isolates a new lib the responsability to discover url string connection

lib/interestie.rb

@@ -3,84 +3,14 @@
 $LOAD_PATH.unshift File.expand_path("../", __FILE__)
 $LOAD_PATH.unshift File.expand_path("../../app/models", __FILE__)
 
-class ConnectionString
-  def initialize(config)
-    @config = config
-  end
-
-  attr_accessor :config
-
-  def credentials
-    "#{@config["username"]}:#{@config["password"]}"
-  end
-
-  def database
-    "/#{@config["database"]}"
-  end
-
-  def host
-    @config["host"] ? "@#{@config["host"]}" : "@localhost"
-  end
-
-  def connection
-    "#{credentials}#{host}#{database}"
-  end
-
-  def string
-    "#{adapter}://#{connection}"
-  end
-end
-
-class SqliteString < ConnectionString
-  def adapter
-    @config["adapter"] == "sqlite3" ? "sqlite" : @config["adapter"]
-  end
-
-  def credentials
-    ""
-  end
-
-  def database
-    ""
-  end
-
-  def connection
-    "#{File.expand_path("../../", __FILE__)}/#{@config["database"]}"
-  end
-end
-
-class PostgresString < ConnectionString
-  def adapter
-    @config["adapter"] == "postgresql" ? "postgres" : @config["adapter"]
-  end
-end
-
-class ConnectionStringFactory
-  def self.string_for_config config
-    con_string_object(config).string
-  end
-
-  private
-  def self.con_string_object config
-    adapters = {
-      /postgre/ => proc{ PostgresString.new(config) },
-      /sqlite/  => proc{ SqliteString.new(config) }
-    }
-    proc_to_create = adapters.select{ |regex, obj| regex =~ config["adapter"] }.values[0]
-    proc_to_create.call
-  end
-end
-
-def database_url
-  require "yaml"
-  require "erb"
-  database_yml = File.expand_path("../../config/database.yml", __FILE__)
-  database_config = YAML.load(ERB.new(File.read(database_yml)).result(binding))
-  config = database_config[ENV["RACK_ENV"]]
-  ConnectionStringFactory.string_for_config config
+$LOAD_PATH.unshift File.expand_path("../../vendor/sequelinha/lib", __FILE__)
+require "sequelinha"
+Sequelinha.configure do |config|
+  config.project_root = File.expand_path("../../", __FILE__)
 end
 
-ENV["DATABASE_URL"] ||= database_url
+# prepares interestie to run like a boss on heroku
+ENV["DATABASE_URL"] ||= Sequelinha.database_url
 
 require "interestie/connection"
 require "interestie/application"