Class: DcAdRenderer

Inherits:
Object
  • Object
show all
Includes:
DcApplicationHelper
Defined in:
app/renderers/dc_ad_renderer.rb

Overview

Ads renderer. Typically ads renderer is defined in design like this.

<div id="ads-on-top">
   <%= dc_render(:dc_ad, position: 'top') %>
</div>

There can be more than one ad shown on the same position. Therefore Ads can be grouped by position they are displayed at. Position name can be any string. I suggest using top, right …

Ads may be prioritized. Higher priority means higher probability that ad will be selected for display.

Clicks on picture and flash can be intercepted and are saved into dc_ad_stat table. It is also possible to limit number of times ad will be displayed or clicked.

Instance Attribute Summary

Attributes included from DcApplicationHelper

#design, #form, #ids, #json_ld, #menu, #menu_item, #options, #page, #page_title, #part, #parts, #record, #record_footer, #site, #tables

Instance Method Summary collapse

Methods included from DcApplicationHelper

#_origin, #dc_add2_record_cookie, #dc_add_json_ld, #dc_add_meta_tag, #dc_big_table, #dc_big_table_name_for_value, #dc_choices4, #dc_choices4_all_collections, #dc_choices4_folders_list, #dc_choices4_menu, #dc_choices4_site_policies, #dc_cms_menu, #dc_deprecate, #dc_document_path, #dc_dont?, #dc_edit_mode?, #dc_edit_title, #dc_error_messages_for, #dc_flash_messages, #dc_get_json_ld, #dc_get_link_canonical_tag, #dc_get_seo_meta_tags, #dc_get_site, #dc_icon_for_link, #dc_iframe_edit, #dc_img_alt, #dc_img_alt_tag, #dc_internal_var, #dc_limit_string, #dc_link_for_create, #dc_link_for_edit, #dc_link_for_edit1, #dc_link_menu_tag, #dc_link_to, #dc_menu_class, #dc_new_title, #dc_page_bottom, #dc_page_class, #dc_page_edit_menu, #dc_page_top, #dc_render, #dc_render_design, #dc_render_design_part, #dc_render_from_site, #dc_render_partial, #dc_replace_in_design, #dc_submit_tag, #dc_table_title, #dc_user_can_view, #dc_user_has_role, #dc_warning_messages_for, #decamelize_type

Constructor Details

#initialize(parent, opts = {}) ⇒ DcAdRenderer

Returns a new instance of DcAdRenderer.



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# File 'app/renderers/dc_ad_renderer.rb', line 45

def initialize( parent, opts={} ) #:nodoc:
  @parent = parent
  @opts   = opts
  @css    = ''
  self
end

Instance Method Details

#default ⇒ Object

Default method for rendering ads.



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# File 'app/renderers/dc_ad_renderer.rb', line 173

def default
  return '' if @parent.session[:is_robot] # don't bother if robot
  html = ''
  if (ad = find_ad_to_display)
# save to statistics, if not in cms
    if @opts[:edit_mode] < 1
      DcAdStat.create!(dc_ad_id: ad.id, ip: @parent.request.ip, type: 1 )
# save display counter  
      ad.displayed += 1
      ad.save
    end
    html << case ad.type
    when 1 then # picture
      picture_ad ad
    when 2 then # flash
      flash_ad ad
    when 3 then # script
      ad.script
    else
      'Error. Wrong ad type!'
    end
  end
  html
end

#find_ad_to_display ⇒ Object

Determines which add will be displayed next. Subroutine of default method.



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# File 'app/renderers/dc_ad_renderer.rb', line 120

def find_ad_to_display()
  ads = DcAd.where( dc_site_id: @parent.site._id, position: @opts[:position], active: true).to_a#, :valid_to.gt => Time.now, :valid_from.lt => Time.now).to_a
#p @opts, ads.size, '*-*-*-*'
  ads.delete_if { |ad| (ad.valid_to and ad.valid_to < Time.now) or 
                       (ad.valid_from and ad.valid_from > Time.now) or 
                       (ad.displays > 0 and ad.displayed >= ad.displays) or
                       (ad.clicks > 0 and ad.clicked >= ad.clicks) }
  return nil if ads.size == 0
# Determine ad to display, based on priority. This is of course not totaly accurate, 
# but it will have to do.
  sum = ads.inject(0) {|r, e| r += e.priority}
  rnd = Random.rand(sum)
  r = 0
  ads.each do |e|
    return e if rnd >= r and rnd < r + e.priority
    r += e.priority
  end
  ads.last # we really shouldn't be here
end

#find_ads_multi ⇒ Object

Finds ads that will be rendered. Subroutine of multi method.



