Mbleigh Seed Fu

Seed many would seed a group of records using special _array commands. Syntax should be as follows:

User.seed_many(:login) do |u|
  u.login_array = %w(bob kevin frank)
  u.role = 'Administrator' # will be the same for all seeds
  u.first_name_array = %w(Bob Kevin Frank)
  u.last_name_array = %w(Bobson Kevinson Frankle)
end

Should also be able to specify what should happen if the arrays are of inconsistent length (but raise an exception by default):

# Uses the last item for all remaining seeds when index runs out
User.seed_many(:login, :overflow => :last) do |u|
  ...
end

# Loops back through the array again
User.seed_many(:login, :overflow => :loop) do |u|
  ...
end