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ruby-on-rails - 循环访问来自 Flickr 的 API 结果

转载 作者:数据小太阳 更新时间:2023-10-29 07:34:08 26 4
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我真的很难让它工作。

我正在查询 Flickr API,它返回了一组数组和散列,我可以通过循环向我的应用程序添加数据。

我已经开始编写一些代码来迭代 API 结果以创建集合。虽然它一直失败,但想知道你们中是否有人可以看到我是否以正确的方式进行此操作或发现我做错了什么:

  def self.add_collection(collection)
puts "Adding collection..."
Collection.create!({
:flickr_id => collection['id'],
:title => collection['title'],
:description => collection['description']
})
puts "Added collection."
end


def self.add_all
tree = Flickr.collections_list
pp tree
puts "Got response from Flickr"
tree.each do |c|
c[1].each do |c|
add_collection(c)
if c["collection"]
add_collection(c['collection'][0])
end
end
end
end

我的 API 结果是:

{"collections"=>
{"collection"=>
[{"id"=>"57928212-7215447632914033423",
"title"=>"site.co.uk",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"collection"=>
[{"id"=>"57928212-721457634949706778",
"title"=>"Holidays",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"collection"=>
[{"id"=>"57928212-724157634943457291",
"title"=>"Standard",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576289846181735",
"title"=>"Di-ip",
"description"=>"11th-13th May 2008 - (-W)"},
{"id"=>"7215-90497324306",
"title"=>"O-ay",
"description"=>
"August 2005 - (P- T)"},
{"id"=>"721576290947297760",
"title"=>"Iceland Holiday",
"description"=>
"5- 2004 - (N-)"}]},
{"id"=>"57928212-742157629691182748",
"title"=>"1 - W-09",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576296835355462",
"title"=>"D-er",
"description"=>""},
{"id"=>"721576294683541696",
"title"=>"D-rea",
"description"=>""},
{"id"=>"721576296843554852",
"title"=>"D-gdom",
"description"=>""},
{"id"=>"721576297104465912",
"title"=>"Day 4 - Gilr-walk",
"description"=>""},
{"id"=>"721576294710474644",
"title"=>
"Day 5 - Calif-uth",
"description"=>""},
{"id"=>"721576249710489442",
"title"=>"Day 6 - Si-untain",
"description"=>""},
{"id"=>"721576429834618028",
"title"=>
"Day 7 - Unive-za",
"description"=>""},
{"id"=>"721576249834637138",
"title"=>"Day 8 - Se-Park",
"description"=>""},
{"id"=>"721576249836419418",
"title"=>"Day 9 - Lego-Park",
"description"=>""},
{"id"=>"721576249851123596",
"title"=>"Day 10 - Kn-re City",
"description"=>""},
{"id"=>"721576298541700916",
"title"=>"Day 11 & 12 - Disn-sort",
"description"=>""},
{"id"=>"721576249851713058",
"title"=>"Day 13,14 & 15 - La-as",
"description"=>""}]},
{"id"=>"57928212-721547629866347760",
"title"=>"2 - Mi-10",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576294866337538",
"title"=>"Day 0 - Arr-rica",
"description"=>""},
{"id"=>"721576298468655454",
"title"=>"Day 1 - M-a",
"description"=>""},
{"id"=>"721576299707347598",
"title"=>"Day 2 - Adven-n",
"description"=>""},
{"id"=>"721576430011649024",
"title"=>"Day 3 - W-un",
"description"=>""},
{"id"=>"721576304034790528",
"title"=>"Day 4 - Sil-",
"description"=>""},
{"id"=>"721576300354520246",
"title"=>"Day 5 - St-eum",
"description"=>""},
{"id"=>"721576300443090072",
"title"=>"Day 6 - Si-uis",
"description"=>""},
{"id"=>"721576300443098290",
"title"=>"Day 7 - Ho-rld",
"description"=>""},
{"id"=>"721576300448416804",
"title"=>"Day 8 - Indi-ach",
"description"=>""},
{"id"=>"721576300448431390",
"title"=>"Day 9 - -ca",
"description"=>""},
{"id"=>"721457629997482351",
"title"=>
"Day 10 - Mount O-eads",
"description"=>""},
{"id"=>"721576304059600702",
"title"=>"Day 11 - Vall-",
"description"=>""}]},
{"id"=>"57928212-721457630658165668",
"title"=>"3 - Intim-010",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576341693409808",
"title"=>
"Day 1 - Gre-n City",
"description"=>""},
{"id"=>"721576306547898798",
"title"=>"Day 1 - C-s",
"description"=>""},
{"id"=>"721576306924436584",
"title"=>"Day 2 - -d",
"description"=>""},
{"id"=>"721547630699845912",
"title"=>"Day 3 - Ran-vities",
"description"=>""},
