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Render without layout for Turbo Frame requests
A classic Turbo foot-gun is returning a full layout inside a frame, which results in nested <html> and weird styling. The simplest fix is layout -> { turbo_frame_request? ? false : 'application' } at the controller level. I use this when I ha
by
Henry Kim
Django custom template filters for formatting
Custom template filters transform variables in templates. I decorate functions with @register.filter and optionally set is_safe=True for HTML output. Filters take one or two arguments. For formatting dates, numbers, or text, filters keep logic out of
by
Priya Sharma
Unit tests with #[test] and assert macros
Rust's built-in test framework is simple and powerful. Mark functions with #[test], and cargo test runs them. Use assert!, assert_eq!, and assert_ne! for assertions. Tests live alongside code in the same file, typically in a #[cfg(test)] mod tests blo
by
Marcus Chen
impl Trait for opaque return types
impl Trait in return position lets you return a type that implements a trait without naming it. This is useful for closures, iterators, or futures where the concrete type is complex or unnameable. The caller only knows it implements the trait. I use i
by
Marcus Chen
Form handling with React Hook Form
React Hook Form provides performant form handling with minimal re-renders. Unlike controlled components that re-render on every keystroke, it uses uncontrolled inputs with refs. The register function connects inputs to the form state, and handleSubmit
by
Maya Patel
GraphQL persisted queries (hash allowlist)
GraphQL endpoints can be abused with huge queries that are expensive to parse and execute. Persisted queries let clients send a hash (e.g. sha256:...) instead of the full query, and the server only executes queries it recognizes. This reduces payload
Box<T> for heap allocation and recursive types
Box<T> is Rust's simplest smart pointer: it allocates T on the heap and gives you ownership. When the Box goes out of scope, the heap memory is freed. I use Box when I need indirection (like recursive types), when moving large structs is expensi
by
Marcus Chen
Safer “find or create” with Unique Constraint + Retry
Race conditions happen. The correct “find or create” in production uses a unique constraint and a retry on conflict, not a naive check-then-insert. Let the database serialize the race.
by
Sarah Chen
Handle 401 responses in Turbo by forcing a full redirect
When a session expires, Turbo can end up swapping a login page into a frame, which is confusing. A practical fix is to detect 401 responses on the client and trigger a full-page visit (Turbo.visit) to the login URL. This keeps the app consistent and a
by
Henry Kim
gRPC unary interceptor for auth and timing logs
Interceptors are the cleanest way to standardize cross-cutting behavior in gRPC. I use a unary interceptor to extract authorization from metadata, validate it, attach the principal to context.Context, and log the method name and duration. This keeps s
SwiftUI task modifiers and async lifecycle
SwiftUI's .task modifier handles async operations tied to view lifecycle. The task starts when the view appears and cancels automatically when it disappears, preventing memory leaks. I use .task for data fetching, subscriptions, and long-running opera
Fast Fail for Missing Indexes (EXPLAIN sanity check)
When adding a new query path, run EXPLAIN in CI or a smoke task to catch missing indexes before production. You don’t need full query plans everywhere—just guard the hot paths.
by
Sarah Chen