text: 
  
  module.exports = (sequelize, DataTypes) => {
    let burgers = sequelize.define("burgers", {
      burger_name: {
        type: DataTypes.STRING,
        allowNull: false, 
        validate: {
          notNull: true,
          len: [2,100]
        }
      },
      devoured: {
        type: DataTypes.BOOLEAN, 
        defaultValue: false,
          validate: {
           isBoolean:function (val) {
            return (typeof(val)=='boolean')
               }
          }
      }
    });
  
    burgers.associate = (models) => {
      burgers.belongsTo(models.Customers, {
      });
    };  
  
  
    return burgers;
  }