Sails.js controller not inserting into Mongo database - mongodb

I've been all over SO and Sailsjs.org trying to figure out what's going wrong, and to no avail. Just trying to learn the basics of SailsJS. I have a UserController, whose create() method gets called when a POST request is sent to /user.
create: function (req, res) {
var params = req.params.all();
User.create({
name: params.FirstName + ' ' + params.LastName,
email: params.Email,
password: params.Password,
jobTitle: params.JobTitle
}).exec(function createCB(err,created)
{
created.save(function(err)
{
// No error . . . still nothing in db
});
return res.json({name: created.name, jobTitle: created.jobTitle, email: created.email, password: created.password});
});
}
No errors here. All the request params are coming in fine and going back to the client without trouble. But nothing is actually being written to the database.
In development.js:
connections: {
mongo: {
adapter: 'sails-mongo',
host: 'localhost',
port: 27017,
// user: 'username',
// password: 'password',
database: 'sails_test'
}
},
models: {
connection: 'mongo'
}
I've tried this with the above both there in development.js, as well as separately in connections.js and models.js, respectively. No difference.
In User.js:
attributes: {
FirstName : { type: 'string' },
LastName : { type: 'string' },
Email : { type: 'string' },
Password : { type: 'string' },
JobTitle : { type: 'string' }
}
My front end request:
$.ajax({
method: 'post',
url: '/user',
data: {
FirstName: 'Yo',
LastName: 'Momma',
Email: 'yourmom#yourdadshouse.com',
Password: 'YouWish123',
JobTitle: 'Home Maker Extraordinaire'
},
success: function (sailsResponse)
{
$('#result').html(sailsResponse).fadeIn();
},
error: function()
{
console.log('error');
}
});
Again, none of this is producing an explicit error. There is just nothing being inserted into the database. Or if there is, I don't know how to find it. I've confirmed the existence of this db in the mongo shell, thusly:
show dbs
My db, sails_test shows up in the list. And I've confirmed that there isn't anything in it like so:
db.sails_test.find()
I would very much appreciate some guidance here :)
Update:
Turns out the data is being written just fine. I'm just unable to query the database from the command line. I confirmed this by first creating a sample user, and then using Waterline's findOne() method:
User.findOne({FirstName: params.FirstName}).exec(function (err, user) {
if (err) {
res.send(400);
} else if (user) {
return res.json({firstName: user.FirstName, lastName: user.LastName, jobTitle: user.JobTitle, email: user.Email, password: user.Password});
} else {
return res.send('no users match those criteria');
}
});
The above works as expected. So my problem now is simply that I cannot interact with the database from the command line. db.<collectionName>.find({}) produces nothing.

This was simply a failure to understand the MongoDb docs. I read db.collection.find({}) as DatabaseName.CollectionName.find({}), when you literally need to use db. So if my database is Test, and my collection is Users, the query is use Test, and then db.Users.find({}).
Also of note, 3T Mongo Chef is a pretty rockin' GUI (graphical user interface) for nosql databases, and it's free for non-commercial use.

Related

How can I retrieve an id from MongoDB create operation during a transaction?

I am trying to create an audit trail using Apollo Server and Mongoose. When a user initially registers, I create a document in the users collection and a document in the history collection for each piece of data they provided (username, password, email, etc) . For each history collection document, I include the id for the user document to create a relationship. Works perfectly.
However, when I add a transaction in (see below), the userId for the user document comes back as undefined, so I cannot add it to the history entry documents. I am assuming that the id for a document does not get created until the entire transaction has been completed?
Any ideas?
Mutation: {
register: async (_, { data }) => {
// Start a mongo session & transaction
const session = await mongoose.startSession()
session.startTransaction()
try {
// Hash password and create user
const hashedPassword = await bcrypt.hash(data.password, 12)
const user = await User.create(
[{ ...data, password: hashedPassword }],
{ session }
)
// Add history entries
HistoryEntry.create([
{
user: user.id,
action: 'registered'
},
{
user: user.id,
action: 'set',
object: 'profile',
instance: user.id,
property: 'firstName',
value: firstName
},
{
user: user.id,
action: 'set',
object: 'profile',
instance: user.id,
property: 'lastName',
value: lastName
},
{
user: user.id,
action: 'set',
object: 'profile',
instance: user.id,
property: 'password'
}
])
if (loginType === 'email') {
HistoryEntry.create({
user: user.id,
action: 'set',
object: 'profile',
instance: user.id,
property: 'email',
value: login
})
}
if (loginType === 'mobile') {
HistoryEntry.create({
user: user.id,
action: 'set',
object: 'profile',
instance: user.id,
property: 'mobile',
value: login
})
}
// commit the changes if everything was successful
await session.commitTransaction()
return {
ok: true,
user
}
} catch (err) {
// if anything fails above, rollback the changes in the transaction
await session.abortTransaction()
return formatErrors(err)
} finally {
// end the session
session.endSession()
}
}
}
If you think about it, how can you add a HistoryEntry if you haven't added User yet? It's not a 'history' as you are currently doing it. I believe you got two options here - set _id on User manually new Schema({ _id: { type: Schema.ObjectId, auto: true }}) and then generate it within the transaction: var userId = ObjectId(); and use for both User and History Entries.
And the second option, more semantically correct in this context, I believe - you should attach to post-save hook:
schema.post('save', function(doc) {
console.log('%s has been saved', doc._id);
});
So, whenever an User is created, a post-save hook is fired to update History.
Came across the same issue recently, hope you have figured it out already. I may add this for future seekers.
Following create function returns an array of created documents.
const user = await User.create(
[{ ...data, password: hashedPassword }],
{ session }
);
Therefore access the user id as user[0]._id
Pass the session also to HistoryEntry.create()
HistoryEntry.create([{...},{...}], {session})
Note: In this use case, I personally prefer #marek second option to use a post-save hook.

