Sequelize Composite Foreign Key

Question

I have a database with the following tables:

CREATE TABLE IF NOT EXISTS `app_user` (
  `user_id` INT NOT NULL,
  `user_name` VARCHAR(45) NOT NULL,
  PRIMARY KEY          


        

Answer 1

Now Sequelize doesn't support composite foreign keys. This creates several problems.

1. When Sequelize creates a table, the table definition does not have a composite FK.
   To solve this problem I use the afterSync hook on the model and a function that adds a FK to the table if it does not exist. Example code.
2. When I use the findAll method with include such model, I use the include[].on option of the findAll method. Or if you don't use as many joins as I do, you can use scope when creating an association (see).