On Tuesday, February 6, 2018 at 8:16:45 AM UTC-8, Matthew Ford wrote:
>
> Sorry to bring this back up from the grave - but has anyone got a good
> script for generating an ERD?
>
> The links I found pointing to pastie were broken.
>
Here's the source code for sequel_dot:
require 'sequel'
Sequel::Model.plugin :subclasses
ARGV.each{|f| require f}
associations = []
classes = []
Sequel::Model.descendents.each do |c|
next if c.name.empty?
c.associations.each do |a|
ar = c.association_reflection(a)
associations << [c.name, ar[:type], ar.associated_class.name]
end
end
styles = {:many_to_one=>:bold, :one_to_many=>:solid,
:many_to_many=>:dashed, :one_to_one=>:dotted}
puts "digraph G {"
puts associations.uniq.map{|c, t, ac| " #{c} -> #{ac}
[style=#{styles[t]}];"}.sort
puts "}"
Thanks,
Jeremy
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