how to connect postgresql with graphql [duplicate]

GraphQL has mutations, Postgres has INSERT; GraphQL has queries, Postgres has SELECT's; etc., etc.. I haven't found an example showing how you could use both in a project, for example passing all the queries from front end (React, Relay) in GraphQL, but to a actually store the data in Postgres.
Does anyone know what Facebook is using as DB and how it's connected with GraphQL?
Is the only option of storing data in Postgres right now to build custom "adapters" that take the GraphQL query and convert it into SQL?
GraphQL is database agnostic, so you can use whatever you normally use to interact with the database, and use the query or mutation's resolve method to call a function you've defined that will get/add something to the database.
Without Relay
Here is an example of a mutation using the promise-based Knex SQL query builder, first without Relay to get a feel for the concept. I'm going to assume that you have created a userType in your GraphQL schema that has three fields: id, username, and created: all required, and that you have a getUser function already defined which queries the database and returns a user object. In the database I also have a password column, but since I don't want that queried I leave it out of my userType.
// db.js
// take a user object and use knex to add it to the database, then return the newly
// created user from the db.
const addUser = (user) => (
knex('users')
.returning('id') // returns [id]
.insert({
username: user.username,
password: yourPasswordHashFunction(user.password),
created: Math.floor(Date.now() / 1000), // Unix time in seconds
})
.then((id) => (getUser(id[0])))
.catch((error) => (
console.log(error)
))
);
// schema.js
// the resolve function receives the query inputs as args, then you can call
// your addUser function using them
const mutationType = new GraphQLObjectType({
name: 'Mutation',
description: 'Functions to add things to the database.',
fields: () => ({
addUser: {
type: userType,
args: {
username: {
type: new GraphQLNonNull(GraphQLString),
},
password: {
type: new GraphQLNonNull(GraphQLString),
},
},
resolve: (_, args) => (
addUser({
username: args.username,
password: args.password,
})
),
},
}),
});
Since Postgres creates the id for me and I calculate the created timestamp, I don't need them in my mutation query.
The Relay Way
Using the helpers in graphql-relay and sticking pretty close to the Relay Starter Kit helped me, because it was a lot to take in all at once. Relay requires you to set up your schema in a specific way so that it can work properly, but the idea is the same: use your functions to fetch from or add to the database in the resolve methods.
One important caveat is that the Relay way expects that the object returned from getUser is an instance of a class User, so you'll have to modify getUser to accommodate that.
The final example using Relay (fromGlobalId, globalIdField, mutationWithClientMutationId, and nodeDefinitions are all from graphql-relay):
/**
* We get the node interface and field from the Relay library.
*
* The first method defines the way we resolve an ID to its object.
* The second defines the way we resolve an object to its GraphQL type.
*
* All your types will implement this nodeInterface
*/
const { nodeInterface, nodeField } = nodeDefinitions(
(globalId) => {
const { type, id } = fromGlobalId(globalId);
if (type === 'User') {
return getUser(id);
}
return null;
},
(obj) => {
if (obj instanceof User) {
return userType;
}
return null;
}
);
// a globalId is just a base64 encoding of the database id and the type
