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Diffstat (limited to 'guides/source/configuring.md')
| -rw-r--r-- | guides/source/configuring.md | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/guides/source/configuring.md b/guides/source/configuring.md index a0ab707b51..9ab6449729 100644 --- a/guides/source/configuring.md +++ b/guides/source/configuring.md @@ -58,19 +58,19 @@ These configuration methods are to be called on a `Rails::Railtie` object, such * `config.asset_host` sets the host for the assets. Useful when CDNs are used for hosting assets, or when you want to work around the concurrency constraints builtin in browsers using different domain aliases. Shorter version of `config.action_controller.asset_host`. -* `config.autoload_once_paths` accepts an array of paths from which Rails will autoload constants that won't be wiped per request. Relevant if `config.cache_classes` is false, which is the case in development mode by default. Otherwise, all autoloading happens only once. All elements of this array must also be in `autoload_paths`. Default is an empty array. +* `config.autoload_once_paths` accepts an array of paths from which Rails will autoload constants that won't be wiped per request. Relevant if `config.cache_classes` is `false`, which is the case in development mode by default. Otherwise, all autoloading happens only once. All elements of this array must also be in `autoload_paths`. Default is an empty array. * `config.autoload_paths` accepts an array of paths from which Rails will autoload constants. Default is all directories under `app`. -* `config.cache_classes` controls whether or not application classes and modules should be reloaded on each request. Defaults to false in development mode, and true in test and production modes. Can also be enabled with `threadsafe!`. +* `config.cache_classes` controls whether or not application classes and modules should be reloaded on each request. Defaults to `false` in development mode, and `true` in test and production modes. Can also be enabled with `threadsafe!`. * `config.action_view.cache_template_loading` controls whether or not templates should be reloaded on each request. Defaults to whatever is set for `config.cache_classes`. * `config.cache_store` configures which cache store to use for Rails caching. Options include one of the symbols `:memory_store`, `:file_store`, `:mem_cache_store`, `:null_store`, or an object that implements the cache API. Defaults to `:file_store` if the directory `tmp/cache` exists, and to `:memory_store` otherwise. -* `config.colorize_logging` specifies whether or not to use ANSI color codes when logging information. Defaults to true. +* `config.colorize_logging` specifies whether or not to use ANSI color codes when logging information. Defaults to `true`. -* `config.consider_all_requests_local` is a flag. If true then any error will cause detailed debugging information to be dumped in the HTTP response, and the `Rails::Info` controller will show the application runtime context in `/rails/info/properties`. True by default in development and test environments, and false in production mode. For finer-grained control, set this to false and implement `local_request?` in controllers to specify which requests should provide debugging information on errors. +* `config.consider_all_requests_local` is a flag. If `true` then any error will cause detailed debugging information to be dumped in the HTTP response, and the `Rails::Info` controller will show the application runtime context in `/rails/info/properties`. `true` by default in development and test environments, and `false` in production mode. For finer-grained control, set this to `false` and implement `local_request?` in controllers to specify which requests should provide debugging information on errors. * `config.console` allows you to set class that will be used as console you run `rails console`. It's best to run it in `console` block: @@ -83,11 +83,11 @@ These configuration methods are to be called on a `Rails::Railtie` object, such end ``` -* `config.dependency_loading` is a flag that allows you to disable constant autoloading setting it to false. It only has effect if `config.cache_classes` is true, which it is by default in production mode. This flag is set to false by `config.threadsafe!`. +* `config.dependency_loading` is a flag that allows you to disable constant autoloading setting it to `false`. It only has effect if `config.cache_classes` is true, which it is by default in production mode. This flag is set to `false` by `config.threadsafe!`. -* `config.eager_load` when true, eager loads all registered `config.eager_load_namespaces`. This includes your application, engines, Rails frameworks and any other registered namespace. +* `config.eager_load` when `true`, eager loads all registered `config.eager_load_namespaces`. This includes your application, engines, Rails frameworks and any other registered namespace. -* `config.eager_load_namespaces` registers namespaces that are eager loaded when `config.eager_load` is true. All namespaces in the list must respond to the `eager_load!` method. +* `config.eager_load_namespaces` registers namespaces that are eager loaded when `config.eager_load` is `true`. All namespaces in the list must respond to the `eager_load!