{"id"=>"721576304714758818",
"title"=>"Day 4 - Lo-urg",
"description"=>""},
{"id"=>"721576304717785454",
"title"=>"Day 5 - Bu-urg",
"description"=>""},
{"id"=>"721576304717785576",
"title"=>"Day 6 - Kin-ion",
"description"=>""}]},
{"id"=>"57928212-742157631693570817",
"title"=>"4 - Bes-12",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576316493011733",
"title"=>
"Day 0 - Early -orld Park",
"description"=>""},
{"id"=>"721576316934409808",
"title"=>
"Day 1 - Grea-ity",
"description"=>""},
{"id"=>"721576431698474564",
"title"=>"Day 2 - Shijin-rk",
"description"=>""},
{"id"=>"721576341703216195",
"title"=>
"Day 3 - Happ-rk",
"description"=>""},
{"id"=>"721574631713251068",
"title"=>"Day 4 - Victo-g",
"description"=>""},
{"id"=>"721576314761492087",
"title"=>"Day 5 - Floral-ark",
"description"=>""},
{"id"=>"721576318148565932",
"title"=>"Day 6 - H-du",
"description"=>""},
{"id"=>"721576318148581382",
"title"=>"Day -ry",
"description"=>""},
{"id"=>"721576318419272104",
"title"=>
"Day 8 - Ha-Park",
"description"=>""},
{"id"=>"721576314820243661",
"title"=>
"Day 9 - Sha-ruise",
"description"=>""},
{"id"=>"721574631872193783",
"title"=>
"Day 10 - Fisherma-ervatory",
"description"=>""},
{"id"=>"721574631874073880",
"title"=>
"Day 11- Gongqin-ark",
"description"=>""},
{"id"=>"721576318474794697",
"title"=>"Day 12 - Hap-ark",
"description"=>""},
{"id"=>"721576318940558319",
"title"=>"Day 13 - -",
"description"=>""},
{"id"=>"721576319544111677",
"title"=>
"Day 14 - G-World",
"description"=>""},
{"id"=>"721576319624210803",
"title"=>
"Day 15 - Chi-or",
"description"=>""},
{"id"=>"721576319628749339",
"title"=>
"Day 16 - Kn-rld",
"description"=>""},
{"id"=>"721576319751048564",
"title"=>"Day 17 - Ha-hen",
"description"=>""},
{"id"=>"721576319749243775",
"title"=>"Day 18 - O-eing",
"description"=>""},
{"id"=>"721576319765947399",
"title"=>"Day 19 - Dis-ong",
"description"=>""}]},
{"id"=>"57928212-721576434943433385",
"title"=>"5 - T-13",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576349908483894",
"title"=>"Day 1 - Tai-ng",
"description"=>""},
{"id"=>"721576349954099233",
"title"=>"Day 2 - -",
"description"=>""},
{"id"=>"721576350042484738",
"title"=>"Day 3 - J-orld",
"description"=>""},
{"id"=>"721576350594662914",
"title"=>
"Day 4 - For-t",
"description"=>""},
{"id"=>"721576350545445863",
"title"=>"Day 5-dise",
"description"=>""},
{"id"=>"721576352944144798",
"title"=>
"Day 6 - L-na",
"description"=>""}]},
{"id"=>"57928212-721576435094962919",
"title"=>"6 - Japan 2013",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576350944001201",
"title"=>"Day 1 - Fli-dium",
"description"=>""},
{"id"=>"721576350494923653",
"title"=>"Day 2 - Tok-a",
"description"=>""},
{"id"=>"721576350497502859",
"title"=>"Day 3 - Tobu Zoo",
"description"=>""},
{"id"=>"721576351430344700",
"title"=>"Day 4 - Uni-an",
"description"=>""},
{"id"=>"721457635131070810",
"title"=>"Day 5 - Hira-mple",
"description"=>""},
{"id"=>"721576351444725534",
"title"=>"Day 6 - Yo-adise",
"description"=>""},
{"id"=>"721576351454178145",
"title"=>"Day 7 - Nag-nd",
"description"=>""},
{"id"=>"721547635164257344",
"title"=>"Day 8 - Hok-oro",
"description"=>""},
{"id"=>"721576354182539619",
"title"=>"Day 9 - Ru-ort",
"description"=>""},
{"id"=>"721576351472948421",
"title"=>"Day 10 - Jo-ea",
"description"=>""},
{"id"=>"721576351894974362",
"title"=>"Day 11 - -d",
"description"=>""},
{"id"=>"721576352035465038",
"title"=>"Day 12- Tok-kitori",
"description"=>""},
{"id"=>"721576352574508275",
"title"=>"Day 13- To-a",
"description"=>""},
{"id"=>"721576352746739360",
"title"=>"Day 14 - Tok-ea",
"description"=>""},
{"id"=>"721576354268544001",
"title"=>"Day 15 - --ea",
"description"=>""}]}]},
{"id"=>"57928212-721574628668300643",
"title"=>"Days out",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"collection"=>
[{"id"=>"57928212-721457628668352769",
