I am using the Twitter Gem to access the Twitter API and I'd like to create a variable that only stores mentions that are unique, based on the text of the mention.
Right now, I'm storing all mentions like so: #allmentions = Twitter.mentions_timeline
This is an example of a mention returned for #allmentions[0]
=> #<Twitter::Tweet:0x007fbffb59ab88 #attrs={:created_at=>"Mon Dec 10 01:28:11 +0000 2012", :id=>277947788216639488, :id_str=>"277947788216639488", :text=>"#person hi", :source=>"web", :truncated=>false, :in_reply_to_status_id=>nil, :in_reply_to_status_id_str=>nil, :in_reply_to_user_id=>11739102, :in_reply_to_user_id_str=>"11739102", :in_reply_to_screen_name=>"person", :user=>{:id=>1000628702, :id_str=>"1000628702", :name=>"test account", :screen_name=>"testaccountso", :location=>"", :description=>"", :url=>nil, :entities=>{:description=>{:urls=>[]}}, :protected=>false, :followers_count=>0, :friends_count=>0, :listed_count=>0, :created_at=>"Mon Dec 10 01:27:39 +0000 2012", :favourites_count=>0, :utc_offset=>nil, :time_zone=>nil, :geo_enabled=>false, :verified=>false, :statuses_count=>1, :lang=>"en", :contributors_enabled=>false, :is_translator=>false, :profile_background_color=>"C0DEED", :profile_background_image_url=>"http://a0.twimg.com/images/themes/theme1/bg.png", :profile_background_image_url_https=>"https://si0.twimg.com/images/themes/theme1/bg.png", :profile_background_tile=>false, :profile_image_url=>"http://a0.twimg.com/sticky/default_profile_images/default_profile_3_normal.png", :profile_image_url_https=>"https://si0.twimg.com/sticky/default_profile_images/default_profile_3_normal.png", :profile_link_color=>"0084B4", :profile_sidebar_border_color=>"C0DEED", :profile_sidebar_fill_color=>"DDEEF6", :profile_text_color=>"333333", :profile_use_background_image=>true, :default_profile=>true, :default_profile_image=>true, :following=>nil, :follow_request_sent=>false, :notifications=>nil}, :geo=>nil, :coordinates=>nil, :place=>nil, :contributors=>nil, :retweet_count=>0, :entities=>{:hashtags=>[], :urls=>[], :user_mentions=>[{:screen_name=>"person", :name=>"Person", :id=>1173910, :id_str=>"1173910", :indices=>[0, 6]}]}, :favorited=>false, :retweeted=>false}>
I can access the text of the mention like so: #allmentions[0].text
Is there a built-in ruby method (or an easy way) to let me store only the mentions that have a unique value in the text attribute?
Yes, you can call uniq with a block.
For example:
#allmentions.uniq {|m| m.text}
To answer my own question, I did a bit of research, and it seems like this would work:
no_dupes = $allmentions.uniq { |h| h[:text] }
Related
I have the following hash:
{"match"=>0, "reach"=>1, "safe"=>2, "undecided"=>3}
I want to change the order like below:
{"reach"=>1, "match"=>0, "safe"=>2, "undecided"=>3}
What is the most effective solution for this?
{"match"=>0, "reach"=>1, "safe"=>2, "undecided"=>3}
.slice("reach", "match", "safe", "undecided")
# => {"reach"=>1, "match"=>0, "safe"=>2, "undecided"=>3}
I'm trying to sort in descending order an array of photo objects from Flickr API based on the number of comments(count_comments) of each photo. I'm using the following code.
def rank_photos(photos)
photos.sort_by { |photo| photo.count_comments * -1 }
end
However I get the following error message.
