Add batch operations

[AMHOL]

Example:

class User < ActiveRecord::Base
  include Nazrin::Searchable

  searchable_configure do |config|
    # My config
  end

  searchable do
    fields [:name, :email]
  end
end
# Create some users
user_1 = User.create(name: 'Jane', email: 'no-reply@jane-fake-email.com')
user_2 = User.create(name: 'Joe', email: 'no-reply@joe-fake-email.com')
user_3 = User.create(name: 'John', email: 'no-reply@john-fake-email.com')
# Delete a user
user_3.destroy

User.nazrin_batch_operation(
  add: [user_1, user_2],
  delete: [user_3]
)

[tsuwatch]

I would like you to specify delete for typo

[tsuwatch]

I want alias method like https://github.com/AMHOL/nazrin/blob/1575066637d1c8fd03b336ee307978c49e790bc5/lib/nazrin/searchable.rb#L32

[AMHOL]

Thanks for review @tsuwatch, I also added create as an alias of add and destroy as an alias of delete, and made it raise an error if the operations are not one of the above.

[AMHOL]

Let me know if you want me to squash commits

[tsuwatch]

Why need create and destroy?

[AMHOL]

I just thought I may as well add them as aliases as they're familiar methods for people using Rails, I can remove if you like?

[AMHOL]

Gonna change this to each rather than map as map implies that the return value matters.

[tsuwatch]

Hmm, I think It is not necessary to support the aliases.

[AMHOL]

@tsuwatch removed

[tsuwatch]

Nice work, thank you!!!

[AMHOL]

Thanks @tsuwatch 😄