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CMI: Death of Variables revisited
Roni Kantis
Thursday, May 16, 13
Roni Kantis
drupal.org: bfr
@roni_kantis
Druid Oy
@druidfi
Drupal Meetup Finland
14.6.2013
Program:
Sauna, terva and kossu.
Generously sponsored by the association and
KW Digital.
druid.fi/meetup
Thursday, May 16, 13
Current state of configuration
• 95% of Drupal development is done through UI
• Scattered throughout the database
• Variable table
• Custom tables and entities
• No standard format
• No API
Thursday, May 16, 13
Thursday, May 16, 13
Features -module
" Features is not a reliable way to deploy configuration
changes.
It was never meant to be. "
- Tim Plunkett
Thursday, May 16, 13
Problems with variables
• No standardized way to move between environments
• Cumbersome to manage environment specific configuration
• Loaded on every request
Thursday, May 16, 13
So we killed it!
- No more variable_trololoo()
- No more Features?
Thursday, May 16, 13
Enter Configuration Management Initiative (CMI)
•Configuration system
•ConfigEntity
•States API
Thursday, May 16, 13
Configuration system
• Automatically exportable
• Lazy loadable
• UUID in core
• Standardized API
Thursday, May 16, 13
Content vs configuration
• Can you give it a default value?
• Would it benefit significally from direct sql-queries?
• Is it environment specific?
Thursday, May 16, 13
How does it work?
• Object oriented approach:
• BEFORE: variable_set(‘my variable’, $data);
• NOW: $config->set(‘my variable’, $data)->save();
Thursday, May 16, 13
How does it work?
• Configuration locations:
• sites/default/files/config_{hash}/active
• sites/default/files/config_{hash}/staging
• Configuration files:
• manifest.image.styles.yml
• image.settings.yml
• image.style.medium.yml
Thursday, May 16, 13
Image.style.medium.yml
Thursday, May 16, 13
Configuration sync UI
Thursday, May 16, 13
Configuration sync UI
Thursday, May 16, 13
Questions?
Thursday, May 16, 13

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Death of variables revisited