I'm interested in pushing inserts and updates of many_to_many
associations into models. I have the following code at the moment. Is
there a better approach to this? I am using a multiple select in the
HTML form.
Regards,
Jamie Hodge
--
module App
module Model
class Collection < Sequel::Model
plugin :validation_helpers
plugin :timestamps, update_on_create: true
plugin :association_dependencies
one_to_many :documents
many_to_many :keywords
many_to_many :authors
add_association_dependencies \
documents: :destroy, keywords: :nullify, authors: :nullify
attr_reader :author_ids, :keyword_ids
def validate
super
validates_presence [:title, :description, :copyright]
validates_length_range 1..255, [:title, :description]
validates_integer :copyright
validates_exact_length 4, :copyright
end
def author_ids=(value)
@author_ids = value
modified!
end
def keyword_ids=(value)
@keyword_ids = value
modified!
end
def after_save
super
remove_all_authors
Array(author_ids).each {|id|
add_author(App::Model::Author[id]) }
remove_all_keywords
Array(keyword_ids).each {|id|
add_keyword(App::Model::Keyword[id]) }
end
end
end
end
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