如何定义小马实体的外键

Question

我找到了答案。棘手的是，必须在两个类别中定义关系

class Jobs(db.Entity):
    path = Required(str)
    date = Required(str)
    jobs = Set("Recipe")

class Recipe(db.Entity):
    job_id = Required(Jobs)    # must be foreign
    path = OptionalField(str)
    date = OptionalField(str)

Answer 1