const userType = new GraphQLObjectType({
name: 'User',
description: 'A user.',
fields: () => ({
id: globalIdField('User'),
username: {
type: new GraphQLNonNull(GraphQLString),
description: 'The username the user has selected.',
},
created: {
type: GraphQLInt,
description: 'The Unix timestamp in seconds of when the user was created.',
},
}),
interfaces: [nodeInterface],
});
// The "payload" is the data that will be returned from the mutation
const userMutation = mutationWithClientMutationId({
name: 'AddUser',
inputFields: {
username: {
type: GraphQLString,
},
password: {
type: new GraphQLNonNull(GraphQLString),
},
},
outputFields: {
user: {
type: userType,
resolve: (payload) => getUser(payload.userId),
},
},
mutateAndGetPayload: ({ username, password }) =>
addUser(
{ username, password }
).then((user) => ({ userId: user.id })), // passed to resolve in outputFields
});
const mutationType = new GraphQLObjectType({
name: 'Mutation',
description: 'Functions to add things to the database.',
fields: () => ({
addUser: userMutation,
}),
});
const queryType = new GraphQLObjectType({
name: 'Query',
fields: () => ({
node: nodeField,
user: {
type: userType,
args: {
id: {
description: 'ID number of the user.',
type: new GraphQLNonNull(GraphQLID),
},
},
resolve: (root, args) => getUser(args.id),
},
}),
});
We address this problem in Join Monster, a library we recently open-sourced to automatically translate GraphQL queries to SQL based on your schema definitions.
This GraphQL Starter Kit can be used for experimenting with GraphQL.js and PostgreSQL:
https://github.com/kriasoft/graphql-starter-kit - Node.js, GraphQL.js, PostgreSQL, Babel, Flow
(disclaimer: I'm the author)
Have a look at graphql-sequelize for how to work with Postgres.
For mutations (create/update/delete) you can look at the examples in the relay repo for instance.
Postgraphile https://www.graphile.org/postgraphile/ is Open Source
Rapidly build highly customisable, lightning-fast GraphQL APIs
PostGraphile is an open-source tool to help you rapidly design and
serve a high-performance, secure, client-facing GraphQL API backed
primarily by your PostgreSQL database. Delight your customers with
incredible performance whilst maintaining full control over your data
and your database. Use our powerful plugin system to customise every
facet of your GraphQL API to your liking.
You can use an ORM like sequelize if you're using Javascript or Typeorm if you're using Typescript
Probably FB using mongodb or nosql in backend. I've recently read a blog entry which explain how to connect to mongodb. Basically, you need to build a graph model to match the data you already have in your DB. Then write resolve, reject function to tell GQL how to behave when posting a query request.
See https://www.compose.io/articles/using-graphql-with-mongodb/
Have a look at SequelizeJS which is a promise based ORM that can work with a number of dialects; PostgreSQL, MySQL, SQLite and MSSQL
The below code is pulled right from its example
const Sequelize = require('sequelize');
const sequelize = new Sequelize('database', 'username', 'password', {
host: 'localhost',
dialect: 'mysql'|'sqlite'|'postgres'|'mssql',
pool: {
max: 5,
min: 0,
acquire: 30000,
idle: 10000
},
// SQLite only
storage: 'path/to/database.sqlite',
// http://docs.sequelizejs.com/manual/tutorial/querying.html#operators
operatorsAliases: false
});
const User = sequelize.define('user', {
username: Sequelize.STRING,
birthday: Sequelize.DATE
});
sequelize.sync()
.then(() => User.create({
username: 'janedoe',
birthday: new Date(1980, 6, 20)
}))
.then(jane => {
console.log(jane.toJSON());
});

