We Keep Coding

Sending parameters to Rest API for SQL Server

I have created a SQL server with a table that has data in on a server I have local access to. I have also created an "API" on that same server to get the information from the SQL server so it can be read by my angular application.
At the moment, I can read the rows in the SQL server and have them displayed in my angular application, but, I want to be able to update the SQL table from my angular app (through the API).
This is my API (sqlserver.js):
var express = require('express');
var app = express();
var cors = require('cors');
app.use(cors())
app.get('/', function (req, res) {
var sql = require("msnodesqlv8");
// config for your database
var config = "server=servername;Database=dataBaseName;Trusted_Connection=Yes;Driver={SQL Server Native Client 11.0}"
const query = "SELECT * FROM tableName";
// connect to your database
sql.query(config, query, (err, rows) => {
res.send(rows)
});
});
var server = app.listen(3097, function () {
console.log('Server is running..');
});
I want to be able to use the query
const query = "SELECT * from tableName WHERE ID LIKE <inputFromAngular>"
But I am not sure how to get the parameter from angular into the sqlserver.js. (If I can do this then it will lead to updating the SQL Table using SET
In my angular app this is how I am calling the sqlserver.js to display the SQL table:
import { HttpClient } from '#angular/common/http';
constructor(
private httpService: HttpClient
) { }
this.httpService.get("http://servername:3097").subscribe(response => {
console.log(response)
this.sqlData = response;
})
I have tried using this.httpService.post() but I wasn't sure how to get the parameters in the API?

You will need to change you get method to send params from ui side and get params on backend side so add a server side method like
app.get('/:id', function (req, res) {
var sql = require("msnodesqlv8");
var id = req.params.id,
// config for your database
var config = "server=servername;Database=dataBaseName;Trusted_Connection=Yes;Driver={SQL Server Native Client 11.0}"
const query = "SELECT * FROM tableName WHERE ID LIKE "+id;
// connect to your database
sql.query(config, query, (err, rows) => {
res.send(rows)
});
});
then on angular side
this.httpService.get("http://servername:3097/"+yourid).subscribe(response => {
console.log(response)
this.sqlData = response;
})
Also I would suggest you to create a root like /yourapiname/:id instead of /:id and url on angular side should be "http://servername:3097/yourapiname"+yourid because your current root can result to confliction.

I can't establish a connection between MongoDB and my website on NodeJS via Mongoose

I am trying to connect my local database, which is MongoDB with my website using Mongoose, but I am receiving Error 404. What I have to do in this situation?
--the next file is controller for my model
var mongoose = require('mongoose');
var db = 'mongodb://localhost/employeers';
var Emp = require('../models/employeers');
mongoose.connect(db);
module.exports.allEmployeers=function(req,res){
console.log('getting information about everyone employeer');
Emp.find({})
.exec(function(err,employeers){
if(err){
res.send("Error has occured");
}
else{
console.log(employeers);
res.json(employeers);
}
})
};
--my route file
var ctrlEmployeers = require('../controllers/employeers');
router.get('/employeers', ctrlEmployeers.allEmployeers);
I expect when I enter localhost:3000/employeers in the browser, every employeer of my local database to be exported in JSON format. Instead of that I receive a 404 error: Page is not found.

Try this
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/employeers', { useNewUrlParser: true });
var Emp = require('../models/employeers');
module.exports.allEmployeers=function(req,res){
console.log('getting information about everyone employeer');
Emp.find({})
.exec(function(err,employeers){
if(err){
res.send("Error has occured");
}
else{
console.log(employeers);
res.json(employeers);
}
})
};

