Fehler - ein Versprechen wurde in einem Handler erstellt, wurde aber nicht von ihm zurückgegeben

Question

Ich verwende Sails in einem Projekt mit dem Modul Async-Serie.

Ich habe unter der Warnung, wenn die Ausführung von Code:

"Warning: a promise was created in a handler but was not returned from it"

Hier ist mein Code:

addEntity: function (req, res){ **// LINE 11** 
 
    async.series([ 
 
     function (callback) { 
 
     Entities.create({ 
 
      name: req.body.entity.name, 
 
      type: req.body.entity.type.name 
 
     }).then(function (_entity) { 
 
      this.entity = _entity; 
 
      callback(); 
 
     }, function (err){ 
 
      res.send({message: "Issue ..."}); 
 
     }); 
 
     }, 
 
     function (callback) { **// LINE 24** 
 
     var where = { 
 
      caracteristique: { 'like': '%'+req.body.entity.caracteristique.name+'%'} 
 
     }; 
 
     Products.find(where).then(function (_pr) { 
 
      this.products = _pr; 
 
      callback(); 
 
     }, function (err){ 
 
      res.send({message: "Issue ..."}); 
 
     }); 
 
     }, 
 
     function (callback) { **// LINE 35** 
 
     this.products.forEach(function (el){ 
 
      delete el.id; 
 
      el.et_id = this.entity.et_id; 
 
      Products.create(el).then(function (_newPr) { 
 
      }, function(err) { 
 
      return res.send({message: "Issue ..."}) 
 
      }); 
 
      callback(); 
 
     }); 
 
     }, 
 
    ], function(err, results){ **// LINE 46** 
 
     if(err) return res.send({message: 'An Error occured'}); 
 
     res.json({'entity': this.entity}); 
 
    }); 
 
    }

Einzelheiten zum Fehler:

Warning: a promise was created in a handler but was not returned from it 
 
    at wrapper (/usr/local/lib/node_modules/sails/node_modules/lodash/index.js:3592:19) 
 
    at applyInOriginalCtx (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/utils/normalize.js:417:80) 
 
    at wrappedCallback (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/utils/normalize.js:320:18) 
 
    at callback.success (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/switchback/lib/normalize.js:33:31) 
 
    at _switch (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/switchback/lib/factory.js:58:28) 
 
    at /usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/create.js:248:9 
 
    at /usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:52:16 
 
From previous event: 
 
    at Deferred.toPromise (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/deferred.js:494:61) 
 
    at Deferred.then (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/deferred.js:505:15) 
 
    at async.series.callback.products.forEach.el.et_id (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:27:30) 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:713:13 
 
    at iterate (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:262:13) 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:274:29 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:44:16 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:718:17 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:167:37 
 
    at Entities.create.then.res.send.message (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:18:11) 
 
    at wrapper (/usr/local/lib/node_modules/sails/node_modules/lodash/index.js:3592:19) 
 
    at applyInOriginalCtx (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/utils/normalize.js:417:80) 
 
    at wrappedCallback (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/utils/normalize.js:320:18) 
 
From previous event: 
 
    at Deferred.then (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/deferred.js:505:27) 
 
    at async.series.where.caracteristique.like (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:16:12) 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:713:13 
 
    at iterate (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:262:13) 
 
    at async.forEachOfSeries.async.eachOfSeries (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:281:9) 
 
    at _parallel (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:712:9) 
 
    at Object.async.series (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:734:9) 
 
    at Object.module.exports.addEntity (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:11:11) 
 
    at wrapper (/usr/local/lib/node_modules/sails/node_modules/lodash/index.js:3095:19) 
 
    at routeTargetFnWrapper (/usr/local/lib/node_modules/sails/lib/router/bind.js:179:5) 
 
    at callbacks (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:164:37) 
 
    at param (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:138:11) 
 
    at pass (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:145:5) 
 
    at nextRoute (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:100:7) 
 
    at callbacks (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:167:11) 
 
    at /usr/local/lib/node_modules/sails/lib/router/bind.js:187:7 
 
    at module.exports (/Users/musecz/Lab/HUB/api/policies/sessionAuth.js:17:12) 
 
    at routeTargetFnWrapper (/usr/local/lib/node_modules/sails/lib/router/bind.js:179:5) 
 
    at callbacks (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:164:37) 
 
Unhandled rejection Error: Callback was already called. 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:43:36 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:718:17 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:167:37 
 
    at /Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:42:11 
 
    at Array.forEach (native) 
 
    at async.series.res.send.message (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:35:23) 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:713:13 
 
    at iterate (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:262:13) 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:274:29 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:44:16 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:718:17 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:167:37 
 
    at Products.find.then.res.send.message (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:29:11) 
 
From previous event: 
 
    at Deferred.then (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/deferred.js:505:27) 
 
    at async.series.where.caracteristique.like (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:16:12) 
 
    at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:713:13 
 
    at iterate (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:262:13) 
 
    at async.forEachOfSeries.async.eachOfSeries (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:281:9) 
 
    at _parallel (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:712:9) 
 
    at Object.async.series (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:734:9) 
 
    at Object.module.exports.addEntity (/Users/musecz/Lab/HUB/api/controllers/EntitiesController.js:11:11) 
 
    at wrapper (/usr/local/lib/node_modules/sails/node_modules/lodash/index.js:3095:19) 
 
    at routeTargetFnWrapper (/usr/local/lib/node_modules/sails/lib/router/bind.js:179:5) 
 
    at callbacks (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:164:37) 
 
    at param (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:138:11) 
 
    at pass (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:145:5) 
 
    at nextRoute (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:100:7) 
 
    at callbacks (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:167:11) 
 
    at /usr/local/lib/node_modules/sails/lib/router/bind.js:187:7 
 
    at module.exports (/Users/musecz/Lab/HUB/api/policies/sessionAuth.js:17:12) 
 
    at routeTargetFnWrapper (/usr/local/lib/node_modules/sails/lib/router/bind.js:179:5) 
 
    at callbacks (/usr/local/lib/node_modules/sails/node_modules/express/lib/router/index.js:164:37)

Answer 1

es auf diese Weise versuchen und prüfen Sie, ob Sie immer noch die Fehlermeldung erhalten ...

addEntity: function (req, res){ // LINE 11** 
    async.series([ 
    function (callback) { 
     Entities.create({ 
     name: req.body.entity.name, 
     type: req.body.entity.type.name 
     }).then(function (_entity) { 
     this.entity = _entity; 
     callback(); 
     }, function (err){ 
     callback(err); 
     //res.send({message: "Issue ..."}); 
     }); 
    }, 
    function (callback) { // LINE 24** 
     var where = { 
     caracteristique: { 'like': '%'+req.body.entity.caracteristique.name+'%'} 
     }; 
     Products.find(where).then(function (_pr) { 
     this.products = _pr; 
     callback(); 
     }, function (err){ 
     callback(err); 
     //res.send({message: "Issue ..."}); 
     }); 
    }, 
    function (callback) { // LINE 35** 
     this.products.forEach(function (el){ 
     delete el.id; 
     el.et_id = this.entity.et_id; 
     Products.create(el).then(function (_newPr) { 
      callback(); 
     }, function(err) { 
      callback(err); 
      //return res.send({message: "Issue ..."}) 
     }); 
     //callback(); 
     }); 
    } 
    ], function(err, results){ // LINE 46** 
    if(err) return res.send({message: 'An Error occured'}); 
    res.json({'entity': this.entity}); 
    }); 
}