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Welcome


                        Legacy to Latest
                                   Kieran O'Shea

         kieran@kieranoshea.com • @kieranoshea • http://www.kieranoshea.com/


       "A number of small top-down case studies
       concerned with WordPress upgrades, bringing
       plugins up to date with the latest WordPress
       features and transforming legacy custom tables
       into latest custom posts"

Legacy to Latest                                                        Kieran O'Shea
About me


          Day job in the finance industry

          Open Source Work
             RouterTech

                Firmware for AR7 based routers

             WordPress Plugins

                Calendar




Legacy to Latest                              Kieran O'Shea
Introduction


        Why is considering legacy important?
        Basic overview of considerations

        Server

        Themes

        Plugins

        Freebies

        Questions




Legacy to Latest                          Kieran O'Shea
Blast from the past!


          Anyone remember this!?




Legacy to Latest                    Kieran O'Shea
One Step Solution


          WordPress upgrades are simple...




          Or are they?


Legacy to Latest                              Kieran O'Shea
Legacy is everywhere


          Enterprise takes the long view




Legacy to Latest                            Kieran O'Shea
Dependency hell?


          Upgrade errors from legacy are likely
              [kieran@server:~]$ sudo do-release-upgrade
              ...
              A unresolvable problem occurred while calculating the upgrade.

              This can be caused by:
              * Upgrading to a pre-release version of Ubuntu
              * Running the current pre-release version of Ubuntu
              * Unofficial software packages not provided by Ubuntu

          Proceed manually but be careful!


Legacy to Latest                                                               Kieran O'Shea
Themes


        Should work without much coaxing
        Beware of

           Modified default themes

           Deprecated functions

           Phantom features




Legacy to Latest                            Kieran O'Shea
Plugins


        Can break an upgrade
        Can be broken by an upgrade

        Deprecated functions

        Logging on & bug hunt

           WordPress Logging




Legacy to Latest                       Kieran O'Shea
Custom Posts


        Legacy plugins may over-use tables
        Post framework makes code simpler

        Expose plugin data

        Migration simplified




Legacy to Latest                         Kieran O'Shea
Freebies


          Deserve one after a tricky upgrade?




Legacy to Latest                             Kieran O'Shea
Questions?


            Test site, code & other goodies:
            https://wcuk.kieranoshea.com/




                    Kieran O'Shea • kieran@kieranoshea.com
                   @kieranoshea • http://www.kieranoshea.com/




Legacy to Latest                                                Kieran O'Shea

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Legacy to Latest

  • 1. Welcome Legacy to Latest Kieran O'Shea kieran@kieranoshea.com • @kieranoshea • http://www.kieranoshea.com/ "A number of small top-down case studies concerned with WordPress upgrades, bringing plugins up to date with the latest WordPress features and transforming legacy custom tables into latest custom posts" Legacy to Latest Kieran O'Shea
  • 2. About me  Day job in the finance industry  Open Source Work  RouterTech  Firmware for AR7 based routers  WordPress Plugins  Calendar Legacy to Latest Kieran O'Shea
  • 3. Introduction  Why is considering legacy important?  Basic overview of considerations  Server  Themes  Plugins  Freebies  Questions Legacy to Latest Kieran O'Shea
  • 4. Blast from the past!  Anyone remember this!? Legacy to Latest Kieran O'Shea
  • 5. One Step Solution  WordPress upgrades are simple...  Or are they? Legacy to Latest Kieran O'Shea
  • 6. Legacy is everywhere  Enterprise takes the long view Legacy to Latest Kieran O'Shea
  • 7. Dependency hell?  Upgrade errors from legacy are likely [kieran@server:~]$ sudo do-release-upgrade ... A unresolvable problem occurred while calculating the upgrade. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu  Proceed manually but be careful! Legacy to Latest Kieran O'Shea
  • 8. Themes  Should work without much coaxing  Beware of  Modified default themes  Deprecated functions  Phantom features Legacy to Latest Kieran O'Shea
  • 9. Plugins  Can break an upgrade  Can be broken by an upgrade  Deprecated functions  Logging on & bug hunt  WordPress Logging Legacy to Latest Kieran O'Shea
  • 10. Custom Posts  Legacy plugins may over-use tables  Post framework makes code simpler  Expose plugin data  Migration simplified Legacy to Latest Kieran O'Shea
  • 11. Freebies  Deserve one after a tricky upgrade? Legacy to Latest Kieran O'Shea
  • 12. Questions? Test site, code & other goodies: https://wcuk.kieranoshea.com/ Kieran O'Shea • kieran@kieranoshea.com @kieranoshea • http://www.kieranoshea.com/ Legacy to Latest Kieran O'Shea