Module: ActiveRecord::Configurations

Defined in:
lib/active_record/configurations.rb,
lib/active_record/configurations/version.rb

Constant Summary collapse

VERSION = 
"0.2.0"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#configurations ⇒ Object (readonly)

Returns the value of attribute configurations.



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# File 'lib/active_record/configurations.rb', line 55

def configurations
  @configurations
end

#environments ⇒ Object (readonly)

Returns the value of attribute environments.



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# File 'lib/active_record/configurations.rb', line 54

def environments
  @environments
end

Class Method Details

.extended(child) ⇒ Object 



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# File 'lib/active_record/configurations.rb', line 27

def self.extended(child)
  child.instance_variable_set(:@environments, {})
  child.instance_variable_set(:@configurations, {})
  
  # This is needed to explicitly override the behaviour provided by ActiveRecord::Core.
  def child.configurations
    instance_variable_get(:@configurations)
  end
  
  def child.configurations= value
    instance_variable_set(:@configurations, value)
  end
  
  # Remove the shitty "default"
  child.configurations.delete("default_env")
  
  # Add one that makes sense:
  child.configure(:default) do
    # The provided uri overrides other options.
    dsn ->{ENV[prefix.upcase + "_DSN"]}
    database ->{prefix + "_#{name}"}
    
    host 'localhost'
    prefix 'database'
  end
end

Instance Method Details

#configure(name, parent: :default, &block) ⇒ Object 



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# File 'lib/active_record/configurations.rb', line 101

def configure(name, parent: :default, &block)
  parent = self.lookup_environment(parent)
  
  environment = Build::Environment.new(parent, {name: name.to_s}, &block)
  
  self.environments[name] = environment
  
  configuration = environment.to_hash
  
  if dsn = configuration[:dsn]
    resolve_database_dsn(dsn, configuration)
  end
  
  self.configurations[name.to_s] = configuration.stringify_keys
end

#lookup_environment(name) ⇒ Object 



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# File 'lib/active_record/configurations.rb', line 91

def lookup_environment(name)
  return nil unless name
  
  if environment = self.environments[name]
    environment
  # elsif self.superclass
  #  self.superclass.lookup_environment(name)
  end
end

#resolve_database_dsn(string, environment) ⇒ Object 



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# File 'lib/active_record/configurations.rb', line 57

def resolve_database_dsn(string, environment)
  uri = URI.parse(string)
  
  case uri.scheme
  when 'postgres'
    environment[:adapter] = 'postgresql'
  when 'mysql'
    environment[:adapter] = 'mysql2'
  else
    environment[:adapter] = uri.scheme
  end
  
  if username = uri.user
    environment[:username] = username
  end
  
  if password = uri.password
    environment[:password] = password
  end
  
  if host = uri.host
    environment[:host] = host
  end
  
  if port = uri.port
    environment[:port] = port
  end
  
  if path = uri.path
    # The path should always be relative:
    environment[:database] = path.sub(/^\//, '')
  end
end