shoney.arickathil
aee78c2296
- new chapter 7, "Storage modes: durable and resident", covering what master gains with the databasev2 cherry-pick: durable: false for a RAM-only table, resident: keys for a table that outgrows RAM - states the parts a reader would otherwise hit as surprises: a keys-resident table is REFUSED at startup without WO_DATA, an update appends a delta rather than rewriting the row, and the chain is bounded at 16 links so a hot row does not degrade reads or replay - quotes the measured 2.55x smaller resident set, not an estimate - actors/deps/serving shift to ord 8/9/10; seeding is ord-driven so an existing WO_DATA keeps its rows and only a fresh boot reseeds - home card says a table can be RAM-only or outgrow RAM - two gate legs pin the new chapter; site-accept 23 checks, 0 failures Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> (cherry picked from commit 3b503c0db50aa737dd06ef6d17151c654a42c59b)
108 lines
6.8 KiB
Markdown
108 lines
6.8 KiB
Markdown
# site — how it is put together
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Written 2026-08-23 with the sample's landing; restructured 2026-08-25
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onto the program template's MVC layout (`docs/examples/shop`), so the two
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samples now read the same way.
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## The layout
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| file | layer | what it owns |
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| --- | --- | --- |
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| `types.wo` | MODEL | the `Chapter` `@table`, the `ChapterLink` projection, `Chapters.links()`, and `seed_if_empty()` |
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| `content.wo` | MODEL (content) | the ten chapter bodies as fragment-returning functions, plus `seed_chapters()` |
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| `layout/app.wo` | VIEW (chrome) | `AppShell` — the component that fills writeonce-view's `Layout` — the two named widths, and `html_error` |
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| `layout/header.wo`, `layout/footer.wo` | VIEW (chrome) | the shared nav bar (brand = mark + wordmark) and footer |
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| `layout/logo.wo` | VIEW (chrome) | the mark as inline SVG, plus the `<head>` links |
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| `install/view.wo`, `install/controller.wo` | VIEW + CONTROLLER | `/install` — the toolchain guide. Static copy, so `InstallPage` has no fields |
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| `packages/view.wo`, `packages/controller.wo` | VIEW + CONTROLLER | `/packages` and `/packages/:name` — the catalogue, its cards, and per-package usage |
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| `favicon/controller.wo` | CONTROLLER | `/favicon.svg` — builds its own `Resp` (image/svg+xml) |
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| `home/view.wo` | VIEW | `HomePage` and the homepage's code showcase |
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| `home/controller.wo` | CONTROLLER | `Home` — the `/` handler |
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| `chapter/view.wo` | VIEW | `ChapterNav`, `ChapterPage` |
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| `chapter/controller.wo` | CONTROLLER | `ShowChapter` — the `/ch/:slug` handler |
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| `admin/controller.wo` | CONTROLLER | `AdminEdit` — bearer-gated edit, answers a redirect (no view: it redirects) |
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| `health/controller.wo` | CONTROLLER | `Health` — the liveness probe (no view: it answers text) |
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| `main.wo` | BOOTSTRAP | seed, routes, serve. Nothing else |
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| `wo.toml` | — | the two `[deps]`: `framework` (serving) and `html` (markup) |
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One feature = one directory = one module, holding that feature's view
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and its controller together. A module sees its own declarations plus
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what it `use`s, so `home/` reaching the chapter nav has to say `use
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chapter`.
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The model stays at the root and is reachable from everywhere: a CLASS
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crosses module lines without being exported, and only a free `fn` is
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module-scoped (`WO-E210`). That single rule explains the whole layout —
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`Chapter` and `ChapterLink` are classes, so the feature modules just
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name them; the shared query would have been a free fn, so it is a
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`static fn` on `Chapters` instead. (`pub` cannot prefix an `@table`
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class — recorded gap #1 — but nothing needs it to.)
