返回值

Question

我有麻煩與函數（UCI）預期承諾的回報，但我在同一時間返回兩個當我登錄我得到它

uci promise Promise { 
2|wscontro | _bitField: 0, 
2|wscontro | _fulfillmentHandler0: undefined, 
2|wscontro | _rejectionHandler0: undefined, 
2|wscontro | _promise0: undefined, 
2|wscontro | _receiver0: undefined } 

我需要這個值傳遞到函數，並與uciData處理去......

ServicesController.prototype.updateWifi = function (req, res, next) { //this is what i call when i click on the button in the screen 
    createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'updateWifi', 'inicio'); 
    var data = req.body; 
    var state; 
    if(data.state=="1"){ 
     state=1; 
    } else if(data.state=="0"){ 
     state=0; 
    } 
    if (isEmptyObject(data)) { 
     res.status(400).send({error: errorMessage.emptyBody}); 
     return; 
    } 

    if (data.sn === undefined || data.sn === "") { 
     createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'updateWifi', 'Invalid serial number'); 
     res.status(400).send({error: "Invalid serial number"}); 
     return; 
    } 

    Database.Devices.getDeviceBySn(data.sn).then(function (device) { 
     createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'updateWifi', 'device', device); 
     createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'updateWifi', 'device.id', device[0].id); 

     var ifname=data.ifname; 
     return ServicesController.prototype.uci(device[0], "teste_wireless", "wifi", ifname, "disabled", data.state, true, true).then(function(wifiData){ 
      console.log('updateWifi ---> data',wifiData); 
      if (wifiData != undefined) { 
       res.status(404).end(); 
      } else { 
       console.log('updateDeviceInterface ', device[0].id, ' for ', ifname, ' to ', state); 
       Database.Services.updateWifiDeviceInterface(device[0].id, ifname, state); 
       res.status(200).send(wifiData); 
      } 
     }).catch(function (e) { 
      createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'updateWifi', e); 
      res.status(500).send(e); 
     }); 
    }); 
}  

ServicesController.prototype.uci = function(device, config, path, section, opt, value, apply, commit){ 
    createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'inicio'); 

    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'config', config); 
    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'path', path); 
    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'section', section); 
    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'option', opt); 
    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'value', value); 
    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'apply', apply); 
    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'commit', commit); 

    var values={opt:value}; 

    createLog('debug', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'session', radioAccess[device.id]); 

    var result; 

    Controllers.Ubus.uciRequest('set', {"config": config, "section": section, values}, device).then(function (uciData) { 
     console.log('uci uciData -->', uciData); //this gets undefined 

     if (uciData!=null) { 
      createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'depois do if do uciData'); 
      /*return new Promise(function (resolve, reject) { 
       return Controllers.Ubus.uciRequest('changes', config, device).then(function (dataAuth) { 
        if (dataAuth!=null) { 
         createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'Invalid serial number'); 
         res.status(400).send({error: "Cant apply changes"}); 
         return; 
        } 
       }).catch(function (e) { 
        createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
        reject(e); 
       }); 
      }).catch(function (e) { 
        createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
        reject(e); 
       }); 
     };*/ 
      if(commit){ 
       createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'commit'); 
       return new Promise(function (resolve, reject) { 
        Controllers.Ubus.uciRequest('commit', {"config": config}, device).then(function (dataCommit) { 
         if (dataCommit) { 
          createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'commit data', dataCommit); 
          if (dataCommit.result) { 
           if (dataCommit.result[0] == 0) { 
            result = dataCommit.result[1]; 
           } else { 
            resolve(null); 
           } 
          } else { 
           resolve(null); 
          } 
         } 
        }).catch(function (e) { 
         createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
         reject(e); 
        }); 
       }).catch(function (e) { 
        createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
        reject(e); 
       }); 
      } 
      if(apply){ 
       createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'apply'); 
       return new Promise(function (resolve, reject) { 
        Controllers.Ubus.fileExec(device.id, "exec", path, "restart").then(function (dataApply) { 
         if(dataApply){ 
          createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'apply data', dataApply); 
          if (dataApply.result) { 
           if (dataApply.result[0] == 0) { 
            result+= dataApply.result[1]; 
           } else { 
            resolve(null); 
           } 
          } else { 
           resolve(null); 
          } 
         } 
        }).catch(function (e) { 
         createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
         reject(e); 
        }); 
       }).catch(function (e) { 
        createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
        reject(e); 
       }); 
      } 
     } 
     createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'depois do fim do if do uciData'); 
    }).catch(function (e) { 
     createLog('error', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', e); 
    }); 
} 

Answer 1

此代碼需要maaaaaasssive重構。
但是，您可以使用Promise.all在2個承諾完成後返回。

看起來像這樣。

ServicesController.prototype.uci = function(device, config, path, section, opt, value, apply, commit){ 
    var values={opt:value}; 

    return Controllers.Ubus.uciRequest('set', {"config": config, "section": section, values}, device) 
     .then(function (uciData) { 
     var promises = []; 

     if (uciData!=null) { 
      createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), device.id, 'uci', 'depois do if do uciData'); 

      if (commit){ 
       createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'commit'); 
       var p1 = Controllers.Ubus.uciRequest('commit', {"config": config}, device) 
        .then(function (dataCommit) { 
        if (dataCommit && dataCommit.hasOwnProperty('result') && data.result[0] == 0) { 
         createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'commit data', dataCommit); 
         return dataCommit.result[1]; 
        } 
        }) 
       promises.push(p1); 
      } 

      if(apply){ 
       createLog('info', __dirname, __filename.slice(__dirname.length + 1, -3), null, 'uci', 'apply'); 
       var p2 = Controllers.Ubus.fileExec(device.id, "exec", path, "restart") 
        .then(function (dataApply) { 
        ... 
       }) 
       promises.push(p2); 
      } 
     } 
     return Promise.all(promises); 
     //the function is going to return an array like [dataCommit, applyCommit] or [undefined, undefined] depend of the commit/apply 
    }) 
}