我一直致力于MEAN堆栈项目，目前还没有使用Angular。我被困在一个地方，我尝试了很多东西摆脱，但没有选择工作。我一直在使用偶发射器来处理Node.js的异步性质，以便顺序执行逻辑验证。我的代码是
flowController.on('12', function (combinedArray, finalPickSubListInsertArray) {
var dummyObject = [];
async.forEach(finalPickSubListInsertArray, function (element, callback) {
locationStoreModel.findOne({'_id': element.locationStoreId, 'activeStatus': 1}, function (err, locationRow) {
if (err) {
flowController.emit('ERROR', {message: "Location data missing! Records tampered/removed from system", status: 'error', statusCode: '404'});
} else {
pickSubListModel.find({'pickListId': pickListId, 'activeStatus': 1}).sort({'sequence': -1}).exec(function (err, pickSubListRow) {
if (err) {
res.json({message: 'Internal Error fetching pick sublists!', status: 'error', statusCode: '500'});
} else {
var sequence = (pickSubListRow.length == 0) ? 1 : (pickSubListRow[0].sequence + (dummyObject.length + 1));
var newPickSubList = new pickSubListModel();
newPickSubList.pickListId = pickListId;
newPickSubList.itemCode = itemCode;
newPickSubList.itemStoreId = element.itemStore;
newPickSubList.itemDescription = itemDescription;
newPickSubList.requiredQuantity = requiredQuantity;
newPickSubList.sequence = sequence;
newPickSubList.createdBy = createdBy;
newPickSubList.timeCreated = timeInInteger;
newPickSubList.save(function (err, insertedRecordDetails) {
if (err) {
res.json({message: 'INTERNAL SERVER ERROR, UNKNOWN SERVER ERROR HAS OCCURRED', status: 'error', statusCode: '500'});
} else {
pickListModel.update(
{'_id': pickListId},
{'$addToSet': {'pickSubLists': insertedRecordDetails._id.toString()}},
function (err) {
if (err) {
// error while adding records
res.json({message: "Unable to make update! Try again after some time.", status: 'error', statusCode: '500'});
} else {
dummyObject.push({process: 'done'});
callback();
}
});
}
});
}
});
}
});
}, function (err) {
if (err) {
res.json({message: 'Unable to create pick-sublist! Try again later.', status: 'error', statusCode: '304'});
} else {
res.json({message: 'New Pick-Sublist added into the system!', status: 'success', statusCode: '200'});
}
});
});
这里我试图将连续记录插入我的MongoDB集合中，并且插入的每个记录将获得递增的序列号。 我的问题是当我进入foreach然后记录被插入到集合中，但是所有记录都获得了相同的序列号，我想以增量方式。
我做了一系列11次验证，然后到达事件发射器12，现在是时候将记录插入数据库了。我的情况就像我吃了整只大象而只留下了尾巴。那尾巴越来越难以消化......
任何关于如何迎合它的建议都会非常感激......