Undefined 'retrieve_company_info' method error for ticker string in RapidAPI integration

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1

My Rails app triggers an error by calling a class method on a ticker string. The code sample below demonstrates a revised implementation:

class Equity < ApplicationRecord
  validates :code, uniqueness: true

  def self.retrieve_company_info(query)
    response = HTTP.get("https://api.example.com/stock/#{query}/details", headers: { "API-Key" => "secret" })
    data = response.parse
    create(code: data["ticker"], name: data["companyName"])
  end
end

class EquitiesController < ApplicationController
  def lookup
    ticker = params[:ticker]
    Equity.retrieve_company_info(ticker) if ticker.present?
  end
end
2

i think the issue might be that the ticker string isn’t being converted before method call. try wrapping or converting the string into an object before calling retrieve_company_info. small typo like that can mess up your logic in these setups.

3

During a similar issue in one of my projects, I realized that sometimes the root cause was not solely about converting the ticker string but how the parameter was being handled across the controller and model layers. In one case, my method was inadvertently being called on an unprocessed input because of a mix-up with naming conventions and refactoring. After thorough debugging, I focused on validating the input before invoking the API call, adding explicit error handling for unexpected API responses. This both resolved the undefined method error and improved the overall robustness of my code.

4

I dealt with a similar issue a while back. I found that the problem was due to passing a raw string to a method that expected a different kind of parameter. In my case, I had to either instantiate an object from the string or change the design so that the input was managed appropriately. I eventually refactored the code to ensure that the string was properly cast to an object before calling any methods on it, which resulted in a more robust and maintainable solution.

5

The error you are encountering may be due to a mix-up in device roles between strings and objects rather than a true method resolution issue. I suggest checking that the input is being handled correctly at every level. The retrieval design should initially validate the ticker to ensure it matches the expected format, and once verified, it may be beneficial to convert the ticker into an object format before processing. Additionally, wrapping the API response in a safety check can prevent further issues. In my experience, explicit type-checking helped prevent runtime errors encountered on production.