api/models/vegetables_pictures.js

module.exports = (sequelize, DataTypes) => {
  const vegetablePictures = sequelize.define('vegetablePictures', {
    url: DataTypes.STRING,
    order: DataTypes.INTEGER,
    vegetableId: {
      type: DataTypes.INTEGER,
      references: 'vegetables',
      referencesKey: 'id'
    }
  }, {})
  vegetablePictures.associate = function(models) {
    vegetablePictures.hasOne(models.vegetables, {
      as: 'Vegetables',
      foreignKey: 'id'
    })
  }
  return vegetablePictures
}