Unhandled promise rejection: Error: URL malformed, cannot be parsed

I am new to aws and mongodb at the same time, so I'm stuck at a very basic point in trying to connect to my mongo databse, hosted on an amazon linux ec2 instance. The reason is, I'm not able to build the path to my database.
Here is what I'm trying to use:
mongoose.connect('mongod://ec2-user#ec2-XX-XX-XXX-XXX-XX.compute-1.amazonaws.com:27017/test' )
And here is the result of my test lambda function:
UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): Error: URL malformed, cannot be parsed
I'm using mongodb 3.6.5.
Mongoose 5.x supports following syntax for authorization and also make sure you have not used any special character in url like #,-,+,>
mongoose.connect(MONGO_URL, {
auth: {
user: MONGO_DB_USER,
password: MONGO_DB_PASSWORD
}
})
Or if you want to remove deprication warning Avoid “current URL string parser is deprecated"
Add option useNewUrlParser
mongoose.connect(MONGO_URL, {
auth: {
user: MONGO_DB_USER,
password: MONGO_DB_PASSWORD
},
{ useNewUrlParser: true }
})
My issue was a more simple URI issue. Since there was an # character in the mongod address.
I had to use this:
return mongoose.connect(encodeURI(process.env.DB_CONNECT)); //added ');'
If you used the following URI in your environment file for example
MongoDB://<dbuser>:<dbpassword>#ds055915.mlab.com:55915/fullstack-vue-graphql
Make sure your password inMONGOD_URI does not have a special character like #. I had used # as part of my password character and was getting the error. After I removed special characters from my DB Password, all worked as expected.
In my case the below worked fine.
Inside db.js
const mongoose = require('mongoose');
const MONGODB_URI = "mongodb://host-name:27017/db-name?authSource=admin";
const MONGODB_USER = "mongouser";
const MONGODB_PASS = "myasri*$atIP38:nG*#o";
const authData = {
"user": MONGODB_USER,
"pass": MONGODB_PASS,
"useNewUrlParser": true,
"useCreateIndex": true
};
mongoose.connect(
MONGODB_URI,
authData,
(err) => {
if (!err) { console.log('MongoDB connection succeeded.'); }
else { console.log('Error in MongoDB connection : ' + JSON.stringify(err, undefined, 2)); }
}
);
Note:
My Node version is 10.x
MongoDb server version is 3.6.3
mongoose version is ^5.1.2
I just want update the answer from #anthony-winzlet, because I have same error and I has solve with this code.
mongoose.connect(url, {
auth: {
user:'usrkoperasi',
password:'password'
},
useNewUrlParser:true
}, function(err, client) {
if (err) {
console.log(err);
}
console.log('connect!!!');
});
I just add callback and useNewUrlParser:true. I use "mongoose": "^5.2.7",.
Happy coding!
If you deployed your app to Heroku make sure you updated the Config Vars as they are in your .env file. At least, this was my case.
I know this question has accepted answer, but this is what worked for me:
I'm using Mongoose 6.0.5 and Mongodb 5.0.6, with authentication enabled and with special character (%) in the password:
mongoose.connect('mongodb://localhost:27017', {
auth: { username: "myusername", password: "mypassword%" },
dbName: "mydbname",
authSource: "mydbname",
useNewUrlParser: true,
useUnifiedTopology: true,
}, function(err, db) {
if (err) {
console.log('mongoose error', err);
}
});
Many solutions had only user and pass for auth that needed username and password instead. Also it needed dbName to get access to mydb's collections.
I have same problem but problem with password
should'nt special character
password not use like this Admin#%+admin.com wrong
password use like this Admin right
or any password you wanna use

Sailsjs Model Object Not Returning Data For Postgresql

I have the following in my Sailsjs config/adapter.js:
module.exports.adapters = {
'default': 'postgres',
postgres : {
module : 'sails-postgresql',
host : 'xxx.compute-1.amazonaws.com',
port : 5432,
user : 'xxx',
password : 'xxx',
database : 'xxx',
ssl : true,
schema : true
}
};
And in models/Movie.js:
Movie = {
attributes: {
tableName: 'movies.movies',
title: 'string',
link: 'string'
}
};
module.exports = Movie;
In my controller:
Movie.query("SELECT * FROM movies.movies", function(err, movies) {
console.log('movies', movies.rows);
});
movies.rows DOES return the correct data
However:
Movie.find({ title: 'Frozen' }, function(err, movies) {
console.log('movies', movies)
});
movies returns an EMPTY ARRAY
So it seems all connections are good because the raw query works perfectly.
Could there be something I am doing wrong with setting up the Movie.find() or with models/Movie.js?
Does the tableName attribute not support postgresql schema_name.table_name?
First off, you need to move tableName out of attributes, since it's a class-level property. Second, sails-postgresql does have some (very undocumented) support for schemas, using the meta.schemaName option:
Movie = {
tableName: 'movies',
meta: {
schemaName: 'movie'
},
attributes: {
title: 'string',
link: 'string'
}
};
module.exports = Movie;
You can give that a try, and if it doesn't work, either move your table into the public schema, or nudge the author of the schemaName support for help.

Cannot save a document in Mongoose - Validator required failed for path error

Following is my schema:
var userSchema = new Schema({
username: {
type: String,
required: true
},
password: {
type: String,
required: false
}
});
Now, when I attempt to save a document of the above schema, I get the following error:
{ message: 'Validation failed',
name: 'ValidationError',
errors:
{ username:
{ message: 'Validator "required" failed for path username',
name: 'ValidatorError',
path: 'username',
type: 'required' } } }
The above is the error object returned by mongoose upon save. I searched for this error but could not understand what is wrong. The document that I am trying to save is as follows:
{
username: "foo"
password: "bar"
}
Any idea what this means? I searched the mongoose docs too but could not find anything under the validation section.
First, you are missing a comma (,) after foo.
Now, is { username: "foo", password: "bar" } JSON sent via http, our an actual object in your server-side code ?
If it is, try to console.log(youVariable.username) and see if it shows undefined or the value foo. If you see undefined, then your object is not parsed properly.
You can make sure that whom ever is sending the POST request is sending a "application/json" in the header, you could be receiving something else, thus your JSON isn't parsed to a valid javascript object.