![WTFs
Member.first(:conditions => ["member_id LIKE #{params[:id]}"])](https://image.slidesharecdn.com/legacy-apps-120821022441-phpapp01/85/Having-fun-with-legacy-apps-10-320.jpg)
Having fun with legacy apps
- 1. Legacy Apps @mlomnicki The essence of dealing with legacy apps is to reduce the number of WTFs down to zero.
- 2. Legacy Apps Growing market.
- 3. There was an app... Almost 3 years under development 2 teams. 1st from UK, 2nd from India
- 4. tests there were some tests! (unit, controllers) over 100 out of 220 fail
- 5. git log fixes - 163 times fix - 144 times search - 52 times changes - 40 times final issues - 30 times
- 6. versions Rails 2.3.5 ruby 1.8 no bundler
- 7. WTFs (@club.secretary == current_member || @club.secretary == current_member)
- 8. WTFs <%= @payment.new_record? ? '' : '' %>
- 9. WTFs if some_condition else do_something
- 10. WTFs Member.first(:conditions => ["member_id LIKE #{params[:id]}"])
- 11. WTFs if @member.something == sth || @member.somethi ... elsif other_long_conditions ... else very_long_condition && looks_important ...
- 13. Everything is awful ruby code JS CSS plugins used
- 15. 1. Understand the app It is hard From the beginning you have to dive into every detail Bugs made by your predecessor become your bugs
- 16. 2. Tests BBQ heavy no factories or fixtures
- 17. 3. Code PORO + real unit tests Good Rails code Nothing fancy yet (no DCI, no usecases...)
- 18. 4. Upgrade It is all about plugins Moved them to lib and simplify Do you need them all?
- 19. Where is the fun?!
- 20. Removing code is fun 1799 files changed, 37303 insertions(+), 78770 deletions(-)
- 21. SPA migration is mega fun Realize the rails-way is legacy! It does not matter how old Rails you have
- 22. To fix or to rewrite? None is correct! SPA is the answer Otherwise your app is still legacy...
- 23. Profits Users - SPA enhances their experience Devs - SPA is better architecture
- 24. Time 80% in frontend app 20% in Rails
- 25. Gameboxed Engine It is the best thing since Rails Put pressure on Andrzej to open-source it
- 26. Mobile app soon Mobile is so easy now Thank you SPA
- 27. Q&A