50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
module GroupDescendant
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def hierarchy(hierarchy_top = nil, preloaded = nil)
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preloaded ||= ancestors_upto(hierarchy_top)
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expand_hierarchy_for_child(self, self, hierarchy_top, preloaded)
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end
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def self.build_hierarchy(descendants, hierarchy_top = nil)
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descendants = Array.wrap(descendants).uniq
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return [] if descendants.empty?
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unless descendants.all? { |hierarchy| hierarchy.is_a?(GroupDescendant) }
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raise ArgumentError.new('element is not a hierarchy')
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end
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all_hierarchies = descendants.map do |descendant|
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descendant.hierarchy(hierarchy_top, descendants)
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end
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Gitlab::Utils::MergeHash.merge(all_hierarchies)
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end
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private
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def ancestors_upto(hierarchy_top = nil)
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if hierarchy_top
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Gitlab::GroupHierarchy.new(Group.where(id: hierarchy_top)).base_and_descendants
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else
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Gitlab::GroupHierarchy.new(Group.where(id: self)).all_groups
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end
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end
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def expand_hierarchy_for_child(child, hierarchy, hierarchy_top, preloaded)
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parent = preloaded.detect { |possible_parent| possible_parent.is_a?(Group) && possible_parent.id == child.parent_id }
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parent ||= child.parent
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if parent.nil? && hierarchy_top.present?
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raise ArgumentError.new('specified top is not part of the tree')
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end
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if parent && parent != hierarchy_top
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expand_hierarchy_for_child(parent,
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{ parent => hierarchy },
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hierarchy_top,
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preloaded)
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else
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hierarchy
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end
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end
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end
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