Sha256: c4ad3418cb0170b5a3b2a311344978ae738da50d95899a41e6985d415296588e
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Size: 957 Bytes
Versions: 15
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Stored size: 957 Bytes
Contents
module ClosureTree
module Digraphs
extend ActiveSupport::Concern
def to_dot_digraph
self.class.to_dot_digraph(self_and_descendants)
end
# override this method in your model class if you want a different digraph label.
def to_digraph_label
_ct.has_name? ? read_attribute(_ct.name_column) : to_s
end
module ClassMethods
# Renders the given scope as a DOT digraph, suitable for rendering by Graphviz
def to_dot_digraph(tree_scope)
id_to_instance = tree_scope.reduce({}) { |h, ea| h[ea.id] = ea; h }
output = StringIO.new
output << "digraph G {\n"
tree_scope.each do |ea|
if id_to_instance.key? ea._ct_parent_id
output << " \"#{ea._ct_parent_id}\" -> \"#{ea._ct_id}\"\n"
end
output << " \"#{ea._ct_id}\" [label=\"#{ea.to_digraph_label}\"]\n"
end
output << "}\n"
output.string
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems