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feat(db,models,crud): m002 menu tree + node CRUD with shim

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Replace the fixed two-level (categories + subcategories) menu shape
with an arbitrary-depth tree, capped at 4 levels. The legacy
Atitlan.io project this carries forward already used a self-FK tree;
real menus need the depth (Drinks -> Hot Beverages -> Coffee-based
-> Espressos). As a side benefit, the current CMS has no UI for
subcategories at all, so this refactor incidentally fixes that gap.

Pattern: adjacency list (parent_id self-FK) + denormalized
materialized path (TEXT, '/'-separated) + denormalized depth.
Rejected closure table (overkill at n=5..50) and Postgres ltree
(not portable to SQLite). Subtree queries become
'WHERE path LIKE :p || '%''; subtree moves are a single
SUBSTR + concat UPDATE; max-depth and cycle checks are O(1).

migrations.py
  m002_menu_tree:
    - CREATE TABLE menu_nodes (id, restaurant_id, parent_id,
      name, description, sort_order, image_url, depth, path, time)
      with indexes on (restaurant_id), (parent_id), (path).
    - Backfill depth-0 from categories; depth-1 from subcategories
      with path = parent.id || '/' || own.id.
    - ALTER menu_items ADD COLUMN node_id; backfill via
      COALESCE(subcategory_id, category_id). Index on node_id.
    - DROP subcategory_id, category_id; DROP TABLE subcategories,
      categories.

models.py
  - New MAX_MENU_DEPTH = 3 (zero-indexed; 4 levels total).
  - New MenuNodeRow (DB I/O shape) + MenuNode (extends with
    children + items for hydrated tree responses; never persisted).
  - New CreateMenuNode.
  - MenuItem.node_id is Optional (orphans allowed when a parent
    is deleted with cascade=False); CreateMenuItem.node_id is
    required (newly created items must land somewhere).
  - Category / Subcategory / Create* kept temporarily as
    transitional shim shapes for the old endpoints; dropped in
    commit 3.

crud.py
  - New: create/update/get/get_all/move/delete_menu_node and
    get_menu_tree. move_menu_node uses single-statement subtree
    rewrite (path = new_prefix || SUBSTR(path, old_len + 1)).
    Cycle check: new_parent's path must not contain node_id.
    Depth check: max descendant depth + delta_depth <= MAX_MENU_DEPTH.
    delete_menu_node default cascade=False (block on children/items);
    cascade=True detaches items (sets node_id NULL) rather than
    hard-deletes, since items carry nostr_event_ids and are
    revenue-bearing.
  - get_menu_tree fetches nodes + items in two queries and assembles
    the tree in O(n+m) Python — no recursive CTEs, identical on
    SQLite + Postgres.
  - Old create_category / get_categories / create_subcategory etc.
    rewritten as thin shims that translate to/from menu_nodes.
    Old endpoints keep working.
  - delete_restaurant cascade now deletes from menu_nodes
    (single statement) instead of categories + subcategories.

views_api.py
  - GET /restaurants/{id}/menu temporarily sources from menu_nodes
    via the shims; surfaces items only at depth-0 nodes for now
    (commit 2 replaces the whole block with a real tree response).

static/js/menu.js + templates/restaurant/menu.html
  - Rename category_id -> node_id in the item dialog payload so
    POST /menu_items satisfies the new CreateMenuItem schema.
    The CMS still renders against the depth-0 'categories'
    projection; full q-tree rewrite lands in commit 4.
This commit is contained in:
Padreug 2026-05-02 09:03:40 +02:00
commit 6272df1288
6 changed files with 516 additions and 63 deletions
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9
static/js/menu.js
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@ -33,7 +33,7 @@ window.app = Vue.createApp({
},
filteredItems() {
if (!this.selectedCategoryId) return this.items
return this.items.filter((i) => i.category_id === this.selectedCategoryId)
return this.items.filter((i) => i.node_id === this.selectedCategoryId)
},
categoryOptions() {
return this.categories.map((c) => ({label: c.name, value: c.id}))
@ -48,8 +48,7 @@ window.app = Vue.createApp({
_blankItem() {
return {
restaurant_id: '',
category_id: null,
subcategory_id: null,
node_id: null,
name: '',
description: '',
price: 0,
@ -123,8 +122,8 @@ window.app = Vue.createApp({
const item = existing
? {...existing}
: {...this._blankItem(), restaurant_id: this.restaurant.id}
if (!item.category_id && this.selectedCategoryId) {
item.category_id = this.selectedCategoryId
if (!item.node_id && this.selectedCategoryId) {
item.node_id = this.selectedCategoryId
}
this.itemDialog.data = item
this.itemDialog.imagesText = (item.images || []).join(', ')