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# File 'app/renderers/dc_ad_renderer.rb', line 55

def find_ads_multi() #:nodoc:
  ads = DcAd.where( position: @opts[:position], active: true).to_a#, :valid_to.gt => Time.now, :valid_from.lt => Time.now).to_a
#p @opts, ads.size, '*-*-*-*'
  ads.delete_if { |ad| (ad.valid_to and ad.valid_to < Time.now) or 
                       (ad.valid_from and ad.valid_from > Time.now) or 
                       (ad.displays > 0 and ad.displayed >= ad.displays) or
                       (ad.clicks > 0 and ad.clicked >= ad.clicks) }
                   
  ads
end

#flash_ad(ad) ⇒ Object

Code for flash ad.



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# File 'app/renderers/dc_ad_renderer.rb', line 143

def flash_ad(ad)
  click_tag = ad.link.to_s.size > 5 ? "flashvars=\"clickTag=#{ad.link}\"" : '' 
<<EOT
<div class="link_to_track" id="#{ad.id}">
  <object>
    <param name="wmode" value="transparent" />
    <embed width="#{ad.width}" height="#{ad.height}" src="#{ad.file}" #{click_tag}
           wmode=transparent allowfullscreen='true' allowscriptaccess='always' type="application/x-shockwave-flash"></embed>
  </object>
</div> 

<script type='text/javascript'>
$('##{ad.id}').mousedown(function (e){
    $.post('/dc_common/ad_click', { id: this.id });
    return true;
});
</script>     
EOT
end

#multi ⇒ Object

This is an experiment of how to render multiple ads on same location simultaneously by fade in and out div on which ad resides.



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# File 'app/renderers/dc_ad_renderer.rb', line 70

def multi
  return '' if @parent.session[:is_robot] # don't bother if robot
  html = "<div id='ad-#{@opts[:position]}-div'>"
  n = 0
  find_ads_multi.each do |ad|
    div = "ad-#{@opts[:position]}-#{n+=1}"
    html << "<div id='#{div}' style='position: absolute; display: none;'>"
    # all except first are hidden
#    html << n == 1 ? '>' : 'style="display: none;">'
    html << case ad.type
    when 1 then # picture
      picture_link ad
    when 2 then # flash
      flash_link ad
    when 3 then # script
      ad.script
    else
      'Error. Wrong ad type!'
    end
    html << '</div>'
  end
# 
  html << '</div>'
  if n > 0
    js = <<EOJS
  dc_ad_next_slide = function(div, index, max, timeout) {
    index = index + 1;
    div_show = div + index.toString();
    index_h = index - 1;
    if (index_h == 0) index_h = max;
    div_hide = div + index_h.toString();
    $('#' + div_show).fadeIn(1500);
    $('#' + div_hide).fadeOut(1500);

    if (index == max) index = 0; 
    setTimeout( function () { dc_ad_next_slide(div, index, max, timeout); }, timeout);
}

  $(document).ready(function () {
    dc_ad_next_slide("ad-#{@opts[:position]}-", 0, #{n}, 5000)
  });       
EOJS
  html << @parent.javascript_tag(js)
  end
  html
end

#picture_ad(ad) ⇒ Object

Code for picture ad.



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# File 'app/renderers/dc_ad_renderer.rb', line 166

def picture_ad(ad)
  @parent.link_to @parent.image_tag(ad.file), ad.link, id: ad.id, class: 'link_to_track', target: ad.link_target 
end

#render_css ⇒ Object

Render CSS. This method returns css part of code.



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# File 'app/renderers/dc_ad_renderer.rb', line 214

def render_css
  @css
end

#render_html ⇒ Object

Renderer dispatcher. Method returns HTML part of code.



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# File 'app/renderers/dc_ad_renderer.rb', line 201

def render_html
  method = @opts[:method] || 'default'
  html = if method and self.respond_to?(method)
    send(method)
  else
    "DcAdRenderer: method #{method} not defined!"
  end
  html  
end