node.js - retrieving json properties from databse using express -


i new express. have created api crud app in express access cloudant db.

now want parse properties json files have on db , put them properties.

i have tried " request ( url, function(error, response, data) { body = data; } didn't work. body undefined.

var express = require('express');  var http = require('http');  var app = express();  var bodyparser = require('body-parser');  var request = require("request");  var body;    var cloudant = require('cloudant');    app.set('port', process.env.port || 3000);  app.set('json spaces', 2);  app.use(bodyparser.json());  app.use(bodyparser.urlencoded({  	extended: true  }));     //==== configure database ======================================//  var services = json.parse(process.env.vcap_services || "{}");  var cloudantcreds = {};  (var servicename in services) {  	if (servicename.indexof("cloudantnosqldb") > -1) {  		cloudantcreds = services[servicename][0]['credentials'];  	}  }    var services = {cloudant:{}};  if (json.stringify(cloudantcreds) == "{}") {  	services = require("./services.json");  }    var dbconfig = {  	account : cloudantcreds.username || services.cloudant.username || "",   	password : cloudantcreds.password || services.cloudant.password || "",  	dbname : services.cloudant.dbname || "device_info"  };    var cloudant = cloudant(dbconfig);  var db = cloudant.db.use(dbconfig.dbname);  app.set('cloudant', cloudant);  app.set('db', db);  var db = require('./lib/cloudant/db.js');  //==============================================================//    //==== create student database =================================//  // curl <url>/cloudant/createdb                                 //  //==============================================================//  app.all(db.paths.createdb, db.createdb);    //==== create / insert document ================================//  // curl <url>/cloudant/set                                      //  //==============================================================//  app.all(db.paths.create, db.create);    //==== list documents in database ==========================//  // curl <url>/cloudant/list                                     //  //==============================================================//  app.all(db.paths.list, db.list);    //==== read 1 document based on id =============================//  // curl <url>/cloudant/get?id=3                                 //  //==============================================================//  app.all(db.paths.read, db.read);    //==== update 1 document based on id ===========================//  // curl <url>/cloudant/update?id=3&firstname=bob&lastname=peter //  //==============================================================//  app.all(db.paths.update, db.update);    //==== delete 1 document based on id ===========================//  // curl <url>/cloudant/delete?id=3                              //  //==============================================================//  app.all(db.paths.delete_, db.delete_);    //==== delete / drop student database===========================//  // curl <url>/cloudant/deletedb                                 //  //==============================================================//  app.all(db.paths.deletedb, db.deletedb);    request("http://localhost:3000/cloudant/get?_id=215729fc5e5785b", function(error, response, data) {      body = data;  });    http.createserver(app).listen(app.get('port'), function(){  	console.log('express server listening on port ' + app.get('port'));      console.log(body);  });


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