Model 定义

Here is a typical model definition:

class Post extends Base {
  table = 'posts'
  fields = {
    id: 'String',
    author_id: 'String',
    title: 'String',
    public: 'String',
    clicks: 'Int',
    score: 'Float',
    author: 'Author'    // there is some other model called "Author"
  }

Why use string 'Int', 'Author'?

• There is indeed benefit from using Int, Author, such as typing and linting.
• The main reason of using string is to avoid circular dependencies: imagine you have a Post model that has Author field, and also a Author model that has Post field. It is not easy to get it work as expected. Nodejs is not handling circular dependency very well. You may want to refer to some info here.
• Don't worry about silent error: an error will be raised immediately if you do have a typo in the model name with detail debug info.