CODEWITHSUNDEEP
rubydata-structures
cynewulf
cynewulf

Reputation: 180

Extract a value from an OpenStruct Ruby object

I get the following Ruby object returned (from a query to the Google Analytics API using the garb gem, comes from the sample call shown on the README.md there, Exits.results(profile, :filters => {:page_path.eql => '/'}))

> data.results
=> [#<OpenStruct page_path="/", exits="3706", pageviews="10440">]

I'd to extract the pageviews value (10440), but cannot figure out how to do it. I see that my object, data.results is class array of length 1, but data.first is class OpenStruct with a return value that looks almost identical:

irb(main):140:0> data.results.class
=> Array
irb(main):141:0> data.results.length
=> 1
irb(main):142:0> data.first
=> #<OpenStruct page_path="/", exits="3706", pageviews="10440">
irb(main):143:0> data.first.class
=> OpenStruct

while data itself seems to be a custom return type called ResultsSet: 

irb(main):144:0> data.class
=> Garb::ResultSet
irb(main):145:0> data
=> #<Garb::ResultSet:0x00000002411070 @results=[#<OpenStruct page_path="/", exits="3706", pageviews="10440">], @total_results=1, @sampled=false>
irb(main):146:0>

Lots of data structures, but no idea how to get my desired value out. I gathered OpenStruct was related to a hash, so I thought data.first["pageviews"] would do it, 

NoMethodError: undefined method `[]' for #<OpenStruct page_path="/", exits="3706", pageviews="10440">
    from (irb):146
    from /usr/bin/irb:12:in `<main>'

Meanwhile data.first.keys returns nil. No idea how to get my data out, (short of converting the length-1 array, data.results to a string and parsing with grep, which seems crazy. Any ideas?

Upvotes: 4

Views: 2469

Answers (1)

Yossi
Yossi

Reputation: 12090

Please try this:

data.first.pageviews

Upvotes: 4

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