Iterating through JSON data from external API in Rails

Question

I have a function return_summoner_champion_list(name) that will return the following JSON data when called

[
  {
    "id"=>"1",
    "name"=>"A"
  },
  {
    "id"=>"2",
    "name"=>"B"
  },
  and so on...
]

How do I iterate through the JSON array and print out all ids?

I tried

return_summoner_champion_list(name).each do |list|
  puts list["id"]
end

but it still returns the same JSON data as above without any changes.

That's not JSON, that's an array of hashes. Iterate through it like you would an array. — the Tin Man
– the Tin Man, Commented Jul 16, 2015 at 21:44

the Tin Man · Accepted Answer · 2015-07-16 21:44:44Z

1

I think you're looking for Array#collect not Array#each:

return_summoner_champion_list(name).collect{|l| l['id']}
=> [1,2, ...]

edited Jul 16, 2015 at 21:44

the Tin Man

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answered Jul 16, 2015 at 21:01

Hesham

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Comments

the Tin Man · Accepted Answer · 2015-07-16 21:45:03Z

0

Is your method returning JSON or an Ruby array? If it is indeed returning JSON, first convert that to an array with JSON.parse(), and then work with the array that is returned.

edited Jul 16, 2015 at 21:45

the Tin Man

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answered Jul 16, 2015 at 21:07

bkahler

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