This class is used to verify that all migrations have been run before loading a web page if config.active_record.migration_error
is set to :page_load
.
Methods
Class Public methods
new(app, file_watcher: ActiveSupport::FileUpdateChecker) Link
Instance Public methods
call(env) Link
# File activerecord/lib/active_record/migration.rb, line 623 def call(env) @mutex.synchronize do @watcher ||= build_watcher do @needs_check = true ActiveRecord::Migration.check_pending!(connection) @needs_check = false end if @needs_check @watcher.execute else @watcher.execute_if_updated end end @app.call(env) end