Session given at DrupalCamp Baltics 2013. Overview of the configuration management system in Drupal 8. Covers the api, config entities, context system.

1. Drupal 8 Configuration system for
coders and site builders
Friday 23 August 13

2. who am I?
Kristof De Jaeger
@swentel
Co-maintainer of Field API
Lead maintainer of Display Suite
Developer @ Wunderkraut
Friday 23 August 13

3. Outline
• What’s the problem
• How did we solve it
• Simple static settings
• Configuration entities
• Deployment - with demo
• Configuration schema
• Context, events and overrides
Friday 23 August 13

4. What problems are we
trying to solve?
• Variable soup
Live
Save
textSetting 1
Setting 2 label
Database Database
Dev
TEST
test test test test
test test test test
test test test test
test test
node/4admin/config/foo
Welcome
This is real
content on the
live site that end
users are viewing
node/4
Save
old textSetting 1
Setting 2 label
admin/config/foo
Friday 23 August 13

5. Live
Save
textSetting 1
Setting 2 label
Database Database
Dev
TEST
test test test test
test test test test
test test test test
test test
node/4admin/config/foo
Welcome
This is real
content on the
live site that end
users are viewing
node/4
Save
old textSetting 1
Setting 2 label
admin/config/foo
Danger!
Want to bring over configuration
changes from dev, but not
overwrite live content!
What problems are we
trying to solve?
Friday 23 August 13

6. What problems are we
trying to solve?
variable_set()/variable_get()
ctools_export_object()/
ctools_export_load_object()
db_select()/db_update()/
db_delete()
$conf[...];
hook_update_N()
drush fu
http://www.flickr.com/photos/bean/322616749
napkins
Friday 23 August 13

7. The solution
• Files using theYAML specification
• Active and staging directory
• Cached in the database using a standard
cache interface
• Config directory changed via settings.php
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8. The anatomy of a
configuration file
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9. system.site.yml
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10. system.site.yml
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11. system.site.yml
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12. name: 'Configuration management'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: ''
404: ''
front: node
system.site.yml
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13. The API
Drupal::config()
->get()
->set()
->save()
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14. Accessing data
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15. name: 'Configuration management'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: ''
404: ''
front: node
$site_name = Drupal::config('system.site')->get('name');
Friday 23 August 13

16. $page_data = Drupal::config('system.site')->get('page');
name: 'Configuration management'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: ''
404: ''
front: node
Friday 23 August 13

17. $frontpage = Drupal::config('system.site')-
>get('page.front');
name: 'Configuration management'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: ''
404: ''
front: node
Friday 23 August 13

18. $all_the_data = Drupal::config('system.site')->get();
name: 'Configuration management'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: ''
404: ''
front: node
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19. Saving data
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20. name: 'CMI is good'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: ''
404: ''
front: node
Drupal::config('system.site')
->set('name', 'CMI is good')
->save();
Friday 23 August 13

21. name: 'CMI is great'
mail: admin@example.com
slogan: 'makes Drupal 8 cex -y'
page:
403: access-denied
404: not-found
front: user
Drupal::config('system.site')
->set('name', 'CMI is great')
->set('page', array(
403 => 'access-denied',
404 => 'not-found',
front => 'user',
))
->save();
Friday 23 August 13

22. Friday 23 August 13

23. • system_settings_form is dead
• add your own submit callback
• you are responsible for saving configuration
• ship with default configuration file
simple settings
Friday 23 August 13

24. {system}
{date_format_locale}
{date_formats}
{date_format_type}
{field_config}
{field_config_instance}
{filter}
{filter_format}
{node_type} {role}{role_permission}
{variable}
{language}
Friday 23 August 13

25. Config all the things!
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26. Config entities
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27. use DrupalCoreConfigEntityConfigEntityBase;
use DrupalCoreAnnotationPlugin;
use DrupalCoreAnnotationTranslation;
/**
* Defines the contact category entity.
*
* @EntityType(
* id = "contact_category",
* label = @Translation("Category"),
* module = "contact",
* controllers = {
* controller_class = "DrupalcontactCategoryStorageController",
* list = "DrupalcontactCategoryListController",
* form = {
* "add" = "DrupalcontactCategoryFormController"
* "edit" = "DrupalcontactCategoryFormController"
* }
* }
* uri_callback = "contact_category_uri",
* config_prefix = "contact.category",
* entity_keys = {
* "id" = "id",
* "label" = "label",
* "uuid" = "uuid"
* }
* )
*/
class Category extends ConfigEntityBase implements CategoryInterface {
/**
* The category ID.Friday 23 August 13