Issue connecting to my sql database using a REST api server with Node.js

I'm very new to coding servers and javascript in general but I'm currently trying to set up a REST api server and connect it to my sql database, for the moment I am doing everything locally. I am running ubuntu 18.04 while using NODE js. I have been able to successfully create a REST api and connect to it through an url of a webpage or with Postman. I have created a sql server database through my cmd terminal and have created test data on it. I've been looking at guides to connect the REST api to the database but I think the info I'm giving the api to connect is where my issue is occurring. I am starting with this below as my server.js where i have a folder Controller and a ProductController.js file where I'm handling the route /api/products .
var http = require('http');
var express = require('express');
var app = express();
var port = process.env.port || 3000;
var productController = require('./Controller/ProductController')();
app.use("/api/products", productController);
app.listen(port, function(){
var datetime = new Date();
var message = "Server running on Port:- " + port + " Started at :- " +
datetime;
console.log(message);
});
Below is my ProductController.js file. The issue might be here but I believe it is my next file called connect.js the table in my sql database is called 'data' hence the "SELECT * FROM data" part. when I try to GET this data in postman it displays the error i set up "Error while inserting data". so I believe when running I'm not getting data from sql so conn.close() is not being reached.
var express = require('express');
var router = express.Router();
var sql = require("mssql");
var conn = require("../connection/connect")();
var routes = function()
{
router.route('/')
.get(function(req, res)
{
conn.connect().then(function()
{
var sqlQuery = "SELECT * FROM data";
var req = new sql.Request(conn);
req.query(sqlQuery).then(function (recordset)
{
res.json(recordset.recordset);
conn.close();
})
.catch(function (err) {
conn.close();
res.status(400).send("Error while inserting data");
});
})
.catch(function (err) {
conn.close();
res.status(400).send("Error while inserting data");
});
});
return router;
};
module.exports = routes;
This is my connect.js file below. I have a password for root which is not *** but is correct on my machine. I have changed root's plug in to mysql_native_password in the mysql terminal. I think the server: part is wrong, I've tried commenting it out but still no connection. I do not have SQL Server Management Studio and have not found a way to get my sql server's name through the terminal. I've seen examples that seem to range of what info you need to give the api to connect. If someone has insight on that too that would be appreciated as well. My end goal is to eventually create GET and POST routes for the database and a function to manipulate the POST data but for now I'm just trying to get things connected so I can play around with the data being GET'ed. Thanks for any insight you can give, it is much appreciated.
var sql = require("mssql");
var connect = function()
{
var conn = new sql.ConnectionPool({
host: 'localhost'
user: 'root',
password: '********',
server: 'mysql',
database: 'test'
});
return conn;
};

Looks like you may have some errors in your connect.js file:
var conn = new sql.ConnectionPool({
host: 'localhost'
user: 'root',
password: '********',
server: 'mysql',
database: 'test'
});
should be in the format of:
const pool = new sql.ConnectionPool({
user: '...',
password: '...',
server: 'localhost',
database: '...'
})
Note that you currently have both host and server, looks like only server is needed. Also, server: 'mysql' doesn't make sense if you are connecting to a MSSQL database.
Source: node-mssql documentation

To diagnose the errors you should add some logging to your catch blocks:
.catch(function (err) {
console.log('connection error', err); //or Bunyan, Winston, Morgan, etc. logging library
conn.close();
let message = "Error while inserting data"
if (process.env.NODE_ENV === 'development') { //conditionally add error to result message
message += "\n"+err.toString());
}
res.status(500).send(message); //use 5xx for server problems, 4xx for things a user could potentially fix
});
And set NODE_ENV in your environment, for example in package.json:
"scripts": {
"start": "NODE_ENV=production node app.js"
"start-dev": "NODE_ENV=development node app.js"
}

Moongose, expressjs and node-webkit

I'm building an app using node-webkit, based on expressjs and mongoose. I'm new to basically all of this.
I've got a mongoDb hosted online and i'm try to use it in my app, but i'm missing something
I created in model folder db.js, where i connect with the db
var mongoose = require('mongoose');
mongoose.connect('mongodb://user:password#ds012345.mlab.com:port/mydb') //this isn't the real link
then my model, clients.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var clientSchema = new Schema ({
name: String,
//other fields
});
var client = mongoose.model('client', clientSchema);
module.exports = client;
Then, in my app.js
var db = require('./model/db')
I'm also using routes, so in my index.js i got
var client = require('../model/clients')
But i cannot use any function (save, find, ecc.), i can just create models.
I think I'm not connecting in the right way all the modules, i was previously using diskdb and i connected to it in my index.js, but i tried in the same way and it doesn't work anyway.
Also, when i build the app, my mongoose connection status is 2.

