Retrieve data using for loop in Ruby -

i have question using foreach loops in ruby.

i want display documents , using foreach loop in order display these documents. returns error i variable inside of data["response"]["docs"][i]["topic"] json string iterating over.

i not understand why is. can tell me doing wrong?

if data["response"]["docs"][0]["topic"] works fine not i. why that?

<% (0..10).each |i| %> <%= %> <br/> <%= data["response"]["docs"][i]["topic"] %>  <% end %> 

my question is, how many items there in data["response"]["docs"]? there 11? either way use following code instead:

<% data["response"]["docs"].each_with_index |item, index| %> <%= index %>  <br/> <%= item["topic"] %>  <% end %> 

this iterates on data["response"]["docs"] no matter how many there (whether is 1 doc or 20 docs) , stores value in variable named item. each_with_index function gives index well, stored in index, can display later. if want first 11 use:

<% data["response"]["docs"].first(11).each_with_index |item, index| %> 

this grab maximum of 11 doc items.