom JS that applies a specific phone number format to the value.

ALT A screenshot of some Elixir code from the budget tracking YouTube series. A function called `summarize_budget_until_period_end` is shown alongside some of its tests.

ALT A screenshot of the daisy UI documentation site, highlighting the new llms.txt option. Includes a sample from the markdown content.

ALT Elixir code sample of a function called without_preloads, which clears associated fields from Ecto models in an ExMachina factory

ALT The updated list_transactions test, using without_preloads

ALT A failed Elixir test, highlighting that the budget association was not loaded on each transaction schema instance. ExMachina constructs objects with their full association tree, but Ecto queries don't eagerly preload associated schema instances.

ALT An Elixir code snippet showing an ExMachina factory in a budget tracking application's test suite.

ALT An Elixir test function verifying that list_transactions gets properly scoped to a specific parent budget.

ALT An example Ecto query against Timescale DB, including functions not natively built into Ecto's API. Example from the package docs at https://hexdocs.pm/timescale/intro.html#querying-with-timescale

ALT Example PostGIS query in Ecto, using the geo_postgis library's `st_distance` function. Internally this uses `fragment` to construct the query and properly support bindings. Example from the geo_postgis readme: https://hexdocs.pm/geo_postgis/readme.html

ALT An advanced Elixir Ecto query using the BETWEEN expression to perform a join between database tables based on overlapping dates. This is done through a fragment, since there is no `between` function built into the Ecto library.

ALT A visual explainer graphic showing how an Ecto schema module's name is passed through a changeset and the FormData protocol to become the name of a form in Phoenix framework.

ALT A screenshot of a transaction entry screen in a Phoenix LiveView application. The name attribute of a select input starts with `budget_transaction`, but where does that string come from?

ALT The implementation of the FormData protocol for Ecto.Changeset, from the phoenix_ecto package. It shows that a changeset accesses and manipulates the __struct__ value of the changeset's data.

ALT Error message in a Phoenix application. "the :to option in a redirect expects a path but was https://example.com"

ALT Documentation of the Phoenix controller redirect/2 method, which highlights that for security the :to option only supports paths.

ALT Error page from a browser navigating to /budgets/abcd when budget IDs are supposed to be UUIDs. The error says "value `abcd` cannot be dumped to type :binary_id in query"

ALT A Phoenix LiveView mount function that uses a guard called is_uuid to avoid querying on a non-UUID identifier passed in by the request's path parameter.

ALT A very verbose Elixir guard expression called is_uuid, which uses binary_part and the full list of hexadecimal characters—upper and lower case—to perform its validation.

ALT A data model diagram showing the user and token tables from the previous video, joined to a budget table containing a name, description, start / end dates, and a creator_id. Creator_id is a foreign key reference to the user's ID.

ALT An updated ConnCase module, with the html_escape function imported.

ALT A LiveView test, using html_escape to help assert text content with HTML encoding.

ALT A graphic explaining the data model and capabilities of Phoenix authentication generated by phx.gen.auth.

ALT A graphic showing the dependency chain of Phoenix LiveView forms, where a LiveView renders a Form, which references a Changeset, which is defined within a Schema, which is migrated into a Database.