David Taylor 0d0d78841b
FIX: Remove plugin.enabled? checks at initialization time (#6166)
Checking `plugin.enabled?` while initializing plugins causes issues in two ways:
  - An application restart is required for changes to take effect. A load-balanced multi-server environment could behave very weirdly if containers restart at different times.
  - In a multisite environment, it takes the `enabled?` setting from the default site. Changes on that site affect all other sites in the cluster.

Instead, `plugin.enabled?` should be checked at runtime, in the context of a request. This commit removes `plugin.enabled?` from many `instance.rb` methods.

I have added a working `plugin.enabled?` implementation for methods that actually affect security/functionality:
  - `post_custom_fields_whitelist`
  - `whitelist_staff_user_custom_field`
  - `add_permitted_post_create_param`
2018-07-25 16:44:09 +01:00
..
2016-05-30 11:38:38 +08:00