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Versions: 11
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Contents
module ActiveTools
module ActionPack
module ActionView
module PerformAsTree
def self.line(item, children_method, depth = 0, &block)
yield item, depth
item.send(children_method).each do |child|
line(child, children_method, depth+1, &block)
end
end
end
end
end
module OnLoadActionView
def perform_as_tree(scope, options = {}, &block)
options = options.with_indifferent_access
children_method = options[:children_method]||:children
parent_method = options[:parent_method]||:parent
id_key = options[:id]||nil
scope = case scope
when ::ActiveRecord::Relation then
parent_key = scope.klass.reflections[children_method].foreign_key
scope.where(parent_key => id_key)
when ::Array, ::Set then
scope.select {|item| item.send(parent_method) == id_key}
else
raise(TypeError, "ActiveRecord::Relation, Array or Set expected, #{scope.class.name} passed!")
end
scope.each do |item|
ActionPack::ActionView::PerformAsTree.line(item, children_method, 0, &block)
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems