A UrlConfig object is created for each database configuration entry that is created from a URL. This can either be a URL string or a hash with a URL in place of the config hash.
A URL config:
postgres://localhost/foo
Becomes:
#<ActiveRecord::DatabaseConfigurations::UrlConfig:0x00007fdc3238f340 @env_name="default_env", @spec_name="primary", @config={"adapter"=>"postgresql", "database"=>"foo", "host"=>"localhost"}, @url="postgres://localhost/foo">
:env_name
- The Rails environment, ie “development”.
:spec_name
- The specification name. In a standard two-tier database configuration this will default to “primary”. In a multiple database three-tier database configuration this corresponds to the name used in the second tier, for example “primary_readonly”.
:url
- The database URL.
:config
- The config hash. This is the hash that contains the database adapter, name, and other important information for database connections.
# File activerecord/lib/active_record/database_configurations/url_config.rb, line 34 def initialize(env_name, spec_name, url, config = {}) super(env_name, spec_name) @config = build_config(config, url) @url = url end
# File activerecord/lib/active_record/database_configurations/url_config.rb, line 54 def migrations_paths config["migrations_paths"] end
The migrations paths for a database configuration. If the migrations_paths
key is present in the config, migrations_paths
will return its value.
# File activerecord/lib/active_record/database_configurations/url_config.rb, line 47 def replica? config["replica"] end
Determines whether a database configuration is for a replica / readonly connection. If the replica
key is present in the config, replica?
will return true
.
© 2004–2019 David Heinemeier Hansson
Licensed under the MIT License.