在我的应用程序中,我有WebsiteAd
模型& website_ads
表格,其中包含我可以从我的管理员控制的所有网站广告。
目前,在一个页面中,我会针对每个广告向数据库进行1次查询,并在我的视图中查看该广告是否为active
。
在我的控制器中:
# START - Desktop ads
def ads_desktop_tablet
@header_desktop_tablet = ad_placement('header_desktop-tablet')
@footer_desktop_tablet = ad_placement('footer_desktop-tablet')
@footer_desktop_tablet_c = ad_placement('footer_desktop-tablet_C')
@desktop_tablet_b1 = ad_placement('desktop-tablet_B1')
@desktop_tablet_b2 = ad_placement('desktop-tablet_B2')
@desktop_tablet_b3 = ad_placement('desktop-tablet_B3')
@desktop_tablet_s1 = ad_placement('desktop-tablet_S1')
@desktop_inline_banner = ad_placement('desktop_inline_banner')
@desktop_inline_video = ad_placement('desktop_inline_video')
@desktop_tablet_b2_c = ad_placement('desktop-tablet_B2_C')
@desktop_tablet_b3_c = ad_placement('desktop-tablet_B3_C')
@desktop_tablet_s1_c = ad_placement('desktop-tablet_S1_C')
@desktop_tablet_l1 = ad_placement('desktop-tablet_L1')
end
# END - Desktop ads
# START - Mobile ads
def ads_mobile
@header_mobile = ad_placement('header_mobile')
@footer_mobile = ad_placement('footer_mobile')
@mobile_b1 = ad_placement('mobile_B1')
@mobile_b2 = ad_placement('mobile_B2')
@mobile_b3 = ad_placement('mobile_B3')
@mobile_s1 = ad_placement('mobile_S1')
@mobile_inline_banner = ad_placement('mobile_inline_banner')
@mobile_b3_c = ad_placement('mobile_B3_C')
end
# END - Mobile ads
在我的帮手中:
def ad_placement(placement)
WebsiteAd.where(placement: placement).first
end
# I have a method/`def` for each ad like below
def ad_desk_s1_active?
if desktop_tablet_s1.status == true
desktop_tablet_s1.ad_tag.html_safe
end
end
在我看来:
= ad_desk_s1_active?
我知道这不是一个好的做法和正确的方法。如何使这更高效,更少的代码和数据库查询?
答案 0 :(得分:3)
您可以使用index_by
@ads = WebsiteAd.all.index_by(&:placement)
或仅获取所需广告
placements = %w(header_mobile footer_mobile)
@ads = WebsiteAd.where(placement: placements).index_by(&:placement)
导致哈希
@header_mobile = @ads['header_mobile']
或直接在视图中使用@ads
<%= @ads['header_mobile'] %>