` method. * `config.eager_load_paths` accepts an array of paths from which Rails will eager load on boot if cache classes is enabled. Defaults to every folder in the `app` directory of the application. @@ -95,7 +95,7 @@ These configuration methods are to be called on a `Rails::Railtie` object, such * `config.exceptions_app` sets the exceptions application invoked by the ShowException middleware when an exception happens. Defaults to `ActionDispatch::PublicExceptions.new(Rails.public_path)`. -* `config.file_watcher` the class used to detect file updates in the filesystem when `config.reload_classes_only_on_change` is true. Must conform to `ActiveSupport::FileUpdateChecker` API. +* `config.file_watcher` the class used to detect file updates in the filesystem when `config.reload_classes_only_on_change` is `true`. Must conform to `ActiveSupport::FileUpdateChecker` API. * `config.filter_parameters` used for filtering out the parameters that you don't want shown in the logs, such as passwords or credit card numbers. @@ -109,11 +109,11 @@ These configuration methods are to be called on a `Rails::Railtie` object, such * `config.middleware` allows you to configure the application's middleware. This is covered in depth in the [Configuring Middleware](#configuring-middleware) section below. -* `config.reload_classes_only_on_change` enables or disables reloading of classes only when tracked files change. By default tracks everything on autoload paths and is set to true. If `config.cache_classes` is true, this option is ignored. +* `config.reload_classes_only_on_change` enables or disables reloading of classes only when tracked files change. By default tracks everything on autoload paths and is set to `true`. If `config.cache_classes` is `true`, this option is ignored. * `config.secret_key_base` used for specifying a key which allows sessions for the application to be verified against a known secure key to prevent tampering. Applications get `config.secret_key_base` initialized to a random key in `config/initializers/secret_token.rb`. -* `config.serve_static_assets` configures Rails itself to serve static assets. Defaults to true, but in the production environment is turned off as the server software (e.g. Nginx or Apache) used to run the application should serve static assets instead. Unlike the default setting set this to true when running (absolutely not recommended!) or testing your app in production mode using WEBrick. Otherwise you won´t be able use page caching and requests for files that exist regularly under the public directory will anyway hit your Rails app. +* `config.serve_static_assets` configures Rails itself to serve static assets. Defaults to `true`, but in the production environment is turned off as the server software (e.g. Nginx or Apache) used to run the application should serve static assets instead. Unlike the default setting set this to `true` when running (absolutely not recommended!) or testing your app in production mode using WEBrick. Otherwise you won´t be able use page caching and requests for files that exist regularly under the public directory will anyway hit your Rails app. * `config.session_store` is usually set up in `config/initializers/session_store.rb` and specifies what class to use to store the session. Possible values are `:cookie_store` which is the default, `:mem_cache_store`, and `:disabled`. The last one tells Rails not to deal with sessions. Custom session stores can also be specified: @@ -127,13 +127,13 @@ These configuration methods are to be called on a `Rails::Railtie` object, such * `config.beginning_of_week` sets the default beginning of week for the application. Accepts a valid week day symbol (e.g. `:monday`). -* `config.whiny_nils` enables or disables warnings when a certain set of methods are invoked on `nil` and it does not respond to them. Defaults to true in development and test environments. +* `config.whiny_nils` enables or disables warnings when a certain set of methods are invoked on `nil` and it does not respond to them. Defaults to `true` in development and test environments. ### Configuring Assets * `config.assets.enabled` a flag that controls whether the asset pipeline is enabled. It is explicitly initialized in `config/application.rb`. -* `config.assets.compress` a flag that enables the compression of compiled assets. It is explicitly set to true in `config/production.rb`. +* `config.assets.compress` a flag that enables the compression of compiled assets. It is explicitly set to `true` in `config/production.rb`. * `config.assets.css_compressor` defines the CSS compressor to use. It is set by default by `sass-rails`. The unique alternative value at the moment is `:yui`, which uses the `yui-compressor` gem. @@ -155,7 +155,7 @@ These configuration methods are to be called on a `Rails::Railtie` object, such * `config.assets.compile` is a boolean that can be used to turn on live Sprockets compilation in production. -* `config.assets.logger` accepts a logger conforming to the interface of Log4r or the default Ruby `Logger` class. Defaults to the same configured at `config.logger`. Setting `config.assets.logger` to false will turn off served assets logging. +* `config.assets.logger` accepts a logger conforming to the interface of Log4r or the default Ruby `Logger` class. Defaults to the same configured at `config.logger`. Setting `config.assets.logger` to `false` will turn off served assets logging. ### Configuring Generators @@ -258,21 +258,21 @@ config.middleware.delete "Rack::MethodOverride" * `config.active_record.table_name_suffix` lets you set a global string to be appended