用关联序列化插入数据答案

【问题标题】：Sequelize insert data with association用关联序列化插入数据
【发布时间】：2019-01-07 16:39:37
【问题描述】：

vegetable.js

...
var Vegetable = sequelize.define('Vegetable', {
 recipeId: { allowNull: false, ... },
 name: { ... },
});

Vegetable.association = models => {
 Vegetable.belongsTo(models.Recipe);
};
...

recipe.js

...
var Recipe = sequelize.define('Recipe', {
 id: { ... },
 name: { ... },
 ...
});

Recipe.association = models => {
 Recipe.hasMany(models.Vegetable, {as: 'vegetables'});
};

Recipe.insert = recipe => {
 const { Vegetable } = require('./vegetable');
 return Recipe.create({
  name: 'asdf',
  vegetables: [{name: 'asdf'}],
  ...
 }, {
  include: [{
   model: Vegetable,
   as: vegetables',
  }],
 });
};
...

结果

SequelizeValidationError: notNull Violation: Vegetable.recipeId 不能为空

为什么 Vegetable.recipeId 没有用 Recipe.id 填充？

是否存在通过关联插入数据的最佳做法？

【问题讨论】：

标签： javascript node.js express sequelize.js

【解决方案1】：

当 hasMany 选项中没有定义外键时，sequelize 会自动生成。模型和数据库列定义的不匹配可能会导致这样的错误。你可能也定义了外键。

Recipe.association = models => {
 Recipe.hasMany(models.Vegetable, {foreignKey: 'recipeId', as: 'vegetables'});
};

【讨论】：