Class: HackerNews::NewsItem

Inherits:
Object
  • Object
show all
Defined in:
lib/hnruby/newsitem.rb

Overview

Represents a story on HN— access more or less all information about it

Since this class’s constructor takes bits of raw html, it’s not meant to be accessed except via the HackerNews::StoryList module:

news_item = HackerNews::StoryList[1]\
#=> "Profitless Prosperity" <article: 6622394>

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(article_raw, meta_raw) ⇒ NewsItem

:stopdoc:



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# File 'lib/hnruby/newsitem.rb', line 35

def initialize(article_raw, meta_raw)
  article = article_raw / "td"
  meta = meta_raw / "td"

  @number = article.first.content.to_i
  @url = article[2].at("a").attributes["href"].value
  @url.prepend(HN_URL) if url.start_with? "item?id="
  @title = article[2].children.first.content

  if meta.children.length == 5
    #This is a normal article
    @points       = meta[1].children.first.content.to_i
    @submitter    = meta[1].children[2].content
    @time         = meta[1].children[3].content.delete("|").strip
    @comment_url  = meta[1].children[4].attributes["href"].value
    @comments     = meta[1].children[4].content.to_i
  else
    #This, by contrast, is a job offer, which lacks all meta-info aside
    #from submission time
    @time = meta[1].content
  end
end

Instance Attribute Details

#comments ⇒ Object (readonly)

Returns the number of comments the story currently has. If self is a job offer, returns nil.



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# File 'lib/hnruby/newsitem.rb', line 32

def comments
  @comments
end

#number ⇒ Object (readonly)

Returns self‘s rank on Hacker News at the time self was created.



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# File 'lib/hnruby/newsitem.rb', line 14

def number
  @number
end

#points ⇒ Object (readonly)

Returns the number of points the story has, or had at the time self was created.

If self is a job offer, returns nil.



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# File 'lib/hnruby/newsitem.rb', line 23

def points
  @points
end

#submitter ⇒ Object (readonly)

Returns the username of the story’s submitter. If self is a job offer, returns nil.



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# File 'lib/hnruby/newsitem.rb', line 26

def submitter
  @submitter
end

#time ⇒ Object (readonly)

Returns the (as a string) how long ago the comment was submitted.

nitem.time  #=> "5 minutes ago"



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# File 'lib/hnruby/newsitem.rb', line 29

def time
  @time
end

#title ⇒ Object (readonly)

Returns the story’s title.



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# File 'lib/hnruby/newsitem.rb', line 18

def title
  @title
end

#url ⇒ Object (readonly)

Returns the story’s URL.



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# File 'lib/hnruby/newsitem.rb', line 16

def url
  @url
end

Instance Method Details

#article? ⇒ Boolean

Returns true if self is an article (with points, comments, etc.).



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# File 'lib/hnruby/newsitem.rb', line 60

def article?
  !@points.nil?
end

#comment_page ⇒ Object

Returns the CommentPage corresponding to self.

If self is a job offer, returns nil.

news_item.comment_page\
#=> "Amazon and the "profitless business model" fallacy" <21 comments>



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# File 'lib/hnruby/newsitem.rb', line 87

def comment_page
  @comment_page ||= CommentPage.new comment_url if @comment_url
end

#comment_url ⇒ Object

Returns the URL to the story’s comment page. On self-posts, this will be equivalent to url.

news_item.comment_url\
#=> "https://news.ycombinator.com/item?id=6620598"



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# File 'lib/hnruby/newsitem.rb', line 79

def comment_url
  "#{HN_URL}#{@comment_url}" if @comment_url
end

#inspect ⇒ Object

:nodoc:



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# File 'lib/hnruby/newsitem.rb', line 92

def inspect
  "\"#{@title}\" <#{@category}: #{@comment_url[8..-1]}>"
end

#joboffer? ⇒ Boolean

Returns true if self is a job offer (without points, comments, etc.).



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# File 'lib/hnruby/newsitem.rb', line 65

def joboffer?
  @points.nil?
end

#submitter_url ⇒ Object

Returns the URL to the HN profile of the submitter.

news_item.submitter_url #=> "https://news.ycombinator.com/user?id=user"



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# File 'lib/hnruby/newsitem.rb', line 71

def submitter_url
  "#{HN_URL}user?id=#{@submitter}" if @submitter
end