eg rails helper using request params and data set to create radio buttons for product filtering

product_filters_data_helper.rb

def ProductFiltersDataHelper.furniture_types
  [
    {name: "all", types: "all"},{name: "sofas and loveseats", types: "!table sofa couch sectional loveseat settee"},
    {name: "wardrobes", types: "wardrobe armoire chifforobe"},{name: "buffets", types: "buffet sideboard credenza"},
    {name: "chairs and stools", types: "chair armchair recliner stool rocker"},{name: "tables", types: "table sidetable"},
    {name: "beds", types: "!table bed"},{name: "desks", types: "desk"},
    {name: "bookcases and shelves", types: "!desk bookcase shelves"},{name: "cabinets", types: "cabinet"},
    {name: "mirrors", types: "mirror"}
  ]
end

product_filters_helper.rb

include ProductFiltersDataHelper #file containing subcategories

def product_type_filter
  html = "<fieldset class='sales-filters form-group mb-2' id='filter-by-type'>"
  title = "<p class='mb-half'>Type</p>"
  case request.params[:category]
  when
    "furniture"
    category_html = return_product_filter_radios(ProductFiltersDataHelper.furniture_types)
  when
    "lighting"
    category_html = return_product_filter_radios(ProductFiltersDataHelper.lighting_types)
  when
    "appliances"
    category_html = return_product_filter_radios(ProductFiltersDataHelper.appliance_types)
  else
    category_html = ""
    title = ""
  end
  html += title + category_html + "</fieldset>"
  html.html_safe
end

def return_product_filter_radios(categories)
  category_html = ""
  categories.each_with_index do |cat,i|
    category_html += "<div class='form-check'>
                        <label class='form-check-label'>
                        <input type='radio' class='small form-check-input' name='type' id='type-radios-#{cat[:name]}' value='#{cat[:types]}' #{'checked' if i == 0}>
                          #{cat[:name]}
                        </label>
                      </div>"
  end
  return category_html
end