discourse/lib/badge_posts_view_manager.rb

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# frozen_string_literal: true
class BadgePostsViewManager
VIEW_NAME = "badge_posts".freeze
def self.create!
sql = <<~SQL
CREATE VIEW #{VIEW_NAME} AS
SELECT p.*
FROM posts p
JOIN topics t ON t.id = p.topic_id
JOIN categories c ON c.id = t.category_id
WHERE c.allow_badges AND
p.deleted_at IS NULL AND
t.deleted_at IS NULL AND
NOT c.read_restricted AND
t.visible AND
p.post_type IN (1,2,3)
SQL
DB.exec(sql)
raise "Failed to create '#{VIEW_NAME}' view" unless badge_posts_view_exists?
end
def self.drop!
DB.exec("DROP VIEW #{VIEW_NAME}")
raise "Failed to drop '#{VIEW_NAME}' view" if badge_posts_view_exists?
end
def self.badge_posts_view_exists?
sql = <<~SQL
SELECT 1
FROM pg_catalog.pg_views
WHERE schemaname
IN ('public')
AND viewname = '#{VIEW_NAME}';
SQL
DB.exec(sql) == 1
end
end