CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3ruby-on-rails-3.1
hilarl
hilarl

Reputation: 6880

Trying to filter a key in a nested hash inside an array

i have the following array:

[#<PatchedOpenStruct name="Kristen Stewart", id="162655167", characters=["Snow White"]>, #<PatchedOpenStruct name="Chris Hemsworth", id="770829335", ch
aracters=["The Huntsman"]>, #<PatchedOpenStruct name="Charlize Theron", id="162654733", characters=["The Queen"]>, #<PatchedOpenStruct name="Viggo Mort
ensen", id="162654541">, #<PatchedOpenStruct name="Sam Claflin", id="771073196", characters=["Prince"]>]

i am trying to filter all the 'name' fields from this. any help?

Upvotes: 0

Views: 996

Answers (2)

mu is too short
mu is too short

Reputation: 434615

If you just want to extract all the names, use collect (or its map alias) to call the name method on each element of the array and collect the results in another array:

names = a.collect(&:name)

Upvotes: 2

philosodad
philosodad

Reputation: 1808

Two ways I can think of to do this if these were standard OpenStructs.

array_of_things.collect{|each_thing| each_thing.name} returns an array of all the names of all the things. array_of_things.select{|each_thing| each_thing.name =~ /Kristen/} returns an array of things with names that match the expression /Kristen/.

Upvotes: 2

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