<?php
class UsersController extends AppController {
 
// ...snip...
// the rest of your code here
 
    public function downloadentries() {
 
        if($this->request->is('post')) {
            $this->loadModel('Member');
            $filename = "myfile.csv";
            $start_date = '2012-10-08 00:00:00';
            $end_date = '2012-10-08 23:59:59';
            $results = $this->Member->find('all', array(
                        'conditions' => array('Member.created >=' => $start_date, 
                                        'Member.created <=' => $end_date)
                    ));
 
            $csv_file = fopen('php://output', 'w');
 
            header('Content-type: application/csv');
            header('Content-Disposition: attachment; filename="'.$filename.'"');
 
            $header_row = array("id", "name", "email");
 
            fputcsv($csv_file,$header_row,',','"');
            foreach($results AS $result) {
                $row = array(
                $result['Member']['id'],
                $result['Member']['name'],
                $result['Member']['email']
                );
 
                fputcsv($csv_file,$row,',','"');
            }
            fclose($csv_file);
        }
        $this->layout = false;
        $this->render(false);
        return false;
    }
 
// ... more code here...
}

function custom_where($where,$query) {
  global $wpdb;
 
  $new_where = " /*my new where*/ $wpdb->postmeta.meta_value LIKE '%".get_search_query()."%'";
  if (empty($where))
    $where = $new_where;
  else
    $where = "{$where} /*OR*/  OR {$new_where}";
 
  return $where;
}

function search_distinct() {
  return "DISTINCT";
}

function custom_join($join) {
  global $wp_query, $wpdb;
  $join .= "INNER JOIN $wpdb->postmeta ON $wpdb->posts.ID = $wpdb->postmeta.post_id ";
  return $join;
}

function filter_search($query) {
    if ($query->is_search) {
      $query->set('post_type', array('post', 'recipes'));
      add_filter('posts_where','custom_where');
      add_filter('posts_join', 'custom_join');
      add_filter('posts_distinct', 'search_distinct');
    }
    //var_dump($query);
    return $query;
};
 
add_filter('pre_get_posts', 'filter_search');

<script language="javascript" type="text/javascript">
    function getOriginalWidthOfImg(img_element) {
        var t = new Image();
        t.src = (img_element.getAttribute ? img_element.getAttribute("src") : false) || img_element.src;
        return t.width;
    }
 
    function responsive_images () { 
        $(".responsive_img").each(function() {
            if(parseInt(getOriginalWidthOfImg(this)) >= parseInt($(window).width())) {
                $(this).attr("width","100%");
            } else {
                $(this).removeAttr("width");
            }
        });
    }
 
    $(window).load(function() {
        responsive_images();
        $(window).resize(function() {
            responsive_images();
        });
    });
 
</script>

{
  status: "ok",
  count: 2,
  count_total: 24,
  pages: 12,
  posts: [
    {<snipped - will contain the title, excerpt, date, etc.>},
    {<snipped - will contain the title, excerpt, date, etc.>}
  ]
}

<div id="ajax_content"></div>
<div class="row" id="loader">
  <div class="span12" style="text-align: center; margin-bottom: 20px;">
    <img src="<?php bloginfo('stylesheet_directory'); ?>/images/ajax-loader.gif" alt="" />
  </div>
</div>

<script language="javascript" type="text/javascript">
  page_number = 2; //starting with what page number? 
  template_directory = '<?php echo get_bloginfo("template_directory") ?>';
  unlocked = true; //this is to make sure we only load once
  $(window).scroll(function() {
    if($(window).scrollTop() + $(window).height() > $(document).height() - 100) {
      $("#loader").show();
      if (unlocked) {
        unlocked = false;
        $.ajax({
          type: "GET",
          url: "<?php echo get_bloginfo('url'); ?>/page/"+page_number+"",
          data: "json=1",
          success: function(data){
            console.log(data)
            page_number++;
            if (page_number <= data.pages) {
                $.each(data.posts, function(key, val) {
                  console.log(key+" > "+val.title)
                  $("#ajax_content").append(
                    '<div class="row">'+
                    '<div class="span12">'+
                    '<h2>'+
                    '<a href="'+val.url+'" rel="bookmark" title="Permanent Link to '+val.title+'">'+
                    val.title+
                    '</a>'+
                    '<p>'+val.excerpt+'</p>'+
                    '</div>'+
                    '</div>'
                  );
                });
            }
            $("#loader").hide();
            unlocked = true;
          }
        });
      }
    }
  });
</script>

gem "nested_form", :git => 'https://github.com/ryanb/nested_form.git'

class Allergy < ActiveRecord::Base
  validates :name, :presence => true
  has_many :attachments, :dependent => :destroy
  accepts_nested_attributes_for :attachments
end

class Attachment < ActiveRecord::Base
  belongs_to :allergy, :polymorphic => true #add polymorphic
  mount_uploader :attachment, AttachmentUploader
end

...
<%= nested_form_for [@patient, @allergy], :html => {:multipart => true} do |f| %> 
    <%= render :partial => "fields", :locals => {:f => f} %>
<% end %>
...

<%= f.fields_for :attachments do |attachment_form|  %>
  <div class="clearfix">
    <%= attachment_form.label :desc %>
    <%= attachment_form.text_field :desc %>
    <%= attachment_form.label :attachment %>
    <%= attachment_form.file_field :attachment %>
    <%= attachment_form.link_to_remove "Remove this attachment" %>
  </div>
<% end %>
<%= f.link_to_add "Add attachment", :attachments %>

def create
...
  @patient = Patient.find(params[:patient_id])
  if @allergy = @patient.allergies.create(params[:allergy])
    # success
  else
    # error handling
  end
end

wenbert@ubuntu:~/projects/rails/depot$ rails server
/home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.12/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.12/lib/execjs.rb:5:in `<module:ExecJS>'
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.12/lib/execjs.rb:4:in `<top (required)>'
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
	from /home/wenbert/.rvm/gems/ruby-1.9.2-p290/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in `require'
	from /home/wenber