"title"=>"One off's",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576308409580828",
"title"=>"ChThisip",
"description"=>"Sun 29th July 2012 (Neil T, Mandy T)"},
{"id"=>"721576306394290306",
"title"=>"Blackpool - 8th Jul 2012",
"description"=>
"(Neil T, MThisS, Ben K)"},
{"id"=>"721576299940667113",
"title"=>
"Legoland Thisne 2010",
"description"=>"This)"},
{"id"=>"721576294405676947",
"title"=>"SkThisl 1)",
"description"=>""},
{"id"=>"721576294391564267",
"title"=>"Canal Boating",
"description"=>
"SunThismas)"},
{"id"=>"721576294391564197",
"title"=>"SThisert",
"description"=>
"12th Jul 2003 - (PeThisrk T)"},
{"id"=>"721576294391560887",
"title"=>"BThises",
"description"=>
" 29thThiss A)"},
{"id"=>"721576290848461747",
"title"=>"Go Karting 2012",
"description"=>" 28th Jan 2012 for Neil's birthday"},
{"id"=>"721576349284451987",
"title"=>
"SThis A)",
"description"=>""}]},
{"id"=>"57928212-721574628668280287",
"title"=>"Theme Parks",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"collection"=>
[{"id"=>"57928212-721457634949768308",
"title"=>"TThisrk",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576334256718298",
"title"=>
"TThisP)",
"description"=>""}]},
{"id"=>"57928212-721576429626109372",
"title"=>"PlThisl",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"7215762945459430821",
"title"=>"PThis11",
"description"=>"(Neil T, Rick M, Jackie DM)"}]},
{"id"=>"57928212-721576249991000745",
"title"=>"GuThisld",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576296244407020",
"title"=>"GThis011",
"description"=>
"(NeiThiseorge)"}]},
{"id"=>"57928212-721576294990999301",
"title"=>"FThisd",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576294625410346",
"title"=>"FlThis0",
"description"=>"(NThis)"}]},
{"id"=>"57928212-721457628668340547",
"title"=>"DrThisor",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576294638932742",
"title"=>"DraThis010",
"description"=>"(NThisW)"}]},
{"id"=>"57928212-721547628668287225",
"title"=>"AltThisrs",
"description"=>"",
"iconlarge"=>
"http://farm8.staticflickr.com/7024/cols/72157628668287225_190361d603_l.jpg",
"iconsmall"=>
"http://farm8.staticflickr.com/7024/cols/72157628668287225_190361d603_s.jpg",
"set"=>
[{"id"=>"721576328264334688",
"title"=>
"FebThis P)",
"description"=>""},
{"id"=>"721576306265468434",
"title"=>"Alt-ers - 15th Jul 2012",
"description"=>"(N-g A)"},
{"id"=>"721576303726416660",
"title"=>"A-n 2012",
"description"=>
"(NThis K)"},
{"id"=>"721576294666253333",
"title"=>"AThis2010",
"description"=>"(Thisl H)"},
{"id"=>"721576294990697063",
"title"=>"AThis10",
"description"=>"(This)"},
{"id"=>"721576299940655063",
"title"=>
"This008",
"description"=>"(NThis)"},
{"id"=>"721576429990712153",
"title"=>
"Event 2011 - 31st Oct-1st Nov 2011",
"description"=>"(This)"},
{"id"=>"721576295594429835",
"title"=>"This 29th-31st Oct 2009",
"description"=>"(ThisF)"},
{"id"=>"721576291947499268",
"title"=>
"Behi-l 2006",
"description"=>"(This)"},
{"id"=>"721576295411694365",
"title"=>"Day 2010 - 21st Jun 2010",
"description"=>"This)"}]}]}]},
{"id"=>"57928212-721457628985775057",
"title"=>"Yearly Events",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"collection"=>
[{"id"=>"57928212-721576429836230144",
"title"=>"This",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576299818309211",
"title"=>"Here StThisees",
"description"=>""},
{"id"=>"721576296173454860",
"title"=>"Thisats",
"description"=>""}]},
{"id"=>"57928212-721576258985777547",
"title"=>"Birthdays",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"7215762899995365613",
"title"=>"This12",
"description"=>""}]}]},
{"id"=>"57928212-721576298356236274",
"title"=>"Misc",
"description"=>"",
"iconlarge"=>"/images/collection_default_l.gif",
"iconsmall"=>"/images/collection_default_s.gif",
"set"=>
[{"id"=>"721576295511800621",
"title"=>"This",
"description"=>""},
{"id"=>"721576295391565747",
"title"=>"This",
"description"=>""}]}]}]},
"stat"=>"ok"}

