Question

尝试使用sequelize内置的ORM方便，包括带有原始PostGIS查询的语法。

这个调用正确地加入了相关的promotionImage和类别表，就像我需要它一样，但是它并不像我需要那样对我的数据库进行地理查询：

  promotion.findAll({
    include: [{
      model: promotionImage
    }, {
      model: category
    }]
  }).then(promoters => {
    res.json(promoters)
  }).catch(err => {
    console.log('ERROR: ', err)
  })

另一方面，此查询正确地在提供的lat / lng范围内找到“促销”，但它没有正确加入关联的promotionImage和类别表：

    const query = '\
      SELECT * \
      FROM "promotions" \
      WHERE "promotions"."location" && ST_MakeEnvelope(:southWestLng, :southWestLat, :northEastLng, :northEastLat)'
    replacements = {
      southWestLng, 
      southWestLat, 
      northEastLng, 
      northEastLat
    }

  db.sequelize.query(query, {
    replacements,
    type: sequelize.QueryTypes.SELECT,
    model: promotion,
    include: [{
      model: promotionImage
    }, {
      model: category
    }]
  }).then(promoters => {
    res.json(promoters)
  }).catch(err => {
    console.log('ERROR: ', err)
  })

是否可以使用ST_MakeEnvelope语法进行查询，并使用sequelize和postGIS包含其他模型的数据？

Answer 1

Sequelize.query()不支持include，您可以Sequelize.fn()使用findAll

 promotion.findAll({
    where: {
       location: {
           $overlap: db.sequelize.fn('ST_MakeEnvelope', southWestLng, southWestLat, northEastLng, northEastLat)
       }
    },
    include: [{
      model: promotionImage
    }, {
      model: category
    }]
  }).then(promoters => {
    res.json(promoters)
  }).catch(err => {
    console.log('ERROR: ', err)
  })

如何使用sequelize执行原始PostGIS查询

1 个答案: