Code: January 2021

Tuesday, 5 January 2021

Generate QR code using Googal API

Create and verify jwt tocken in nodeJs

========================Create const bcrypt = require('bcryptjs'); const jwt = require('jsonwebtoken'); exports.login = async (req, res, next) => { const email = req.query.email; const password = req.query.password; let loadedUser; try { var user = await User.findOne({ email: email }); if (!user) { res.status(200).json({ Message: 'A user with this email(' + email + ') could not be found.', Result: false }); } loadedUser = user; var isEqual = await bcrypt.compare(password, user.password); if (!isEqual) { const error = new Error('Wrong password!'); error.statusCode = 200; res.status(200).json({ Message: "'Wrong password!'", Result: false }); throw error; }; const token = jwt.sign( { email: loadedUser.email, userId: loadedUser._id.toString() }, 'somesupersecretsecret', { expiresIn: '1h' } ); res.status(200).json({ token: token, userId: loadedUser._id.toString(), Result: true, cdata: { email: loadedUser.email, password: loadedUser.password, _id: loadedUser._id, name: loadedUser.name } }); } catch (error) { res.status(201).json({ Message: error.message, response: error, Result: false }); } }; ===================== Verify const jwt = require('jsonwebtoken'); module.exports = (req, res, next) => { try { const authHeader = req.get('Authorization'); if (!authHeader) { const error = new Error('Not authenticated.'); error.statusCode = 401; throw error; } const token = authHeader.split(' ')[1]; let decodedToken; try { decodedToken = jwt.verify(token, 'somesupersecretsecret'); } catch (err) { err.statusCode = 500; throw err; } if (!decodedToken) { const error = new Error('Not authenticated.'); error.statusCode = 401; throw error; } req.userId = decodedToken.userId; next(); } catch (error) { res.status(500).json({ Message: error.message, response: error, Result: false }); } };

($toObjectId) stiing convert to ObjectId in MongoDb/Mongoose

Signal // .find({ subscriberId: req.query.subscriberId }) .aggregate([ { "$addFields": { "mentorId0": { "$toString": "$mentorId" } } }, { "$addFields": { "mentorIdObj": { "$toObjectId": "$mentorId" } } }, // { "$match": {"subscriberId": subscriberId } }, { "$lookup": { "from": "subscribementors", "localField": "mentorId0", "foreignField": "mentorId", "as": "mentor" }, }, { $match: { // "mentorId": "5fdb1f7b807d6916186428bf", "mentor.subscriberId": subscriberId // "mentor.mentorId": "5fdb1f7b807d6916186428bf" // } // "subscriberId": "5fdb1b4890d271394844e20a" // "mentor":[{"subscriberId":subscriberId}] } }, { "$lookup": { "from": "mentors", "foreignField": "_id", "localField": "mentorIdObj", "as": "mentorDetail" } }, // { "$project":{$cond:{"mentor":{"subscriberId":subscriberId}}} } // {"$project":{"subscriberId":1,"mentorId":1,"mentor":{name:1,email:1,status:1}}} ]) .then(mySignal => { res.send({ mySignal: mySignal }); }).catch(err => { res.status(500).send({ Message: err.message, Result: false, data: err }); })

($toString)ObjectId convert to string in MongoDb /Mongoose

Monday, 4 January 2021

$project in MogooDb/Mongoose

SubscribeMentor // .find({ subscriberId: req.query.subscriberId }) .aggregate([ { "$addFields": { "mentorId": { "$toObjectId": "$mentorId" } } }, { "$match": { "subscriberId": req.query.subscriberId } }, { "$lookup": { "from": "mentors", "foreignField": "_id", "localField": "mentorId", "as": "mentor" } }, { "$project": { "subscriberId": 1, "mentorId": 1, "mentor": { name: 1, email: 1, status: 1 } } } ]) .then(mymenotrs => { res.send({ myMentors: mymenotrs }); }).catch(err => { res.status(500).send({ Message: err.message, Result: false, data: err }); })

