discourse/db/migrate/20200429095034_add_topic_th...

47 lines
1.3 KiB
Ruby

# frozen_string_literal: true
class AddTopicThumbnailInformation < ActiveRecord::Migration[6.0]
disable_ddl_transaction!
def up
# tables are huge ... avoid holding on to large number of locks by doing one at a time
execute <<~SQL
ALTER TABLE posts
ADD COLUMN IF NOT EXISTS image_upload_id bigint
SQL
execute <<~SQL
ALTER TABLE topics
ADD COLUMN IF NOT EXISTS image_upload_id bigint
SQL
execute <<~SQL
CREATE INDEX CONCURRENTLY IF NOT EXISTS
index_posts_on_image_upload_id ON posts USING btree (image_upload_id)
SQL
execute <<~SQL
CREATE INDEX CONCURRENTLY IF NOT EXISTS
index_topics_on_image_upload_id ON topics USING btree (image_upload_id)
SQL
ActiveRecord::Base.transaction do
add_column :theme_modifier_sets, :topic_thumbnail_sizes, :string, array: true
create_table :topic_thumbnails do |t|
t.references :upload, null: false
t.references :optimized_image, null: true
t.integer :max_width, null: false
t.integer :max_height, null: false
end
add_index :topic_thumbnails, [:upload_id, :max_width, :max_height], name: :unique_topic_thumbnails, unique: true
end
end
def down
raise IrreversibleMigration
end
end