to table names. If you set this to `_northwest`, then the Customer class will look for `customers_northwest` as its table. The default is an empty string. -* `config.active_record.pluralize_table_names` specifies whether Rails will look for singular or plural table names in the database. If set to true (the default), then the Customer class will use the `customers` table. If set to false, then the Customer class will use the `customer` table. +* `config.active_record.pluralize_table_names` specifies whether Rails will look for singular or plural table names in the database. If set to `true` (the default), then the Customer class will use the `customers` table. If set to `false`, then the Customer class will use the `customer` table. * `config.active_record.default_timezone` determines whether to use `Time.local` (if set to `:local`) or `Time.utc` (if set to `:utc`) when pulling dates and times from the database. The default is `:utc` for Rails, although Active Record defaults to `:local` when used outside of Rails. * `config.active_record.schema_format` controls the format for dumping the database schema to a file. The options are `:ruby` (the default) for a database-independent version that depends on migrations, or `:sql` for a set of (potentially database-dependent) SQL statements. -* `config.active_record.timestamped_migrations` controls whether migrations are numbered with serial integers or with timestamps. The default is true, to use timestamps, which are preferred if there are multiple developers working on the same application. +* `config.active_record.timestamped_migrations` controls whether migrations are numbered with serial integers or with timestamps. The default is `true`, to use timestamps, which are preferred if there are multiple developers working on the same application. -* `config.active_record.lock_optimistically` controls whether Active Record will use optimistic locking and is true by default. +* `config.active_record.lock_optimistically` controls whether Active Record will use optimistic locking and is `true` by default. * `config.active_record.cache_timestamp_format` controls the format of the timestamp value in the cache key. Default is `:number`. The MySQL adapter adds one additional configuration option: -* `ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans` controls whether Active Record will consider all `tinyint(1)` columns in a MySQL database to be booleans and is true by default. +* `ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans` controls whether Active Record will consider all `tinyint(1)` columns in a MySQL database to be booleans and is `true` by default. The schema dumper adds one additional configuration option: @@ -284,7 +284,7 @@ The schema dumper adds one additional configuration option: * `config.action_controller.asset_host` sets the host for the assets. Useful when CDNs are used for hosting assets rather than the application server itself. -* `config.action_controller.perform_caching` configures whether the application should perform caching or not. Set to false in development mode, true in production. +* `config.action_controller.perform_caching` configures whether the application should perform caching or not. Set to `false` in development mode, `true` in production. * `config.action_controller.default_static_extension` configures the extension used for cached pages. Defaults to `.html`. @@ -342,7 +342,7 @@ The schema dumper adds one additional configuration option: * `config.action_view.erb_trim_mode` gives the trim mode to be used by ERB. It defaults to `'-'`. See the [ERB documentation](http://www.ruby-doc.org/stdlib/libdoc/erb/rdoc/) for more information. -* `config.action_view.embed_authenticity_token_in_remote_forms` allows you to set the default behavior for `authenticity_token` in forms with `:remote => true`. By default it's set to false, which means that remote forms will not include `authenticity_token`, which is helpful when you're fragment-caching the form. Remote forms get the authenticity from the `meta` tag, so embedding is unnecessary unless you support browsers without JavaScript. In such case you can either pass `:authenticity_token => true` as a form option or set this config setting to `true` +* `config.action_view.embed_authenticity_token_in_remote_forms` allows you to set the default behavior for `authenticity_token` in forms with `:remote => true`. By default it's set to `false`, which means that remote forms will not include `authenticity_token`, which is helpful when you're fragment-caching the form. Remote forms get the authenticity from the `meta` tag, so embedding is unnecessary unless you support browsers without JavaScript. In such case you can either pass `:authenticity_token => true` as a form option or set this config setting to `true` * `config.action_view.prefix_partial_path_with_controller_namespace` determines whether or not partials are looked up from a subdirectory in templates rendered from namespaced controllers. For example, consider a controller named `Admin::PostsController` which renders this template: @@ -370,11 +370,11 @@ There are a number of settings available on `config.action_mailer`: * `:location` - The location of the sendmail executable. Defaults to `/usr/sbin/sendmail`. * `:arguments` - The command line arguments. Defaults to `-i -t`. -* `config.action_mailer.raise_delivery_errors` specifies whether to raise an error if email delivery cannot be completed. It