class User
  include FlexiModel
  _string :name, :email
  _text :bio
  validates_presence_of :name, :email
end

User.create name: 'hasan', email: '[email protected]', bio: 'Ruby developer'
#=> #<User:...>

User.find(1)

User.where(name: 'hasan')
#=> #<...::Criteria...> # Instance of criteria object

class Blog
  include FlexiModel
  _string :title
  _text :content
  belongs_to :user
end

class User
  include FlexiModel
  _string :name
  has_many :blogs
end

# Create records
user = User.create(name: 'nafi')
Blog.create(title: 'Hello world', content: 'Hello content', user: user)

# Find all related blogs
user.blogs

# Find parent record
user.blogs.first.user

class User
  inlude FlexiModel
  _string :name
  has_and_belongs_to_many :roles
end

class Role
  include FlexiModel
  _string :name
  has_and_belongs_to_many :users
end

# Create user with roles
User.create(name: 'khan', roles: [Role.create(name: 'admin'), Role.create(name: 'moderator')])

# Find user roles
user = User.where(name: 'khan').first
user.roles

user = User.where(...)
user.update_attribute :name, 'raju'

user = User.where(...)
user.update_attributes name: 'raju', email: '[email protected]'

user.destroy
User.where(...conditions...).destroy_all