Elixir是基于python界有名的ORM库SQLAlchemy作的封装。而且是轻量级的封装,它提供了更简单的方式来创建Python类并直接映射到关系数据库表(即通常所说的Active Record设计模式),类似于Django中的ORM。

示例：

class Person(Entity):      name = Field(String(128))      addresses = OneToMany('Address')    class Address(Entity):      email = Field(Unicode(128))      owner = ManyToOne('Person')

class Person(Entity):      id = Field(Integer, primary_key=True)      name = Field(String(50), required=True)      ssn = Field(String(50), unique=True)      biography = Field(Text)      join_date = Field(DateTime, default=datetime.datetime.now)      photo = Field(Binary, deferred=True)      _email = Field(String(20), colname='email', synonym='email'        class Admin( Party.Admin ):          verbose_name = _( 'Person' )          list_display = ['first_name', 'last_name', 'contact_mechanisms_email', 'contact_mechanis

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