嵌套数组 ruby​​ TypeError：没有将哈希隐式转换为整数

Question

def get_att(webinar_id)
  finalArray = []
  api_service = ApiService.new
  response = api_service.get_attendees(webinar_id)
  json = JSON.parse(response.body)

  for x in json['_embedded']['attendeeParticipationResponses']
    first_name = json['_embedded']['attendeeParticipationResponses'][x]['firstName']
    last_name = json['_embedded']['attendeeParticipationResponses'][x]['lastName']
    email = json['_embedded']['attendeeParticipationResponses'][x]['email']
    finalArray << [first_name, last_name, email]
  end

  # x = 2
  # first_name = json['_embedded']['attendeeParticipationResponses'][x]['firstName']
  # last_name = json['_embedded']['attendeeParticipationResponses'][x]['lastName']
  # email = json['_embedded']['attendeeParticipationResponses'][x]['email']
  # finalArray << [first_name, last_name, email]

  Rails.logger.info(finalArray)
end

The idea is to return an array of arrays with all of the people and their 3 tags.

I know that the JSON parse data is working because the commented out code works perfectly and I can change x assignment and it runs. The for loop also works because it counts 15 responses in json['_embedded']['attendeeParticipationResponses'] when I add a counter. So I know the 15 people are there and I can add them one by one into the final array (which I got to hold multiple arrays by the way), but for some reason the second I put it in the for loop I get the weird error which fully reads:

TypeError: no implicit conversion of Hash into Integer from /Users/josh/Documents/GitHub/schools_health/lib/go_to_webinar/to_pipeline.rb:19:in `[]'

Answer 1

Never mind I fixed it! It was a syntax issue.

I come from more of a Java background and the loop syntax for ruby makes x an object. I thought it would contain the array index. I fixed it by changing the references inside the loop from:

first_name = json['_embedded']['attendeeParticipationResponses'][x]['firstName']

to:

first_name = x['firstName']