Bryce
3ecd115f76
Capture the proven whole-form hx-select swap method as a reusable skill so every later modal migration is cheaper and consistent. No app code changes. - SKILL.md: the per-migration playbook (classify → baseline → characterize → consolidate render fns → templatize → wire HTMX → collapse routes → verify → commit → feed skill) + Growth contract + non-negotiables. - reference/swap-doctrine.md: the four swap rules, focus invariant, Alpine-survives- swap hardening, target-selector strategy — worked from the real edit.clj swaps (memo no-request, account→location targeted cell, amount→totals sibling-tbody, vendor/mode/row whole-form). 0 OOB. - reference/render-functions.md: explicit-data or top-rooted cursor; the MapCursor fake + transaction-account-row-no-cursor* twin as the smell to remove. - reference/form-vs-wizard.md: classification + the data-driven session-backed (formtools SessionStorage) engine that replaces the snapshot round-trip + protocol. - reference/selmer-conventions.md: STUB, validated in Phase 2. - component-cookbook.md / gotchas.md / test-recipes.md / scorecard.md: seeded from what transaction-edit proves (7 cookbook entries, caret-survival + typeahead test recipes, scorecard baseline LOC 1608 / ~12 routes / 1 no-cursor twin / 2 faked roots / 0 OOB). Scorecard (Transaction Edit baseline, before Phase 2): LOC 1608, routes ~12, no-cursor twins 1, faked-cursor roots 2, snapshot merges ~75, OOB 0, mixed hx- 8.
104 lines
4.6 KiB
Markdown
104 lines
4.6 KiB
Markdown
# Component cookbook
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GROWS every migration. Each entry: what it is, the swap rule it uses, and the canonical
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snippet. Reuse these before writing anything new; the success signal is *more reuse each
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migration*.
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Seeded from `transaction/edit.clj` (Hiccup form — Selmer versions land in Phase 2).
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---
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## typeahead (account / vendor) — Alpine + tippy, survives swaps
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Used for account and vendor selection. Click-to-select (not a live text caret), so a
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whole-form swap on change is safe. Null-guard `tippy?`/`$refs.input?`.
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```clojure
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(defn account-typeahead* [{:keys [name value client-id x-model]}]
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[:div.flex.flex-col
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(com/typeahead {:name name
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:placeholder "Search..."
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:url (hu/url (bidi/path-for ssr-routes/only-routes :account-search)
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(cond-> {:purpose "transaction"} client-id (assoc :client-id client-id)))
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:id name
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:x-model x-model ; binds selected value into the row's Alpine scope
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:value value
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:content-fn (fn [v] (:account/name (d-accounts/clientize ... v client-id)))})])
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```
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Reuse note: `:x-model` lets the *parent* row read the selected id (e.g. `accountId`) to
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gate a targeted location swap. See account-row.
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## account-row — cursor render fn + per-row targeted location swap + whole-form remove
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The canonical "row in a repeated grid" pattern. One render fn, top-rooted cursor.
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- account typeahead binds `accountId` into row Alpine scope;
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- **location cell** swaps *only itself* (`#account-location-<index>`) on `changed`
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(swap-doctrine Rule 2);
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- **amount cell** swaps *only* `#account-totals` (Rule 4, sibling tbody);
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- **remove** swaps the whole form (Rule 3).
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```clojure
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(defn transaction-account-row* [{:keys [value client-id amount-mode index]}]
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(com/data-grid-row
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(-> {:class "account-row" :id (str "account-row-" index)
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:x-data (hx/json {:show ... :accountId (fc/field-value (:transaction-account/account value))})
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:data-key "show" :x-ref "p"}
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hx/alpine-mount-then-appear)
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(fc/with-field :db/id (com/hidden {:name (fc/field-name) :value (fc/field-value)}))
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(fc/with-field :transaction-account/account
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(com/data-grid-cell {} (com/validated-field {:errors (fc/field-errors)}
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(account-typeahead* {:value (fc/field-value) :client-id client-id
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:name (fc/field-name) :x-model "accountId"}))))
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(fc/with-field :transaction-account/location
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(com/data-grid-cell {:id (str "account-location-" index)} ...Rule 2 targeted swap...))
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(fc/with-field :transaction-account/amount
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(com/data-grid-cell {} ...Rule 4 totals swap...))
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(com/data-grid-cell {:class "align-top"} ...Rule 3 whole-form remove...)))
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```
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TODO Phase 2: drop the `transaction-account-row-no-cursor*` twin; this is the only kept form.
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## totals in a sibling `<tbody>` — Rule 4 instead of OOB
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Running totals live in their own `<tbody id="account-totals">`, a sibling of the
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input-bearing rows, so an amount edit refreshes them with a plain targeted swap and never
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replaces the amount input (caret survives).
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```clojure
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(com/data-grid
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{:footer-tbody
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[:tbody {:id "account-totals"}
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(com/data-grid-row {:class "account-total-row"} ... (account-total* request) ...)
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(com/data-grid-row {:class "account-balance-row"} ... (account-balance* request) ...)]}
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...input rows...)
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```
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## money-input / text-input amount field — Rule 4 targeted totals swap
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```clojure
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(com/money-input
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{:name (fc/field-name) :id (str "account-amount-" index) :class "w-16 account-amount-field"
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:hx-post (bidi/path-for ssr-routes/only-routes ::route/edit-form-changed)
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:hx-target "#account-totals" :hx-select "#account-totals" :hx-swap "outerHTML"
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:hx-trigger "keyup changed delay:300ms" :hx-include "closest form"})
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```
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`%` mode swaps to `com/text-input {:type "number" :step "0.01"}` with the same swap attrs.
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## memo field — Rule 1, no request
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```clojure
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(com/text-input {:value (fc/field-value) :name (fc/field-name) :id "edit-memo"
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:placeholder "Optional note"}) ; no hx-* — rides along to save
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```
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## mode toggle ($/% radio, simple/advanced link) — Rule 3, whole-form swap
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```clojure
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(com/radio-card {:options [{:value "$" :content "$"} {:value "%" :content "%"}]
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:value amount-mode :name "step-params[amount-mode]"
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:hx-post (bidi/path-for ssr-routes/only-routes ::route/toggle-amount-mode)
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:hx-target "#wizard-form" :hx-select "#wizard-form" :hx-swap "outerHTML"
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:hx-include "closest form"})
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```
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TODO Phase 2: the simple/advanced toggle becomes a `?mode=` re-render (plain form), not a
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dedicated route.
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