从Rails中的外部API遍历JSON数据

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.

Answer 1

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

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

Answer 2

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.