In this presentation we will talk about API Changes from D7 to D8 with code examples and a demo. The talk was given in Drupal camp Delhi and Mumbai by Piyuesh Kumar.

1. Future Proofing Your
Drupal Skills
Piyuesh Kumar
QED42
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2. AGENDA:
• Drupal 8 Api Changes:
• Module info file
• Routing System
• Drupal 8 CMI & Using Config inspector
• Writing forms and their submit handlers in d8.
• Drupal 8 new plugin system
• Basic changes to oftenly uses Drupal functions.
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3. Info File
• Info files changed to info.yml
• Old info file: {d7.info}
• New info file: {d8.info.yml}
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4. Warning:
Things are about to get...
geeky.
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5. ROUTING SYSTEM
• d7(hook_menu):
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6. D8 ROUTING
SYSTEM(HOOK_MENU)
• d8 conversion(hook_menu):
• Hook_menu Lives until hook_default_menu_links()
gets into core(https://drupal.org/node/2047633
)
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7. D8 ROUTING
SYSTEM(ROUTING.YML)
• d8 conversion:
• Callbacks and permissions are defined in a yml
file.{d8.routing.yml}
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8. D8 ROUTING SYSTEM(WRITING
CONTROLLERS)
• d8 conversion:
• Writing Page Callbacks
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9. D8 ROUTING SYSTEM(CORE
CONTROLLERS)
• _form
• _content
• _controller
• _entity_form
• _entity_list
• and many more..
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10. CONFIGURATION SCHEMA
• R.I.P variable-get/variable_set
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11. CONFIGURATION SCHEMA
• When would Config data get saved?
• UI changes (automatic): When the save button
is clicked on an admin page, data gets written to
the active store as well as db.
• Code changes (manual): use
admin/config/development/sync to sync the
config in code with db and active store.
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12. CMI(EXAMPLE)
• D7:
• D8:
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13. USING CONFIG INSPECTOR
• https://drupal.org/project/config_inspector/git-instructions
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14. WRITING FORMS AND THEIR SUBMIT
HANDLERS IN D8
• FormInterface(https://api.drupal.org/api/drupal/c
ore!lib!Drupal!Core!Form!FormInterface.php/interfa
ce/FormInterface/8)
• SystemConfigFormBase(http://drupalcontrib.org
/api/drupal/drupal!core!modules!system!lib!Drupal!s
ystem!SystemConfigFormBase.php/class/System
ConfigFormBase/8)
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15. EXAMPLE
• D7:
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16. EXAMPLE
• D8:
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17. D8 FORMS(VALIDATION &
SUBMISSION)
• function validateForm(array &$form, array
&$form_state) {}
• function submitForm(array &$form, array
&$form_state) {}
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18. D8
FORMS(SYSTEM_SETTINGS_FORM
??)
• Extends SystemConfigFormBase:
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19. D8 FORMS(OTHER EXTENDABLE
CLASSES IN CORE)
• ConfirmFormBase(https://api.drupal.org/api/drupal/core!lib!Dru
pal!Core!Form!ConfirmFormBase.php/class/ConfirmFormBase/
8)
• BulkFormBase(https://api.drupal.org/api/drupal/core!modules!sy
stem!lib!Drupal!system!Plugin!views!field!BulkFormBase.php/8)
• FieldInstanceFormBase
• ViewsFormBase(https://api.drupal.org/api/drupal/core!modules!vi
ews_ui!lib!Drupal!views_ui!Form!Ajax!ViewsFormBase.php/class/
ViewsFormBase/8)
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20. WHAT HAPPENED TO DRUPAL_*_FORM
FUNCTIONS?
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21. DRUPAL 8 NEW PLUGIN SYSTEM
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22. Module/hook system
functions replaced with
module handler
service(https://drupal.org/n
ode/1894902)
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23. Basic Function from d7 to d8
• hook_init removed(https://drupal.org/node/2013014)
• drupal_goto has been
removed(https://drupal.org/node/2023537)e.g.,
drupal_goto($url)=>new RedirectResponse($url);
• hook_boot has been removed(https://drupal.org/node/1909596)
• $_GET[‘q'] has been
removed(https://drupal.org/node/1659562)
• drupal_*_form functions replaced with formBuilder service. e.g.,
drupal_get_from => Drupal::formBuilder()->getForm()
• For more goto https://drupal.org/list-changes
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24. References
Demo code is available at
https://github.com/piyuesh23/Drupal8-demo
• https://drupal.org/list-changes
• http://previousnext.com.au/blog/controlling-access-drupal-
8-routes-access-checks
• https://drupal.org/node/1800686
• DrupalCon Portland Videos
(http://www.youtube.com/playlist?list=PLpeDXSh
4nHjRlZKs7cj2L_kLI5osP5ERc)
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