docbrown/app/models/html_variant.rb
rhymes 34848a4209
Upgrade Rubocop to 0.81 (#7219)
* Upgrade rubocop to 0.81.0

* Reordered rubocop file and updated it

* Regenerate todo

* Correct some things

* Fix specs
2020-04-11 10:10:04 +02:00

93 lines
2.8 KiB
Ruby

class HtmlVariant < ApplicationRecord
include CloudinaryHelper
GROUP_NAMES = %w[article_show_sidebar_cta article_show_below_article_cta badge_landing_page campaign].freeze
validates :html, presence: true
validates :name, uniqueness: true
validates :group, inclusion: { in: GROUP_NAMES }
validates :success_rate, presence: true
validate :no_edits
belongs_to :user, optional: true
has_many :html_variant_trials
has_many :html_variant_successes
before_save :prefix_all_images
scope :relevant, -> { where(approved: true, published: true) }
def calculate_success_rate!
self.success_rate = html_variant_successes.size.to_f / (html_variant_trials.size * 10.0) # x10 because we only capture every 10th
save!
end
class << self
def find_for_test(tags = [], group = "article_show_sidebar_cta")
tags_array = tags + ["", nil]
if rand(10) == 1 # 10% return completely random
find_random_for_test(tags_array, group)
else # 90% chance return one in top 10
find_top_for_test(tags_array, group)
end
end
private
def find_top_for_test(tags_array, group)
where(group: group, approved: true, published: true, target_tag: tags_array).
order("success_rate DESC").limit(rand(1..15)).sample
end
def find_random_for_test(tags_array, group)
where(group: group, approved: true, published: true, target_tag: tags_array).
order(Arel.sql("RANDOM()")).first
end
end
private
def no_edits
return if group == "campaign"
published_and_approved = (approved && (html_changed? || name_changed? || group_changed?)) && persisted?
errors.add(:base, "cannot change once published and approved") if published_and_approved
end
def prefix_all_images
# wrap with Cloudinary or allow if from giphy or githubusercontent.com
doc = Nokogiri::HTML.fragment(html)
doc.css("img").each do |img|
src = img.attr("src")
next unless src
next if allowed_image_host?(src)
img["src"] = if Giphy::Image.valid_url?(src)
src.gsub("https://media.", "https://i.")
else
img_of_size(src, 420)
end
end
self.html = doc.to_html
end
def allowed_image_host?(src)
src.start_with?("https://res.cloudinary.com/")
end
def img_of_size(source, width = 420)
quality = if source && (source.include? ".gif")
66
else
"auto"
end
cl_image_path(source,
type: "fetch",
width: width,
crop: "limit",
quality: quality,
flags: "progressive",
fetch_format: "auto",
sign_url: true).gsub(",", "%2C")
end
end