我試圖通過使用藍鳥Promisify Mongoose連接,我需要減少我的回調,所以我用bluebird.But它給了我下面的錯誤。Promiseifying Mongoose Connect中的類型錯誤
var expect = require('chai').expect;
var mongoose = require('mongoose');
var jobModel = require('../models/job');
var Promise = require('bluebird');
function resetJobs() {
return new Promise(function(resolve, reject) {
mongoose.connection.collections['jobs'].drop(resolve, reject);
});
};
function findJobs(query) {
return Promise.cast(mongoose.model('Job').find({}).exec());
};
var connectDB = Promise.promisify(mongoose.connect,mongoose);
describe('get jobs', function() {
it('Should not be empty since jobs are seeded', function(done) {
connectDB('mongodb://localhost/jobfinder').then(function() {
resetJobs()
.then(jobModel.seedJobs)
.then(findJobs).then(function(jobList) {
expect(jobList.length).to.be.at.least(1);
done();
});
});
});
});
但是這給了我一個錯誤我使用
Unhandled rejection TypeError: Cannot read property 'connection' of undefined
at Mongoose.connect (F:\MyProjects\JobFinder\node_modules\mongoose\lib\index.js:232:18)
at tryCatcher (F:\MyProjects\JobFinder\node_modules\bluebird\js\release\util.js:11:23)
at ret (eval at <anonymous> (F:\MyProjects\JobFinder\node_modules\bluebird\js\release\promisify.js:184:12), <anonymous>:14:23)
at Context.<anonymous> (F:\MyProjects\JobFinder\test\jobs-data-spec.js:22:3)
包的版本如下
"bluebird": "^3.1.1",
"express": "^4.13.4",
"mongoose": "^4.3.6"
它似乎適用於下列代碼'var mongoose = require('mongoose'); var Promise = require('bluebird'); var connectDB = Promise.promisify(mongoose.connect,mongoose); console.log(connectDB);' – zangw
已添加完整代碼 – user2473015
它仍然正常運行,'var connectDB = Promise.promisify(mongoose.connect,mongoose); console.log(connectDB);''我猜你需要的'mongoose'模塊是不正確的... – zangw