Use generated columns for Movie and TvShow tsv search indexes (#33)

Author: spohlenz

db/migrate/20241009064048_add_generated_tsv_column_to_movies.rb

@@ -0,0 +1,10 @@
+class AddGeneratedTsvColumnToMovies < ActiveRecord::Migration[7.2]
+  def up
+    execute "DROP TRIGGER IF EXISTS tsvectorupdate ON movies"
+
+    remove_column :movies, :tsv, :tsvector
+
+    add_column :movies, :tsv, :tsvector, as: "to_tsvector('english', coalesce(title, '') || ' ' || coalesce(tagline, '') || ' ' || coalesce(overview, ''))", stored: true
+    add_index :movies, :tsv, using: 'gin'
+  end
+end

db/migrate/20241009064855_add_generated_tsv_column_to_tv_shows.rb

@@ -0,0 +1,10 @@
+class AddGeneratedTsvColumnToTVShows < ActiveRecord::Migration[7.2]
+  def up
+    execute "DROP TRIGGER IF EXISTS tsvectorupdate ON tv_shows"
+
+    remove_column :tv_shows, :tsv, :tsvector
+
+    add_column :tv_shows, :tsv, :tsvector, as: "to_tsvector('english', coalesce(name, '') || ' ' || coalesce(overview, ''))", stored: true
+    add_index :tv_shows, :tsv, using: 'gin'
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2024_10_03_013148) do
+ActiveRecord::Schema[7.2].define(version: 2024_10_09_064855) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -89,7 +89,7 @@
     t.integer "vote_count", default: 0
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
-    t.tsvector "tsv"
+    t.virtual "tsv", type: :tsvector, as: "to_tsvector('english'::regconfig, (((((COALESCE(title, ''::character varying))::text || ' '::text) || (COALESCE(tagline, ''::character varying))::text) || ' '::text) || (COALESCE(overview, ''::character varying))::text))", stored: true
     t.index ["release_date"], name: "index_movies_on_release_date"
     t.index ["title"], name: "index_movies_on_title"
     t.index ["tmdb_id"], name: "index_movies_on_tmdb_id"
@@ -138,7 +138,7 @@
     t.integer "vote_count", default: 0
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
-    t.tsvector "tsv"
+    t.virtual "tsv", type: :tsvector, as: "to_tsvector('english'::regconfig, (((COALESCE(name, ''::character varying))::text || ' '::text) || (COALESCE(overview, ''::character varying))::text))", stored: true
     t.index ["name"], name: "index_tv_shows_on_name"
     t.index ["tmdb_id"], name: "index_tv_shows_on_tmdb_id"
     t.index ["tsv"], name: "index_tv_shows_on_tsv", using: :gin