如何使用貓鼬羽毛適配器編寫聚合體？

Question

我是feathersjs框架的新手，並試圖編寫聚合查詢它不能正常工作。

hook.app.query = { 
    lookup: { 
     from: "orders", 
     localField:"serviceLocationId", 
     foreignField:"serviceLocationId", 
     as: "orders" 
    }, 
    match: { serviceLocationId : { $in: Array.from(new Set(reqArr)) } }, 
    limit: 14 
} 

hook.app.service('servicelocations') 
    .find(hook.app.query) 
    .then(result => { 
     console.log(result) 
    }) 

Answer 1

我們需要使用以下方式service.Model.aggregate那麼它的做工精細

function locations(hook) { 
    return new Promise((resolve,reject) =>{ 
     hook.app.service('location') 
      .Model.aggregate(hook.app.query) 
      .then(result => { 
      resolve(result) 
      }).catch(e=>{ 
      reject(e) 
      }) 
     }) 
}