*': negative argument (ArgumentError)
Here is what the Array looks like
[{"id"=>"38280904752", "owner"=>"131718287#N07",
"secret"=>"abe0b93180", "server"=>"4583", "farm"=>5,
"title"=>"IMG_3640", "ispublic"=>1, "isfriend"=>0, "isfamily"=>0,
"count_comments"=>"0", "tags"=>"washington post dc web women codeher17
dctech tech technology",
"url_m"=>"https://farm5.staticflickr.com/4583/38280904752_abe0b93180.jpg", "height_m"=>"333", "width_m"=>"500"}, {"id"=>"38312540901",
"owner"=>"131718287#N07", "secret"=>"7b6e6805d4", "server"=>"4568",
"farm"=>5, "title"=>"IMG_3458", "ispublic"=>1, "isfriend"=>0,
"isfamily"=>0, "count_comments"=>"0", "tags"=>"washington post dc web
women codeher17 dctech tech technology",
"url_m"=>"https://farm5.staticflickr.com/4568/38312540901_7b6e6805d4.jpg", "height_m"=>"500", "width_m"=>"333"}, {"id"=>"38281453252",
"owner"=>"131718287#N07", "secret"=>"438293cffd", "server"=>"4539",
"farm"=>5, "title"=>"IMG_3460", "ispublic"=>1, "isfriend"=>0,
"isfamily"=>0, "count_comments"=>"0", "tags"=>"washington post dc web
women codeher17 dctech tech technology",
"url_m"=>"https://farm5.staticflickr.com/4539/38281453252_438293cffd.jpg", "height_m"=>"333", "width_m"=>"500"}
Why is throwing this error?
count_comments is a string, so you should convert it to a number first. In the process you can also eliminate the multiplication altogether.
def rank_photos(photos)
photos.sort_by { |photo| -photo.count_comments.to_i }
end
I am trying to map an enumerator coming the the Twitter API. I can successfully map the entire enumerable using test.map(&:attrs) and I can map specific fields however when I try to map the id_str field I get a undefined method error. I can't figure out if my syntax is off or if there are other considerations.
Below is my sample code and output:
print "original output\n"
print test.map(&:attrs)
print "\n\nmap a few fields\n"
print test.map { |e| { id: e.id,
name: e.name,
screen_name: e.screen_name
}}
print "\n\nid_str seems to return a undefined method\n"
print test.map { |e| { id: e.id,
id_str: e.id_str,
name: e.name,
screen_name: e.screen_name
}}
Generates the following output:
original output
[{:id=>78194111, :id_str=>"78194111", :name=>"Chelsea Peretti", :screen_name=>"ChelseaVPeretti", :location=>"Los Angeles", :description=>"One of the greats!", :url=>"http://t.co/3rRz8qGpeW", :entities=>{:url=>{:urls=>[{:url=>"http://t.co/3rRz8qGpeW", :expanded_url=>"http://www.chelseaperetti.com", :
display_url=>"chelseaperetti.com", :indices=>[0, 22]}]}, :description=>{:urls=>[]}}, :protected=>false, :followers_count=>249943, :friends_count=>740, :listed_count=>4277, :created_at=>"Tue Sep 29 02:35:35 +0000 2009", :favourites_count=>33016, :utc_offset=>-28800, :time_zone=>"Pacific Time (US & Ca
nada)", :geo_enabled=>true, :verified=>true, :statuses_count=>14958, :lang=>"en", :status=>{:created_at=>"Mon Dec 09 00:40:48 +0000 2013", :id=>409845047744409600, :id_str=>"409845047744409600", :text=>"Really looking forward to spending half my life in an apple store", :source=>"<a href=\"http://tw
itter.com/download/iphone\" rel=\"nofollow\">Twitter for iPhone</a>", :truncated=>false, :in_reply_to_status_id=>nil, :in_reply_to_status_id_str=>nil, :in_reply_to_user_id=>nil, :in_reply_to_user_id_str=>nil, :in_reply_to_screen_name=>nil, :geo=>nil, :coordinates=>nil, :place=>nil, :contributors=>ni
l, :retweet_count=>13, :favorite_count=>77, :entities=>{:hashtags=>[], :symbols=>[], :urls=>[], :user_mentions=>[]}, :favorited=>false, :retweeted=>false, :lang=>"en"}, :contributors_enabled=>false, :is_translator=>false, :profile_background_color=>"022330", :profile_background_image_url=>"http://a0
.twimg.com/profile_background_images/777102099/405580aee5a6a6d3f4d608b5bc488149.jpeg", :profile_background_image_url_https=>"https://si0.twimg.com/profile_background_images/777102099/405580aee5a6a6d3f4d608b5bc488149.jpeg", :profile_background_tile=>true, :profile_image_url=>"http://pbs.twimg.com/pro
file_images/378800000812827132/fe8566998e61c0f3e1275af4953a22e9_normal.jpeg", :profile_image_url_https=>"https://pbs.twimg.com/profile_images/378800000812827132/fe8566998e61c0f3e1275af4953a22e9_normal.jpeg", :profile_banner_url=>"https://pbs.twimg.com/profile_banners/78194111/1382904580", :profile_l
ink_color=>"0084B4", :profile_sidebar_border_color=>"FFFFFF", :profile_sidebar_fill_color=>"C0DFEC", :profile_text_color=>"333333", :profile_use_background_image=>true, :default_profile=>false, :default_profile_image=>false, :following=>false, :follow_request_sent=>false, :notifications=>false}]
map a few fields
[{:id=>78194111, :name=>"Chelsea Peretti", :screen_name=>"ChelseaVPeretti"}]
id_str seems to return a undefined method
C:/RailsInstaller/AppCode/first attempt at graph.rb:142:in `block in <main>': undefined method `id_str' for #<Twitter::User:0x2b602f0> (NoMethodError)
from C:/RailsInstaller/AppCode/first attempt at graph.rb:141:in `map'
from C:/RailsInstaller/AppCode/first attempt at graph.rb:141:in `<main>'
Pretty new to playing with the Twitter API in Ruby myself, but it turns out that id_str isn't a method on the Ruby Twitter::User objects you're trying to enumerate over. Running a quick check on a particular one, say, test.first.methods will confirm this.
This means you can't access id_str with dot notation. It is however a key to the hashes returned by test.map(&:attrs) so you could amend your above code by doing this:
print test.map { |e| { id: e.attrs[:id],
id_str: e.attrs[:id_str],
name: e.attrs[:name],
screen_name: e.attrs[:screen_name]
}}
If you are dead set on using dot notation, you could easily convert each hash object into an OpenStruct like this:
friends = test.map { |f| OpenStruct.new(f.attrs) }
Then you could simply do friends.map(&:id_str).
I think the confusion lies in your sample code above. In the first line, your output is an array of hashes. But what you are mapping over is an array of Twitter::User objects. The former has id_str as a key, but the latter does not have such a method.
I'm working to turn a pdf signature visible, using origami.pdf, and meanwhile I noticed that my signature is an hash, and so I try to capture fields like "Location", "Reason", "Date", "ContactInfo".
{/Type=>/Sig, /Contents=>"0\x82\a\xAE\x06\t*\x86H\x86\xF7\r\x01\a\x02\xA0\x82\a\
x9F0\x82\a\x9B\x02\x01\x011\v0\t\x06\x05+\x0E\x03\x02\x1A\x05\x000#\x06\t*\x86H\
x86\xF7\r\x01\a\x01\xA0\x16\x04\x14\xEF8uEn1#\x11M\x95\xE4\xD7\x9C\xFE(\xCF\xB7\
x92\x01\xC2\xA0\x82\x05\x970\x82\x05\x930\x82\x04{\xA0\x03\x02\x01\x02\x02\x04Bo
\x93\x8C0\r\x06\t*\x86H\x86\xF7\r\x01\x01\x05\x05\x000>1\v0\t\x06\x03U\x04\x06\x
13\x02pt1\x150\x13\x06\x03U\x04\n\x13\fMULTICERT-CA1\x180\x16\x06\x03U\x04\x03\x
13\x0FMULTICERT-CA 020\x1E\x17\r130320170147Z\x17\r140320164736Z0\x81\xA51\v0\t\
x06\x03U\x04\x06\x13\x02PT1\x150\x13\x06\x03U\x04\n\x13\fMULTICERT-CA1\x160\x14\
x06\x03U\x04\v\x13\rCERTIPOR - RA1\x120\x10\x06\x03U\x04\v\x13\tCorporate1 0\x1E
\x06\x03U\x04\v\x13\x17ESCRITA INTELIGENTE LDA1\x180\x16\x06\x03U\x04\v\x13\x0FW
eb Application1\x170\x15\x06\x03U\x04\x03\x13\x0ERECIBOS ONLINE0\x81\x9F0\r\x06\
t*\x86H\x86\xF7\r\x01\x01\x01\x05\x00\x03\x81\x8D\x000\x81\x89\x02\x81\x81\x00\x
AC\xCE\xA4\x06\x901\xB5x\x89lE\rw\xC8<\x13\xDDu\xC6h\xBF'b6\x8D\xB0\xA0\xB1Y\e\x
18\x00\xE5\x8C\x1A\xCD\xBB%\xDA\x15P\x1A\xF91\xF9\xF6\xBA\xE0\xF8\xF6LH\x16\x86\
xE9Y\xDE\x00Z\xEC\x82\xB3=\r2fP7\xD1\x8B\xF3k\xF7|MVb\fB\xFB\xBA\x92\xD3\xFF9\x7
F\x9D\x83w\xFE\xAB\xBA\x93G\x8F\xCE\xF0\t!d\x83\xD3F\xAC\xCCv\xCA\x10\xC9\xB8e;\
x80\xB8\xF6\xEBI\xBD\x93\x89zC\xDF\x06-\r\x9E\xD3\x02\x03\x01\x00\x01\xA3\x82\x0
2\xB30\x82\x02\xAF0\v\x06\x03U\x1D\x0F\x04\x04\x03\x02\x03\xF808\x06\b+\x06\x01\
x05\x05\a\x01\x01\x04,0*0(\x06\b+\x06\x01\x05\x05\a0\x01\x86\x1Chttp://ocsp.mult
icert.com/ca0\x81\xE0\x06\x03U\x1D \x04\x81\xD80\x81\xD50M\x06\t+\x06\x01\x04\x0
1\xB0<\n\x020#0>\x06\b+\x06\x01\x05\x05\a\x02\x01\x162http://www.multicert.com/c
ps/multicert-ca-cps.html0\x81\x83\x06\v+\x06\x01\x04\x01\xB0<\n\x02\x88\x060t0r\
x06\b+\x06\x01\x05\x05\a\x02\x020f\x1Ed\x00h\x00t\x00t\x00p\x00:\x00/\x00/\x00w\
x00w\x00w\x00.\x00m\x00u\x00l\x00t\x00i\x00c\x00e\x00r\x00t\x00.\x00c\x00o\x00m\
x00/\x00c\x00p\x00/\x00m\x00u\x00l\x00t\x00i\x00c\x00e\x00r\x00t\x00-\x00c\x00a\
x00-\x001\x000\x003\x000\x00.\x00h\x00t\x00m\x00l0\x11\x06\t`\x86H\x01\x86\xF8B\
x01\x01\x04\x04\x03\x02\x04\xB00 \x06\x03U\x1D\x11\x04\x190\x17\x81\x15info#reci
bosonline.pt0\x82\x01\x01\x06\x03U\x1D\x1F\x04\x81\xF90\x81\xF60\x81\x9A\xA0\x81
\x97\xA0\x81\x94\x86/http://www.multicert.com/ca/multicert-ca-02.crl\x86aldap://
ldap.multicert.com/cn=MULTICERT-CA%2002,o=MULTICERT-CA,c=PT?certificateRevocatio
nList?base0W\xA0U\xA0S\xA4Q0O1\v0\t\x06\x03U\x04\x06\x13\x02pt1\x150\x13\x06\x03
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RT-CA1\x180\x16\x06\x03U\x04\x03\x13\x0FMULTICERT-CA 02\x02\x04Bo\x93\x8C0\t\x06
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x107\xE9\xF7M\xD7\xA3\x11MJ\xAF\x03\x0F\xFF\x8D:s\x84g\xB6\xD5o\xAF\xB0\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00", /Filter=>/Adobe.PPKMS, /SubFilter=>/adbe.pkcs7.sha1, /
ByteRange=>[0, 12883, 17081, 1098], /Location=>"Portugal", /ContactInfo=>"email#email.com", /Reason=>"Proof of Concept", /M=>"D:20130329223127Z00'00", /P
rop_Build=>{/Filter=>{/Name=>/Adobe.PPKMS, /R=>131101, /Date=>"2013-03-29 22:31:
27 +0000"}, /SigQ=>{/Preview=>false, /R=>131101}, /PubSec=>{/NonEFontNoWarn=>fal
se, /Date=>"2013-03-29 22:31:27 +0000", /R=>131101}, /App=>{/TrustedMode=>false,
/OS=>[/Win], /R=>458752, /Name=>/Exchange-Pro}}}
If i extract the keys (pdf.signature.keys) i get
/Type
/Contents
/Filter
/SubFilter
/ByteRange
/Location
/ContactInfo
/Reason
/M
/Prop_Build
Now, how do I reach the contents of these keys ?
I cannot simply do pdf.signature[/Location] , because ruby says it is a syntax error...
Any ideas?
I took a look at the source for origami-pdf, and it seems that the / prepending every key in that output is generated on-the-fly from Origami::Name.to_s. Also looking at its eql? definition it seems like it just compares it to the underlying string value. So this should work, have you tried it?
signature[Origami::Name.new('Location')]
As generating an Origami::Name object with /Location seems to be so hard, I solved this with a different approach :
location = pdf.signature[pdf.signature.keys[5]]
The Output returns Portugal, and this is the approach I will take, since the array's keys position are supposed to be static.
