class Tads6Patrick::ORM

Public Class Methods

atualizar(obj) click to toggle source
# File lib/tads6_patrick/orm.rb, line 36
def self.atualizar(obj)
  FileUtils.rm "#{path}/#{obj.id}.yml"
  File.open("#{path}/#{obj.id}.yml", "a") do |arquivo|
    arquivo.puts YAML.dump obj
    return obj.id
  end
end
criar(*atributos) click to toggle source
# File lib/tads6_patrick/orm.rb, line 3
def self.criar(*atributos)
  FileUtils.mkdir_p "#{path}"#caso o caminho especificado no path nao exista, este é criado
  id = proximo_id
  File.open("#{path}/#{id}.yml", "a") do |arquivo|
    obj = self.new atributos
    obj.id = id
    arquivo.puts YAML.dump obj
    return id
  end
end
listar() click to toggle source
# File lib/tads6_patrick/orm.rb, line 14
def self.listar
  @objs = []
  $/ = '\n\n'

  (1..ultimo_id).each do |id|
    _path = "#{path}/#{id}.yml"
    if File.exist?(_path)
      File.open(_path, "r").each do |obj|
        @objs << YAML.load(obj)
      end
    end
  end

  @objs
end
remove(id) click to toggle source
# File lib/tads6_patrick/orm.rb, line 44
def self.remove(id)
  FileUtils.rm "#{path}/#{id}.yml"
  return id
end
selecionar(id) click to toggle source
# File lib/tads6_patrick/orm.rb, line 30
def self.selecionar(id)
  listar.each do |obj|
    return obj if obj.id == id
  end
end

Private Class Methods

path() click to toggle source
# File lib/tads6_patrick/orm.rb, line 62
def self.path
  "db/#{self.to_s.downcase}"
end
proximo_id() click to toggle source
# File lib/tads6_patrick/orm.rb, line 66
def self.proximo_id
  ultimo_id.to_i + 1
end
quantidade_registros() click to toggle source
# File lib/tads6_patrick/orm.rb, line 51
def self.quantidade_registros
  Dir.glob("#{path}/*.yml").size + 1
end
ultimo_id() click to toggle source
# File lib/tads6_patrick/orm.rb, line 55
def self.ultimo_id
  files = Dir.entries("#{path}").sort_by do |file|
    File.ctime("#{path}/#{file}")
  end
  File.basename("#{path}/#{files.last}", ".yml").to_i
end