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Debugging rails

Avatar for Michał Brodecki Michał Brodecki
October 24, 2016
Programming
24
0

Debugging rails

Avatar for Michał Brodecki

Michał Brodecki

October 24, 2016

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Transcript

  1. Jak szybko namierzać bugi 
 w aplikacjach czyli o debugowaniu

    słów kilka Michał Brodecki twitter: @brodeone email: [email protected]

  2. Bug się rodzi … Historia w kilku gifach

  3. None
  4. None
  5. None
  6. None
  7. None
  8. None
  9. None
  10. None
  11. None

  12. Jak sobie z tym radzić?

  13. None

  14. Źródła bugów Twój kod Czyjś kod

  15. Twój kod

  16. Rails tools

  17. puts, inspect,

  18. pry

  19. Async jobs, serwery produkcyjne, log level

  20. None
  21. None

  22. Github

  23. None

  24. Top 3 error messages

  25. NoMethodError: undefined method `favourite?' for nil:NilClass User.post.favourite.filter

  26. ArgumentError: wrong number of arguments (given 3, expected 1..2) User.vote(post,

    grade, true)

  27. myHash.each{|item| item[:street]} TypeError: no implicit conversion of Symbol into Integer

  28. Podsumowanie: Bądź cierpliwy Czasem szukanie błędu może zająć dużo czasu

    Nie daj się pokonać
  29. None