sequelize.js - 嵌套包含不提供结果

Question

我有三个关联模型，Product、CatalogMembership、Catalog 与这些关联

Product.hasMany(CatalogMembership, { foreignKey: 'product_id' });
CatalogMembership.hasOne(Catalog, { targetKey: 'catalog_id', foreignKey: 'id' });

当我执行此嵌套查询时

let products = await Product.findAll({
      where: {...},
      include: {
        model: CatalogMembership,
        where: { catalog_id: { [Op.in]: catalogIds } },
        include: {
          model: Catalog,
          attributes: ['name', 'id'],
        },
      },
    });

包括 CatalogMemberships，但目录为空:

console.log(products[0]) // -->
/*
{
  id: 1,
  catalog_memberships: [
    { id: 23,
      catalog_id: 15,
      catalog: null,
      ...
    },
    {
      id: 24,
      catalog_id: 16,
      catalog: null,
      ...
    }
  ],
  ...
}
*/

而且我确定有目录CatalogMembership.catalog_id === Catalog.id
我希望目录属性不会为空，而是类似于

{
  id: 15,
  name: 'MyCatalog'
}

Answer 1

hasOne Relation 中没有 targetKey 。有 foreignKey (目标表中的外键属性名称)和 sourceKey to(用作源表中关联键的属性名称)，默认情况下是源表的主键.

所以像这样使用，

CatalogMembership.hasOne(Catalog, { foreignKey: 'catalog_id', sourceKey: 'id' });