Last time I ve talked about batch updates. Today I would like to focus on batch destroy.
I will assume that you have read my last post.
Enabling batch_destroy action
class PlayersController < ApplicationController
active_scaffold :player do |conf|
....
conf.actions << :batch_base
conf.actions << :batch_destroy
....
end
end
If you reload your page, you will see another entry in batch collection pop-up menu, which you might use to destroy marked or listed records.
Process Mode Configuration
There s one thing I have nt mentioned so far. In default mode batch_destroy will perform a “normal” activerecord destroy, which includes validation, record base_authorization and callbacks,…. That might take quite some time if you want to destroy a huge number of records.
You can configure to speed up, but you have to pay a price:
class PlayersController < ApplicationController
active_scaffold :player do |conf|
....
conf.batch_destroy.process_mode = :delete_all
....
end
end
process_mode delete_all means that we will use ActiveRecords delete_all method to destroy all records.
But be careful and let me tell you about the price you have to pay:
- No record base authorization
- No record level errors
- No ActiveRecord callbacks, validations,…
Just to complete this story, you ve got same configuration option in batch_update.
Wish you a great weekend!