I would appreciate a more elegant solution though
I'm working with the Koala gem and the Facebook Graph API, and I want to break down the results I get for a users feed into separate variables for inserting into a mySQL database, probably using Active Record. Here is the code I have so far:
#token = Service.where(:provider => 'facebook', :user_id => session[:user_id]).first.token
#graph = Koala::Facebook::GraphAPI.new(#token)
#feeds = params[:page] ? #graph.get_page(params[:page]) : #graph.get_connections("me", "home")
And here is what #feeds looks like:
[{"id"=>"1519989351_1799856285747", "from"=>{"name"=>"April Daggett Swayne", "id"=>"1519989351"},
"picture"=>"http://photos-d.ak.fbcdn.net/hphotos-ak-ash4/270060_1799856805760_1519989351_31482916_3866652_s.jpg",
"link"=>"http://www.facebook.com/photo.php?fbid=1799856805760&set=a.1493877356465.2064294.1519989351&type=1", "name"=>"Mobile Uploads",
"icon"=>"http://static.ak.fbcdn.net/rsrc.php/v1/yx/r/og8V99JVf8G.gif", "type"=>"photo", "object_id"=>"1799856805760", "application"=>{"name"=>"Facebook for Android",
"id"=>"350685531728"}, "created_time"=>"2011-07-03T03:14:04+0000", "updated_time"=>"2011-07-03T03:14:04+0000"}, {"id"=>"2733058_10100271380562998", "from"=>{"name"=>"Joshua Ramirez",
"id"=>"2733058"}, "message"=>"Just posted a photo",
"picture"=>"http://platform.ak.fbcdn.net/www/app_full_proxy.php?app=124024574287414&v=1&size=z&cksum=228788edbab39cb34861aecd197ff458&src=http%3A%2F%2Fimages.instagram.com%2Fmedia%2F2011%2F07%2F02%2F2ad9768378cf405fad404b63bf5e2053_7.jpg",
"link"=>"http://instagr.am/p/G1tp8/", "name"=>"jtrainexpress's photo", "caption"=>"instagr.am",
"icon"=>"http://photos-e.ak.fbcdn.net/photos-ak-snc1/v27562/10/124024574287414/app_2_124024574287414_6936.gif", "actions"=>[{"name"=>"Comment",
"link"=>"http://www.facebook.com/2733058/posts/10100271380562998"}, {"name"=>"Like", "link"=>"http://www.facebook.com/2733058/posts/10100271380562998"}], "type"=>"link",
"application"=>{"name"=>"Instagram", "id"=>"124024574287414"}, "created_time"=>"2011-07-03T02:07:37+0000", "updated_time"=>"2011-07-03T02:07:37+0000"},
{"id"=>"588368718_10150230423643719", "from"=>{"name"=>"Eric Bailey", "id"=>"588368718"}, "link"=>"http://www.facebook.com/pages/Martis-Camp/105474549513998", "name"=>"Martis Camp",
"caption"=>"Eric checked in at Martis Camp.", "description"=>"Rockin the pool", "icon"=>"http://www.facebook.com/images/icons/place.png", "actions"=>[{"name"=>"Comment",
"link"=>"http://www.facebook.com/588368718/posts/10150230423643719"}, {"name"=>"Like", "link"=>"http://www.facebook.com/588368718/posts/10150230423643719"}],
"place"=>{"id"=>"105474549513998", "name"=>"Martis Camp", "location"=>{"city"=>"Truckee", "state"=>"CA", "country"=>"United States", "latitude"=>39.282813917575,
"longitude"=>-120.16736760768}}, "type"=>"checkin", "application"=>{"name"=>"Facebook for iPhone", "id"=>"6628568379"}, "created_time"=>"2011-07-03T01:58:32+0000",
"updated_time"=>"2011-07-03T01:58:32+0000", "likes"=>{"data"=>[{"name"=>"Mike Janes", "id"=>"725535294"}], "count"=>1}}]
I have looked around for clues on this, and haven't found it yet (but I'm still working on my stackoverflow-foo). Any help would be greatly appreciated.
That isn't a Ruby Hash, that's a fragment of a JSON string. First you need to decode into a Ruby data structure:
# If your JSON string is in json...
h = ActiveSupport::JSON.decode(json) # Or your favorite JSON decoder.
Now you'll have a Hash in h so you can access it like any other Hash:
array = h['data']
puts array[0]['id']
# prints out 1111111111_0000000000000
puts array[0]['from']['name']
# prints Jane Done