CODEWITHSUNDEEP
rubyarraysparsinghash
Richard
Richard

Reputation: 6116

Ruby Parsing Hash

So I'm using a gem file to pull links from the front page of reddit. The gem function returns a hash containing ALL the links on the front page and all their info (# of comments, karma, author, date, link, ups, downs, etc). Below is a begging of the hash containg the information for the FIRST link on my front page:

{"modhash"=>"ubekfji9tr491ba98806d33ec78693dc157579335eb1ab283b", "children"=>[{"kind"=>"t3", "data"=>{"domain"=>"i.imgur.com", "banned_by"=>nil, "media_embed"=>{}, "subreddit"=>"pics", "selftext_html"=>nil, "selftext"=>"", "likes"=>nil, "link_flair_text"=>nil, "id"=>"1dt29e", "clicked"=>false, "title"=>"Our plumber in Italy put himself out there to ask us for help on his English homework :) Hope he passes his finals!", "media"=>nil, "score"=>3700, "approved_by"=>nil, "over_18"=>false, "hidden"=>false, "thumbnail"=>"http://b.thumbs.redditmedia.com/Fdid4luCfXah0bQ7.jpg", "subreddit_id"=>"t5_2qh0u", "edited"=>false, "link_flair_css_class"=>nil, "author_flair_css_class"=>nil, "downs"=>17890, "saved"=>false, "is_self"=>false, "permalink"=>"/r/pics/comments/1dt29e/our_plumber_in_italy_put_himself_out_there_to_ask/", "name"=>"t3_1dt29e", "created"=>1367893951.0, "url"=>"https://i.sstatic.net/DWZRf.jpg", "author_flair_text"=>nil, "author"=>"Junpha", "created_utc"=>1367865151.0, "distinguished"=>nil, "num_comments"=>553, "num_reports"=>nil, "ups"=>21590}},

That ending , seperates the next link which looks like this:

{"kind"=>"t3", "data"=>{"domain"=>"i.imgur.com", "banned_by"=>nil, "media_embed"=>{}, "subreddit"=>"funny", "selftext_html"=>nil, "selftext"=>"", "likes"=>nil, "link_flair_text"=>nil, "id"=>"1dt4xv", "clicked"=>false, "title"=>"What a beautiful, majestic.... oops", "media"=>nil, "score"=>2848, "approved_by"=>nil, "over_18"=>false, "hidden"=>false, "thumbnail"=>"http://a.thumbs.redditmedia.com/vkstE1PFr9iyYpux.jpg", "subreddit_id"=>"t5_2qh33", "edited"=>false, "link_flair_css_class"=>nil, "author_flair_css_class"=>nil, "downs"=>8128, "saved"=>false, "is_self"=>false, "permalink"=>"/r/funny/comments/1dt4xv/what_a_beautiful_majestic_oops/", "name"=>"t3_1dt4xv", "created"=>1367895955.0, "url"=>"https://i.sstatic.net/jzIqQ.gif", "author_flair_text"=>nil, "author"=>"themisc", "created_utc"=>1367867155.0, "distinguished"=>nil, "num_comments"=>279, "num_reports"=>nil, "ups"=>10976}},

I basically need someway to parse each entry of this hash so that I can store all the relevant stuff into an array. Really, I just want to store the "title" and "url" parts into an array. I tried something like this:

@red.get_listing().each do |x['title']|
    puts x
end

But i realized this is a hash of a hash..so I'm kinda lost as to how to parse this.

Upvotes: 1

Views: 9958

Answers (3)

corroded
corroded

Reputation: 21574

hash = {"modhash"=>"ubekfji9tr491ba98806d33ec78693dc157579335eb1ab283b", 
"children"=>[{"kind"=>"t3", "data"=>{"domain"=>"i.imgur.com", "banned_by"=>nil, "media_embed"=>{}, "subreddit"=>"pics", "selftext_html"=>nil, "selftext"=>"", "likes"=>nil, "link_flair_text"=>nil, "id"=>"1dt29e", "clicked"=>false, "title"=>"Our plumber in Italy put himself out there to ask us for help on his English homework :) Hope he passes his finals!", "media"=>nil, "score"=>3700, "approved_by"=>nil, "over_18"=>false, "hidden"=>false, "thumbnail"=>"http://b.thumbs.redditmedia.com/Fdid4luCfXah0bQ7.jpg", "subreddit_id"=>"t5_2qh0u", "edited"=>false, "link_flair_css_class"=>nil, "author_flair_css_class"=>nil, "downs"=>17890, "saved"=>false, "is_self"=>false, "permalink"=>"/r/pics/comments/1dt29e/our_plumber_in_italy_put_himself_out_there_to_ask/", "name"=>"t3_1dt29e", "created"=>1367893951.0, "url"=>"http://i.imgur.com/3xn1c8s.jpg", "author_flair_text"=>nil, "author"=>"Junpha", "created_utc"=>1367865151.0, "distinguished"=>nil, "num_comments"=>553, "num_reports"=>nil, "ups"=>21590}},{"kind"=>"t3", "data"=>{"domain"=>"i.imgur.com", "banned_by"=>nil, "media_embed"=>{}, "subreddit"=>"funny", "selftext_html"=>nil, "selftext"=>"", "likes"=>nil, "link_flair_text"=>nil, "id"=>"1dt4xv", "clicked"=>false, "title"=>"What a beautiful, majestic.... oops", "media"=>nil, "score"=>2848, "approved_by"=>nil, "over_18"=>false, "hidden"=>false, "thumbnail"=>"http://a.thumbs.redditmedia.com/vkstE1PFr9iyYpux.jpg", "subreddit_id"=>"t5_2qh33", "edited"=>false, "link_flair_css_class"=>nil, "author_flair_css_class"=>nil, "downs"=>8128, "saved"=>false, "is_self"=>false, "permalink"=>"/r/funny/comments/1dt4xv/what_a_beautiful_majestic_oops/", "name"=>"t3_1dt4xv", "created"=>1367895955.0, "url"=>"http://i.imgur.com/62q1jWN.gif", "author_flair_text"=>nil, "author"=>"themisc", "created_utc"=>1367867155.0, "distinguished"=>nil, "num_comments"=>279, "num_reports"=>nil, "ups"=>10976}}
]}


hash['children'].map { |child| child['data']['url'] }
hash['children'].map { |child| child['data']['title'] }

or if you want to use symbols (and are in rails)

hash.with_indifferent_access[:children].first[:data][:title]

Upvotes: 1

Shoe
Shoe

Reputation: 76240

You don't really need to parse them, just access its value:

hash[:data][:title]
hash[:data][:url]

Upvotes: 0

Logan Serman
Logan Serman

Reputation: 29880

hash[:children].each do |child|
  puts child[:title]
  puts child[:url]
end

Does that help?

Upvotes: 2

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