sequelize associate method. about sequelize-to-json-schemas HOT 4 CLOSED

const Sequelize = require('sequelize');
const DataTypes = Sequelize.DataTypes;

module.exports = function(app) {
  const sequelizeClient = app.get('sequelizeClient');
  const Road = sequelizeClient.define(
    'roads',
    {
      id: {
        type: DataTypes.STRING,
        primaryKey: true,
        allowNull: false
      },
      length: {
        type: DataTypes.FLOAT,
        allowNull: false
      }
      
    },
    {
      createOrUpdate: true,

      hooks: {
        beforeCount(options) {
          options.raw = true;
        }
      }
    }
  );

  const models = sequelizeClient.models;
  // make sure Location model is defined before Road
  let Location = models.locations;
  Location.hasMany(Road, { foreignKey: 'originId' });
  Road.belongsTo(Location, { as: 'origin' });

  Location.hasMany(Road, { foreignKey: 'destinationId' });
  Road.belongsTo(Location, { as: 'destination' });


  return Road;
};