updateOne({ }) in MogoDb/ mongoose

Mentor.updateOne({ _id: req.body.id }, req.body) .then(result => { if (result.ok == 1) { res.status(201).json({ Message: 'Mentor Updated!', response: result, Result: true }); } else { res.status(201).json({ Message: 'Note Mentor Updated!', response: result, Result: false }); } }) .catch(err => { if (!err.statusCode) { err.statusCode = 500; } next(err); });

deleteOne({}) in MogoDb

Mentor.deleteOne({ _id: req.query._id }) .then(result => { if (result.ok == 1) { res.status(201).json({ Message: 'Mentor Remove!', response: result, Result: true }); } else { res.status(201).json({ Message: 'Note Mentor Remove!', response: result, Result: false }); } }) .catch(err => { if (!err.statusCode) { err.statusCode = 500; } next(err); });

momentJs in NodeJs (Date change)

save() in MongoDb/Mongoose

subscriberPlan.save() .then(result => { if (result._id) { res.status(201).json({ Message: 'Plan created!', response: result, Result: true }); } else { res.status(201).json({ Message: 'Plan Not created!', response: result, Result: false }); } }) .catch(err => { if (!err.statusCode) { // err.statusCode = 500; res.status(201).json({ response: err, Message: err.message, Result: false }); } next(err); });

find() in MongoDb

Subscriber.find() .then(user => { loadedUser = user; res.status(200).json({ users: loadedUser }); }) .catch(err => { if (!err.statusCode) { err.statusCode = 500; } next(err); });

bcrypt.compare Password in nodeJs

Subscriber.findOne({ email: email }) .then(user => { if (!user) { res.status(200).json({ Message: 'A user with this email(' + email + ') could not be found.', Result: false }); // const error = new Error('A user with this email(' + email + ') could not be found.'); // error.statusCode = 401; // throw error; } loadedUser = user; console.log("user", user) return bcrypt.compare(password, user.password); }) .then(isEqual => { if (!isEqual) { const error = new Error('Wrong password!'); error.statusCode = 200; res.status(200).json({ Message: "'Wrong password!'", Result: false }); throw error; } const token = jwt.sign( { email: loadedUser.email, userId: loadedUser._id.toString() }, // 'somesupersecretsecret', 'asas', { expiresIn: '1h' } ); res.status(200).json({ token: token, userId: loadedUser._id.toString(), Result: true, cdata: { email: loadedUser.email, // password:loadedUser.password, _id: loadedUser._id, name: loadedUser.name, phone: loadedUser.phone, address: loadedUser.address, status: loadedUser.status, plans: loadedUser.plans, } }); }) .catch(err => { if (!err.statusCode) { err.statusCode = 500; } next(err); });

bcrypt password in nodeJs

bcrypt .hash(password, 12) .then(hashedPw => { const subscriber = new Subscriber({ email: email, password: hashedPw, name: name, status: 0 }); return subscriber.save(); }) .then(result => { res.status(201).json({ message: 'User created!', userId: result._id, Result: true }); }) .catch(err => { if (!err.statusCode) { err.statusCode = 500; } next(err); });

aggregate in mongoDb 1 collection connect with 2 collection

3 level object in MongoDb Condition

SubscribePlan.aggregate([ { $match: { "subscriberId": subscriberId } }, { "$addFields": { "planId1": { "$toString": "$planId" } } }, { "$lookup": { "from": "Signal", // "let": { "planId0": "$package_id", "mentorId": "$mentorId" }, "let": { "planId0": "$planId" },//privous collection "pipeline": [ { "$match": { "$expr": { "$eq": ["$package_id", "$$planId0"] } } }, { "$lookup": { "from": "mentors", "let": { "mentorId0": { "$toObjectId": "$mentorId" } }, //privous collection "pipeline": [ { "$match": { "$expr": { "$eq": ["$_id", "$$mentorId0"] } } } ], "as": "mentorDetail", } }, { "$unwind": "$mentorDetail" } ], "as": "signal", } }, { "$unwind": "$signal" } ]) .then(mySignal => { res.send({ myPlamSignals: mySignal }); }).catch(err => { res.status(500).send({ Message: err.message, Result: false, data: err }); })

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