181 lines
3.7 KiB
Ruby
181 lines
3.7 KiB
Ruby
class Story < ActiveRecord::Base
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belongs_to :user
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has_many :taggings
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has_many :comments
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has_many :tags, :through => :taggings
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validates_length_of :title, :in => 3..150
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validates_length_of :description, :maximum => (64 * 1024)
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validates_format_of :url, :with => /\Ahttps?:\/\//i,
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:allow_blank => true
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validates_presence_of :user_id
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attr_accessible :url, :title, :description, :story_type, :tags_a
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# after this many minutes old, a story cannot be edited
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MAX_EDIT_MINS = 30
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attr_accessor :vote, :story_type, :already_posted_story
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attr_accessor :tags_to_add, :tags_to_delete
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after_save :deal_with_tags
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before_create :assign_short_id
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validate do
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if self.url.present?
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# URI.parse is not very lenient, so we can't use it
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if self.url.match(/\Ahttps?:\/\/[^\.]+\.[a-z]+\//)
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if (s = Story.find_by_url(self.url)) &&
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(Time.now - s.created_at) < 30.days
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errors.add(:url, "has already been submitted recently")
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self.already_posted_story = s
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end
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else
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errors.add(:url, "is not valid")
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end
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end
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end
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def assign_short_id
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(1...10).each do |tries|
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if tries == 10
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raise "too many hash collisions"
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end
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self.short_id = Utils.random_str(6)
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if !Story.find_by_short_id(self.short_id)
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break
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end
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end
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end
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def deal_with_tags
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(self.tags_to_delete || []).each do |t|
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if t.is_a?(Tagging)
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t.destroy
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elsif t.is_a?(Tag)
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self.taggings.find_by_tag_id(t.id).try(:destroy)
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end
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end
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(self.tags_to_add || []).each do |t|
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if t.is_a?(Tag)
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tg = Tagging.new
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tg.tag_id = t.id
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tg.story_id = self.id
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tg.save
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end
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end
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self.tags_to_delete = []
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self.tags_to_add = []
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end
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def comments_url
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"/p/#{self.short_id}/#{self.title_as_url}"
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end
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@_comment_count = nil
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def comment_count
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@_comment_count ||=
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Keystore.value_for("story:#{self.id}:comment_count").to_i
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end
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def domain
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if self.url.blank?
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nil
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else
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pu = URI.parse(self.url)
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pu.host.gsub(/^www\d*\./, "")
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end
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end
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UP_RANGE = 400
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DOWN_RANGE = 100
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def hotness
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score = upvotes - downvotes
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order = Math.log([ score.abs, 1 ].max, 10)
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if score > 0
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sign = 1
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elsif score < 0
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sign = -1
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else
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sign = 0
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end
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seconds = self.created_at.to_i - 398995200
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return -(order + (sign * (seconds.to_f / 45000))).round(7)
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end
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def linkified_text
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Markdowner.markdown(self.description)
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end
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def tags_a
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tags.map{|t| t.tag }
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end
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def tags_a=(new_tags)
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self.tags_to_delete = []
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self.tags_to_add = []
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self.tags.each do |tag|
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if !new_tags.include?(tag.tag)
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self.tags_to_delete.push tag
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end
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end
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new_tags.each do |tag|
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if tag.to_s != "" && !self.tags.map{|t| t.tag }.include?(tag)
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if t = Tag.find_by_tag(tag)
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self.tags_to_add.push t
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end
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end
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end
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end
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def title=(t)
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# change unicode whitespace characters into real spaces
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self[:title] = t.strip
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end
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def title_as_url
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u = self.title.downcase.gsub(/[^a-z0-9_-]/, "_")
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while self.title.match(/__/)
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self.title.gsub!("__", "_")
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end
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u
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end
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def url_or_comments_url
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self.url.blank? ? self.comments_url : self.url
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end
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def is_editable_by_user?(user)
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if !user || user.id != self.user_id
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return false
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end
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(Time.now.to_i - self.created_at.to_i < (60 * MAX_EDIT_MINS))
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end
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def is_undeletable_by_user?(user)
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if !user || user.id != self.user_id
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return false
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end
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true
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end
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def update_comment_count!
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Keystore.put("story:#{self.id}:comment_count",
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Comment.where(:story_id => self.id).count)
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end
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def flag!
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Story.update_counters self.id, :flaggings => 1
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end
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end
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