defaults to true. +* `config.action_mailer.raise_delivery_errors` specifies whether to raise an error if email delivery cannot be completed. It defaults to `true`. * `config.action_mailer.delivery_method` defines the delivery method. The allowed values are `:smtp` (default), `:sendmail`, and `:test`. -* `config.action_mailer.perform_deliveries` specifies whether mail will actually be delivered and is true by default. It can be convenient to set it to false for testing. +* `config.action_mailer.perform_deliveries` specifies whether mail will actually be delivered and is `true` by default. It can be convenient to set it to `false` for testing. * `config.action_mailer.default_options` configures Action Mailer defaults. Use to set options like `from` or `reply_to` for every mailer. These default to: @@ -622,13 +622,13 @@ Below is a comprehensive list of all the initializers found in Rails in the orde * `set_clear_dependencies_hook` Provides a hook for `active_record.set_dispatch_hooks` to use, which will run before this initializer. This initializer — which runs only if `cache_classes` is set to `false` — uses `ActionDispatch::Callbacks.after` to remove the constants which have been referenced during the request from the object space so that they will be reloaded during the following request. -* `initialize_dependency_mechanism` If `config.cache_classes` is true, configures `ActiveSupport::Dependencies.mechanism` to `require` dependencies rather than `load` them. +* `initialize_dependency_mechanism` If `config.cache_classes` is `true`, configures `ActiveSupport::Dependencies.mechanism` to `require` dependencies rather than `load` them. * `bootstrap_hook` Runs all configured `before_initialize` blocks. * `i18n.callbacks` In the development environment, sets up a `to_prepare` callback which will call `I18n.reload!` if any of the locales have changed since the last request. In production mode this callback will only run on the first request. -* `active_support.initialize_whiny_nils` Requires `active_support/whiny_nil` if `config.whiny_nils` is true. This file will output errors such as: +* `active_support.initialize_whiny_nils` Requires `active_support/whiny_nil` if `config.whiny_nils` is `true`. This file will output errors such as: ``` Called id for nil, which would mistakenly be 4 — if you really wanted the id of nil, use object_id @@ -660,7 +660,7 @@ Below is a comprehensive list of all the initializers found in Rails in the orde * `action_controller.compile_config_methods` Initializes methods for the config settings specified so that they are quicker to access. -* `active_record.initialize_timezone` Sets `ActiveRecord::Base.time_zone_aware_attributes` to true, as well as setting `ActiveRecord::Base.default_timezone` to UTC. When attributes are read from the database, they will be converted into the time zone specified by `Time.zone`. +* `active_record.initialize_timezone` Sets `ActiveRecord::Base.time_zone_aware_attributes` to `true`, as well as setting `ActiveRecord::Base.default_timezone` to UTC. When attributes are read from the database, they will be converted into the time zone specified by `Time.zone`. * `active_record.logger` Sets `ActiveRecord::Base.logger` — if it's not already set — to `Rails.logger`. @@ -708,13 +708,13 @@ Below is a comprehensive list of all the initializers found in Rails in the orde * `build_middleware_stack` Builds the middleware stack for the application, returning an object which has a `call` method which takes a Rack environment object for the request. -* `eager_load!` If `config.eager_load` is true, runs the `config.before_eager_load` hooks and then calls `eager_load!` which will load all `config.eager_load_namespaces`. +* `eager_load!` If `config.eager_load` is `true`, runs the `config.before_eager_load` hooks and then calls `eager_load!` which will load all `config.eager_load_namespaces`. * `finisher_hook` Provides a hook for after the initialization of process of the application is complete, as well as running all the `config.after_initialize` blocks for the application, railties and engines. * `set_routes_reloader` Configures Action Dispatch to reload the routes file using `ActionDispatch::Callbacks.to_prepare`. -* `disable_dependency_loading` Disables the automatic dependency loading if the `config.eager_load` is set to true. +* `disable_dependency_loading` Disables the automatic dependency loading if the `config.eager_load` is set to `true`. Database pooling ---------------- @@ -729,7 +729,7 @@ development: timeout: 5000 ``` -Since the connection pooling is handled inside of ActiveRecord by default, all application servers (Thin, mongrel, Unicorn etc.) should behave the same. Initially, the database connection pool is empty and it will create additional connections as the demand for them increases, until it reaches the connection pool limit. +Since the connection pooling is handled inside of Active Record by default, all application servers (Thin, mongrel, Unicorn etc.) should behave the same. Initially, the database connection pool is empty and it will create additional connections as the demand for them increases, until it reaches the connection pool limit. Any one request will check out a connection the first time it requires access to the database, after which it will check the connection back in, at the end of the request, meaning that the additional connection slot will be available again for the next request in the queue. |