Loads and returns the entire raw configuration of database from values
stored in `config/database.yml`.
# File railties/lib/rails/application/configuration.rb, line 97
def database_configuration
path = paths["config/database"].existent.first
yaml = Pathname.new(path) if path
config = if yaml && yaml.exist?
require "yaml"
require "erb"
YAML.load(ERB.new(yaml.read).result) || {}
elsif ENV['DATABASE_URL']
# Value from ENV['DATABASE_URL'] is set to default database connection
# by Active Record.
{}
else
raise "Could not load database configuration. No such file - #{paths["config/database"].instance_variable_get(:@paths)}"
end
config
rescue Psych::SyntaxError => e
raise "YAML syntax error occurred while parsing #{paths["config/database"].first}. " "Please note that YAML must be consistently indented using spaces. Tabs are not allowed. " "Error: #{e.message}"
rescue => e
raise e, "Cannot load `Rails.application.database_configuration`:\n#{e.message}", e.backtrace
end