28. use DrupalCoreConfigEntityConfigEntityBase;
use DrupalCoreAnnotationPlugin;
use DrupalCoreAnnotationTranslation;
/**
* Defines the contact category entity.
*
* @EntityType(
* id = "contact_category",
* label = @Translation("Category"),
* module = "contact",
* controllers = {
* controller_class = "DrupalcontactCategoryStorageController",
* list = "DrupalcontactCategoryListController",
* form = {
* "add" = "DrupalcontactCategoryFormController"
* "edit" = "DrupalcontactCategoryFormController"
* }
* }
* uri_callback = "contact_category_uri",
* config_prefix = "contact.category",
* entity_keys = {
* "id" = "id",
* "label" = "label",
* "uuid" = "uuid"
* }
* )
*/
class Category extends ConfigEntityBase implements CategoryInterface {
/**
* The category ID.Friday 23 August 13

29. namespace DrupalcontactPluginCoreEntity;
use DrupalCoreConfigEntityConfigEntityBase;
use DrupalCoreAnnotationPlugin;
use DrupalCoreAnnotationTranslation;
/**
* Defines the contact category entity.
*
* @Plugin(
* id = "contact_category",
* label = @Translation("Category"),
* module = "contact",
* controllers = {
* controller_class = "DrupalCoreConfigEntityConfigStorageController",
* list = "DrupalcontactCategoryListController",
* form = {
* "add" = "DrupalcontactCategoryFormController"
* }
* },
* uri_callback = "contact_category_uri",
* config_prefix = "contact.category",
* entity_keys = {
* "id" = "id",
* "label" = "label",
* "uuid" = "uuid"
* }
* )
*/
class Category extends ConfigEntityBase implements ContactInterface {
/**
* The category ID.
Friday 23 August 13

30. use DrupalCoreConfigEntityConfigEntityBase;
use DrupalCoreAnnotationPlugin;
use DrupalCoreAnnotationTranslation;
/**
* Defines the contact category entity.
*
* @EntityType(
* id = "contact_category",
* label = @Translation("Category"),
* module = "contact",
* controllers = {
* controller_class = "DrupalCoreConfigEntityConfigStorageController",
* list = "DrupalcontactCategoryListController",
* form = {
* "add" = "DrupalcontactCategoryFormController"
* "edit" = "DrupalcontactCategoryFormController"
* }
* }
* uri_callback = "contact_category_uri",
* config_prefix = "contact.category",
* entity_keys = {
* "id" = "id",
* "label" = "label",
* "uuid" = "uuid"
* }
* )
*/
class Category extends ConfigEntityBase implements ContactInterface {
/**
* The category ID.Friday 23 August 13

31. */
class Category extends ConfigEntityBase {
/**
* The category ID.
*/
public $id;
/**
* The category UUID.
*/
public $uuid;
/**
* The category label.
*/
public $label;
/**
* List of recipient e-mail addresses.
*/
public $recipients = array();
/**
* An auto-reply message to send to the message author.
*/
public $reply = '';
/**
* Weight of this category (used for sorting).
*/
public $weight = 0;
}
Friday 23 August 13

32. id: feedback
uuid: de77e4f3-f94b-41a5-ad05-5c32fa08444f
label: 'Website feedback'
recipients:
- ''
reply: ''
weight: '0'
langcode: und
contact.category.feedback.yml
Friday 23 August 13

33. (config) entity API
• entity_load
• entity_save
• $object->any_method()
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34. Deployment
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35. Database
Development environment
Active
Directory
1
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36. Database
Development environment
Active
Directory
1
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37. Database
Development environment
Active
Directory
1
2
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38. Database
Production environment
Staging
Directory
Active
Directory
3
admin/config/development/sync
Friday 23 August 13

39. Database
Production environment
Staging
Directory
Active
Directory
3
4
admin/config/development/sync
Friday 23 August 13

40. Demo time
• No partial imports !
Friday 23 August 13

41. Drush integration
Friday 23 August 13

42. Advanced workflows
• https://drupal.org/sandbox/dereine/2057465
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43. Don’t hack core
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44. Don’t hack active config
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45. State API
Drupal::state()->set('update.last_check', $now);
//...
$last_check = Drupal::state()->get('update.last_check') ?: 0;
Only useful for this environment? Use state().
Friday 23 August 13

46. Configuration schema
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47. system.maintenance.yml
enabled: '0'
message: '@site is currently under maintenance. We
should be back shortly. Thank you for your patience.'
Friday 23 August 13

48. system.schema.yml
system.maintenance:
type: mapping
label: 'Maintenance mode'
mapping:
"enabled":
type: boolean
label: "Put site into maintenance mode"
"message":
type: text
label: "Message to display when in maintenance mode"
Friday 23 August 13

49. Basic scalar types from typed data
boolean:
label: 'Boolean'
class: 'DrupalCoreTypedDataTypeBoolean'
email:
label: 'Email'
class: 'DrupalCoreTypedDataTypeEmail'
integer:
label: 'Integer'
class: 'DrupalCoreTypedDataTypeInteger'
string:
label: 'String'
class: 'DrupalCoreTypedDataTypeString'
uri:
label: 'Uri'
class: 'DrupalCoreTypedDataTypeUri'
Friday 23 August 13

50. Basic data types for configuration
undefined:
label: 'Undefined'
class: 'DrupalCoreConfigSchemaProperty'
mapping:
label: Mapping
class: 'DrupalCoreConfigSchemaMapping'
sequence:
label: Sequence
class: 'DrupalCoreConfigSchemaSequence'
Friday 23 August 13

51. Simple extended data types
# Human readable string that must be plain text and editable
with a text field.
label:
type: string
label: 'Label'
translatable: true
# Internal Drupal path
path:
type: string
label: 'Path'
# Human readable string that can contain multiple lines of text
or HTML.
text:
type: string
label: 'Text'
translatable: true
Friday 23 August 13

52. Complex extended data type
# Mail text with subject and body parts.
mail:
type: mapping
label: "Mail"
mapping:
"subject":
type: text
label: "Subject"
"body":
type: text
label: "Body"
Friday 23 August 13

53. Config inspector module
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54. Context system,
Events & Overrides
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55. global $conf;
$conf['system.maintenance']['message'] =
'Sorry, our site is down now.';
Global overrides
Friday 23 August 13

56. class ConfigGlobalOverrideSubscriber implements
EventSubscriberInterface {
static function getSubscribedEvents() {
$events['config.init'][] = array('configInit',
30);
return $events;
}
public function configInit(ConfigEvent $event) {
global $conf;
$config = $event->getConfig();
if (isset($conf[$config->getName()])) {
$config->setOverride($conf[$config->getName()]);
}
}
}
Global overrides
Friday 23 August 13

57. Break out of contexts
// Enter the override-free context, so we can ensure no
overrides are applied.
config_context_enter('config.context.free');
// Get system site maintenance message text from the original
config.
$message = config('system.maintenance')->get('message');
// Leave the override-free context.
config_context_leave();
Friday 23 August 13

58. Get into contexts
// Enter a user specific context.
$context = config_context_enter("DrupaluserUserConfigContext");
// Set the account to use on the context.
$context->setAccount($account);
$mail_config = Drupal::config('user.mail');
// Do stuff...
config_context_leave();
Friday 23 August 13

59. Language overrides
block.block.bartik.login.yml
id: bartik.login
uuid: 7012ebfd-7083-47ef-b...
weight: '0'
status: '1'
langcode: en
region: sidebar_first
plugin: user_login_block
settings:
label: 'User login'
module: user
label_display: visible
cache: '-1'
......
locale.hu.block.block.bartik.login.yml
settings:
label: 'Belépés'
locale.nl.block.block.bartik.login.yml
settings:
label: 'Inloggen'
Friday 23 August 13

60. recap and advice
• key names/properties should have meaning
• Use config entities instead of tables
• Use getters/setters/methods on entities
• Include config schema (translation!)
• Upgrade functions available in update.inc
Friday 23 August 13

61. Please try it out!
• #drupal-cmi - Dedicated IRC channel
• docs - https://drupal.org/node/1667894
• help along - http://drupal.org/core-mentoring-hours
Friday 23 August 13

62. • http://groups.drupal.org/cmi - Discussion
• http://v.gd/cmi_issues - Issues
• http://groups.drupal.org/core - Core announcements
• #drupal-cmi - Dedicated IRC channel
• http://drupal.org/core-mentoring-hours
Friday 23 August 13

63. Questions ?
Friday 23 August 13

64. Thanks
@heyrocker
@webchick
@moshe_weitzman
@GaborHojtsy
@alexpott
Friday 23 August 13