rails2_filters

Model

def self.filter_products(filter_options)
    scope = System.scoped({})
    scope = scope.scoped :conditions => ["systems.blogging >= 2"]           if filter_options.include?("blogging")
    scope = scope.scoped :conditions => ["systems.chat >= 2"]               if filter_options.include?("chat")
    scope = scope.scoped :conditions => ["systems.classifieds >= 2"]        if filter_options.include?("classifieds")
    scope = scope.scoped :conditions => ["systems.forum >= 2"]              if filter_options.include?("forum")
    scope = scope.scoped :conditions => ["systems.events_calendar >= 2"]    if filter_options.include?("calendar")
    scope = scope.scoped :conditions => ["systems.link_management >= 2"]    if filter_options.include?("links")
    scope = scope.scoped :conditions => ["systems.photo_gallery >= 2"]      if filter_options.include?("gallery")
    scope = scope.scoped :conditions => ["systems.search_engine >= 2"]      if filter_options.include?("search")
    scope = scope.scoped :conditions => ["systems.syndicated_content >= 2"] if filter_options.include?("rss")
    scope = scope.scoped :conditions => ["systems. >= 2"]                   if filter_options.include?("")
    scope
end

Controller

  def filter
    @filter_url = params[:id]
    @filter_options = @filter_url.split('-') rescue nil
    unless @filter_options.blank?
      @systems = System.filter_products(@filter_options)
    else
      @filter_options = []
      @systems = System.all
    end
  end

  def filter_search
    @options = params[:options]
    @filter = []
    @options.each { |key,value|
      if value == "1"
        @filter << key
      end
    }
    @filters = @filter.sort.join('-')

    unless @filters.empty?
      redirect_to filter_path(@filters)
    else
      flash[:notice] = 'Select a filter condition!'
      redirect_to filter_path
    end
  end

View
  <% form_for :options, :url => filter_search_path do |f| %>
    <fieldset>
      <ul>
        <li><h4>Functionality</h4>
          <ul>
            <li>
              <%= f.check_box :blogging, filter_status("blogging") %>
              <label for="options_blogging">Blog</label>
            </li>
            <li>
              <%= f.check_box :chat, filter_status("chat") %>
              <label for="options_chat">Chat</label>
            </li>
            <li>
              <%= f.check_box :classifieds, filter_status("classifieds") %>
              <label for="options_classifieds">Classifieds</label>
            </li>
            <li>
              <%= f.check_box :forum, filter_status("forum") %>
              <label for="options_forum">Forum</label>
            </li>
            <li>
              <%= f.check_box :calendar, filter_status("calendar") %>
              <label for="options_calendar">Events calendar</label>
            </li>
            <li>
              <%= f.check_box :links, filter_status("links") %>
              <label for="options_links">Link management</label>
            </li>
            <li>
              <%= f.check_box :gallery, filter_status("gallery") %>
              <label for="options_gallery">Photo gallery</label>
            </li>
            <li>
              <%= f.check_box :search, filter_status("search") %>
              <label for="options_search">Search Engine</label>
            </li>
            <li>
              <%= f.check_box :rss, filter_status("rss") %>
              <label for="options_rss">RSS</label>
            </li>
          </ul>
        </li>
      </ul>
    </fieldset>
    <fieldset class="submit">
      <input type="submit" class="button" id="filter" value="Filter" name="" />
    </fieldset>
  <% end %>

Config/routes.rb

map.filter_search '/systems/filter_search', :controller => 'systems', :action => 'filter_search'
    map.filter '/systems/filter/:id', :controller => 'systems', :action => 'filter', :id => nil