js序列化嵌套查询/遍历结果

Question

I have a first query where I get a list of objects looking like this:

{
   id
   idmarker
   idcategory
}

 MarkerCategories.findAll({where: {idmarker: data.dataValues.id}})

This would get me a resultset with the categoryIds belonging to the provided marker id. How can I save the id properties of the resultset into an array named ids so I can run the following query to get the actual Category details:

 Categories.findAll({where: {id: { $in: ids}}});

Answer 1

If you've already defined association between Categories and Markers models, you can just do the following:

 Markers.findAll({where: { id: markerId }, include: [ Categories ]})

that will return a Marker with a related Categories