for elem1, elem2, elem3 in list1, list2, list3 do
  Repo.insert{elem1, elem2, elem3}
end

@list_of_names      ~w(Daniel Admin Goran Tomislav User1)
@list_of_usernames  ~w(daniel admin goran marex User2)
@list_of_passwords  ~w(123456 000000 123456 123456 123456)

Repo.insert!(%User{
  name: name,
  username: username,
  password: password
})

defmodule <%=Rumbl%>.DatabaseSeeder do

  alias <%=Rumbl%>.Repo
  alias <%=Rumbl%>.User

  @list_of_names      ~w(Daniel Admin Goran Tomislav User56)
  @list_of_usernames  ~w(daniel admin goran marex user56)
  @list_of_passwords  ~w(123456 000000 123456 123456 123456)

  def insert_user do
    Repo.insert!( %User{
      name:     (@list_of_names     |> Enum.take_random),
      username: (@list_of_usernames |> Enum.take_random),
      password: (@list_of_passwords |> Enum.take_random)
    })
  end
end
(1..5) |> Enum.Each(fn _ -> <%=Rumbl%>.DatabaseSeeder.insert_user end)