How to make hash/array of params out of several selects?

Question

I have two select dropdowns and when a user selects an option from each of them It has to group them in the following manner:

job =>
  {
    "types" => [1,2,3]
  }

or at least like this:

job => {
  "types" => { "first" => "1", "second" => "2" }
}

Is this possible to do in Rails?

For example, this example only sends the last select value:

<%= simple_form_for @job, url: jobs_path do |f| %>

  <% 2.times do %>
    <%= f.input :types, as: :select, collection: @types %>
  <% end %>

<% end %>

Answer 1

改用多重select怎么样？

<%=f.select(:types, @types, multiple: true) %>