added 260907 version of worker toolkit

worker-toolkit-flaredown/repo/backend/app/models/food.rb

@@ -0,0 +1,54 @@
+class Food < ActiveRecord::Base
+  LANG_MAP = {
+    en: :english,
+    it: :italian
+  }.freeze
+
+  has_many :food_translations, class_name: "Food::Translation"
+
+  translates :long_desc, :shrt_desc, :comname, :sciname
+
+  alias_method :name, :long_desc
+
+  class << self
+    def fts(query, limit, user_id)
+      find_by_sql(
+        [
+          fts_sql,
+          {
+            user_id: user_id,
+            lang: LANG_MAP[I18n.locale] || :simple,
+            query: query.strip.split(/(\s*,\s*)|\s+/).map { |s| "#{s}:*" }.join("&"),
+            limit: limit,
+            locale: I18n.locale
+          }
+        ]
+      )
+    end
+
+    private
+
+    def fts_sql
+      <<-SQL.strip_heredoc
+        SELECT id, long_desc, searchable, global
+        FROM (
+          SELECT
+            to_tsvector(:lang, ft.long_desc) AS searchable,
+            foods.id AS id,
+            foods.global AS global,
+            ft.long_desc AS long_desc
+          FROM foods
+          INNER JOIN food_translations AS ft ON ft.food_id = foods.id
+          WHERE ft.locale = :locale AND foods.id IN (
+            SELECT uf.food_id
+            FROM user_foods AS uf
+            WHERE uf.user_id = :user_id
+          ) OR foods.global IS TRUE
+        ) f
+        WHERE f.searchable @@ to_tsquery(:lang, :query)
+        ORDER BY ts_rank_cd(f.searchable, to_tsquery(:lang, :query), 1) DESC
+        LIMIT :limit
+      SQL
+    end
+  end
+end