🤔.erb

{
  "query": "<%= params[:query] %>",
  "suggestions": [
    <% size = @customers.size %>
    <% @customers.each_with_index do |customer, i| %>
      {
        "value": "<%= customer.id %>",
        "data": <%= raw customer._source.to_json %>
      }<%= i + 1 == size ? "" : "," %>
    <% end %>
  ]
}