Here are a few things:
what is ecc? you should connect to something like this: mongoose.connect('mongodb://localhost:27017/test');
27017 is the default port for MongoDB and test is the name of your database. Also make sure you start mongo server with mongod then run mongo console mongo.
Your field should specify type of the data:
var clientSchema = new Schema ({
name: String,
age: Number
});
So you want to save the document into database:
var client = mongoose.model('client', clientSchema);
var data = {
nome: 'something'
};
var user = new client(data);
user.save(function(err) {
if(err) console.log(err);
});
In your route, you can do something like this to query back and send data back to the req:
var express = require('express');
var router = express.Router();
var clientSchema = require('../models/clientSchema');
router.get('/', function(req, res, next) {
UserSchema.find({} , function(err, data) {
if (err) console.log(err);
res.render('index', {
data: data
});
});
});
module.exports = router;
Hope this help!

How do I use node-mongodb-native to connect to Modulus.io?

First question here, so be kind ;)
I am configuring a Node.js server to connect to a MongoDB database in Modulus.io node.js hosting (really good stuff, worth checking it out), but I can't seem to properly stablish connection. Per the getting-started guide I get a connection uri in the format:
mongodb://user:pass#mongo.onmodulus.net:27017/3xam913
But that doesn't seem to work with the structure of the code I was trying to port to the server (had it running locally) because of the Server class argument structure with only host and port to define...
This is the code I am trying to adapt to the connection:
// server setup
var mongo = require('mongodb'),
mdbServer = mongo.Server,
mdbDb = mongo.Db,
mdbObjectID = mongo.ObjectID;
// open a connection to the mongoDB server
var mdbserver = new mdbServer('localhost', 27017, {auto_reconnect: true});
// request or create a database called "spots03"
var db = new mdbDb('spots03', mdbserver, {safe: true});
// global var that will hold the spots collection
var spotsCol = null;
// open the database
db.open(function(err, db) {
if(!err) {
// if all cool
console.log("Database connection successful");
// open (get/create) a collection named spotsCollection, and if 200,
// point it to the global spotsCol
db.createCollection(
'spotsCollection',
{safe: false}, // if col exists, get the existing one
function(err, collection) {spotsCol = collection;}
);
}
});
Any help would be much appreciated, thanks!

Looks like a couple of things:
The connection URL should be mongo.onmodulus.net
var mdbserver = new mdbServer('mongo.onmodulus.net', 27017, {auto_reconnect: true});
rounce is correct, the database name is auto-generated by Modulus.
var db = new mdbDb('3xam913', mdbserver, {safe: true});
Modulus databases will need authentication. Before you call createCollection, you'll have to call auth and pass it the user credentials that are setup on the project dashboard.
I'm a Modulus developer, and I know the DB name thing is not ideal.
Edit: here's full source for a working example. It records every HTTP request and then sends all requests back to the user.
var express = require('express'),
mongo = require('mongodb'),
Server = mongo.Server,
Db = mongo.Db;
var app = express();
var server = new Server('mongo.onmodulus.net', 27017, { auto_reconnect: true });
var client = new Db('piri3niR', server, { w: 0 });
client.open(function(err, result) {
client.authenticate('MyUser', 'MyPass', function(err, result) {
if(!err) {
console.log('Mongo Authenticated. Starting Server on port ' + (process.env.PORT || 8080));
app.listen(process.env.PORT || 8080);
}
else {
console.log(err);
}
});
});
app.get('/*', function(req, res) {
client.collection('hits', function(err, collection) {
collection.save({ hit: req.url });
// Wait a second then print all hits.
setTimeout(function() {
collection.find(function(err, cursor) {
cursor.toArray(function(err, results) {
res.send(results);
});
});
}, 1000)
});
});

Wrong database name perhaps?
From the MongoDB docs on the subject '3xam913' is your database name, not 'spots03'.
var db = new mdbDb('3xam913', mdbserver, {safe: true});