Creates a dropdown menu to search for examples by the literary device they illustrate.

dropdown_search.rb

# Dropdown search for examples categorized by their device

<%= form_tag(examples_path, :method => "get") do %>
  <%= select("example", "device", Example.all.map{ |e| e.device }.uniq.sort, selected: 'alliteration') %>
  <%= submit_tag "Go!" %>
<% end %>
  
# The home page checks to see if a device has been selected in the dropdown search, and shows examples of that device if so
  
def index
  if params[:example]
    @examples = Example.where(device: params[:example][:device].downcase).paginate(:page => params[:page], :per_page => 10)
    @query = params[:example][:device]
  else
    @examples = Example.all.paginate(:page => params[:page], :per_page => 10)
  end
end