Sequelize - 将模型映射到字段

Question

我正在制作两个模型：Article 和 User，Article 模型包含 Author 和 Editor 字段，它们必须包含指向 User 表中项目的链接。如何映射它，以便该字段包含两个对这些字段中的 User 表的查找？

module.exports = (sequelize, DataTypes) => {
  const Article = sequelize.define('Article', {
    title: DataTypes.STRING,
    html: DataTypes.STRING,
    author: DataTypes.INTEGER,
    editor: DataTypes.INTEGER,
    deletedAt: DataTypes.DATE
  }, {});

  Article.associate = function(models) {
  };

  return Article;
}; 

module.exports = (sequelize, DataTypes) => {
  const User = sequelize.define('User', {
    username: DataTypes.STRING,
    password_hash: DataTypes.STRING,
    role: DataTypes.STRING,
    email: DataTypes.STRING,
    deletedAt: DataTypes.STRING
  }, {});

  User.associate = function(models) {
  };

  return User;
};

Answer 1

您必须在两个模型之间创建关联。

module.exports = (sequelize, DataTypes) => {
  const Article = sequelize.define('Article', {
    title: DataTypes.STRING,
    html: DataTypes.STRING,
    author: DataTypes.INTEGER,
    editor: DataTypes.INTEGER,
    deletedAt: DataTypes.DATE
  }, {});

  Article.associate = function(models) {
    Article.belongsTo(models.User, { foreignKey: 'article_id' });
  };

  return Article;
}; 

module.exports = (sequelize, DataTypes) => {
  const User = sequelize.define('User', {
    username: DataTypes.STRING,
    password_hash: DataTypes.STRING,
    role: DataTypes.STRING,
    email: DataTypes.STRING,
    deletedAt: DataTypes.STRING
  }, {});

  User.associate = function(models) {
    User.hasMany(models.Articles, { foreignKey: 'user_id'})
  };

  return User;
};

要查询带有用户的文章，您必须在查询中包含用户。

Article.findAll({
include: [User],
});

https://sequelize.org/master/manual/assocs.html