在这方面我真的需要一些帮助。我认为这是数组和散列的多维方面,以及如何创建可以循环遍历它以添加集合的东西。我现在需要忽略这些集合。稍后将添加集合。

更新:

一直在玩这个,试图慢慢弄清楚散列的每个部分是什么,并具有以下内容:

  def self.add_all
tree = Flickr.collections_list['collections']
puts "Got response from Flickr"
tree.each do |c|
c.each do |d|
ap d.class
#add_collection(d)
end
end

当我运行它时,d.class 返回:

String < Object

Array < Object

我能否访问 Array 部分以便我可以继续迭代,因为我被告知我不能对 String 执行 .each(这是有道理的)。

有什么想法吗?

最佳答案

是的,这令人困惑。你需要知道的是

  1. 顶级集合数组位于tree["collections"]["collection"]
  2. 集合是带有每个属性键的散列(idtitledescription 等)
  3. 集合可能有一个名为collection(不是collection)的键,其值是一个子集合数组

现在,根据这些准则,我们可以编写代码来遍历树。我们递归调用 traverse_collection 来处理子集合。

def traverse_collection(collection)
Collection.create! :flickr_id => collection["id"],
:title => collection["title"],
:description => collection["description"]

if collection["collection"]
for child in collection["collection"]
traverse_collection child
end
end
end

for collection in Flickr.collections_list["collections"]["collection"]
traverse_collection collection
end

关于ruby-on-rails - 循环访问来自 Flickr 的 API 结果,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20689698/

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