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## Decisions that are not obvious from the code
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- **Chapters are rows, not constants.** `seed_if_empty()` inserts them
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only when the table answers empty, so a WAL restart keeps admin edits
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instead of reseeding over them — the sample's own proof of chapter 6's
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claim. The seed bodies are BUILT with writeonce-view's builders at boot; after
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that the table is the truth and the builders are never consulted again.
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- **The seam is enforced by where the query sits.** `Chapters.links()`
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lives with the MODEL and hands the view a `multi ChapterLink` —
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a projection, not a cursor. No component in this sample touches the
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database, which is what lets `ChapterNav` be the same component on the
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homepage and on every chapter page, differing only by `current`.
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- **`HomePage` and `ChapterPage` hold a `Component`, not chapter data.**
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The nav arrives as an already-built child component in a slot, so
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neither page knows what a chapter is. That is content projection —
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Angular's `<ng-content>`, with the slot as an ordinary field.
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- **Two widths, named once.** `AppShell` carries a `container` field and
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`layout/app.wo` exports `reading_shell` / `wide_shell`. The Tailwind
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class strings appear in exactly one place instead of being repeated at
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every call site.
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- **Auth is handler-side by doctrine.** The framework ships mechanism
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(`bearer_token`, constant-time `ct_eq`); which routes are gated and by
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which token is policy, so `AdminEdit` checks its own field. No global
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middleware — the public pages stay public.
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- **`ok_html` is the framework's**, beside `ok_text`/`ok_json`: a status
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line plus a content-type is transport, not rendering.
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- **`\$` in chapter code samples.** Chapter sources show interpolation
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(`${port}`) inside string literals of a language that interpolates —
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the lexer's `\$` escape keeps them literal; `code_block()` then
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HTML-escapes the result. This is also why those two samples stay
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escaped `"..."` strings rather than becoming raw literals: a raw
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literal has no escape character, so it cannot spell a literal `${`.
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- **Concat spans lines two ways now.** A line ENDING in `..` continues on
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the next (the one newline suppression in the language) — it never works
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at the START of a line. For markup, prefer the backtick raw literal:
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real newlines, real double-quoted attributes, source indentation
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removed at compile time, `${ }` raw and `{{ }}` auto-escaping. The old
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"`..` does not straddle newlines, so build accumulator-style" note is
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obsolete and was removed.
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- **The logo is inline SVG, authored once.** `logo_svg(px)` goes in the
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nav brand and `favicon_svg()` is served at `/favicon.svg` — a dark tile
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with a two-stroke "W", white then accent blue. No asset pipeline, no
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binary in the repo, and it stays legible at 16px. The `<head>` link
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reaches the document through `Layout`'s `head` slot.
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- **A raw literal cannot contain a literal `{{`.** The packages page has
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prose ABOUT `{{ }}` holes, and writing it directly would have made it a
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hole; it is written with `{` entities instead. This is the same
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limitation the chapter code samples hit with `${`, and the reason both
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doors exist.
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- **Downloads are the framework's, not the site's.** `/dl/*path` is
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`StaticFiles` mounted in `main.wo` with a 16 MiB ceiling — no
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controller, because there is no decision to make. `WO_DIST` says where
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the tarballs are (default `./dist`). The install page offers the GitHub
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release as primary and this as a mirror, with the `.sha256` beside it.
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- **The supported-systems list is read off the binaries**, not off a
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wish list: `file` gives the triple, and the highest `GLIBC_` symbol
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version they import gives the libc floor (2.38 today). Overstating
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support costs a reader an afternoon.
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- **`SITE_HOST` picks the interface.** Loopback by default — right behind
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a proxy — with the env var for reaching a dev instance across the LAN.
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The bound address is printed at startup.
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- **writeonce-view's sheet is static.** Tailwind's class NAMES, one hand-written
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CSS string inlined per page by `page()` — self-contained responses, no
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toolchain; growing the sheet is appending a line in `tw_css()`.
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Gate: `just site` — see `scripts/site-accept.sh` (11 checks; the restart
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leg polls `/health` instead of sleeping, so it does not share
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web-app-accept's 0.5s boot race).
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