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JavaScript Build a Simple Dynamic Site with Node.js HTTP Methods and Headers Redirection Headers in Node.js

Can't access user profile, (error "Moved Permanently")

Using the code as instructed in the course and I am getting an error message "Moved Permanently". Is anyone else getting this error ?

following code

//Router page 
var Profile = require("./profile.js");
var renderer = require("./renderer.js");
var querystring = require("querystring"); 

var contentType = {'Content-Type': 'text/html'}; 

//Handle HTTP route GET / and POST / i.e. Home
function home(request, response) {
  //if url == "/" && GET
  if(request.url === "/") {
    if(request.method.toLowerCase() === "get"){
    //show search
    response.writeHead(200, contentType);  
    renderer.view("header", {}, response);
    renderer.view("search", {}, response);
    renderer.view("footer", {}, response);
    response.end();
    }else{
      //if url == "/" && POST
        //get the post data from body 
        request.on("data", function(postBody){
          //extract the username 
          var query = querystring.parse(postBody.toString()); 
           //redirect to /:username
          response.writeHead(303, {"location": "/" + query.username}); 
          response.end(); 
        }); 


    }
  }

}

//Handle HTTP route GET /:username i.e. /chalkers
function user(request, response) {
  //if url == "/...."
  var username = request.url.replace("/", "");
  if(username.length > 0) {
    response.writeHead(200, contentType);  
    renderer.view("header", {}, response);    

    //get json from Treehouse
    var studentProfile = new Profile(username);
    //on "end"
    studentProfile.on("end", function(profileJSON){
      //show profile

      //Store the values which we need
      var values = {
        avatarUrl: profileJSON.gravatar_url, 
        username: profileJSON.profile_name,
        badges: profileJSON.badges.length,
        javascriptPoints: profileJSON.points.JavaScript
      }
      //Simple response
      renderer.view("profile", values, response);
      renderer.view("footer", {}, response);
      response.end();
    });

    //on "error"
    studentProfile.on("error", function(error){
      //show error
      renderer.view("error", {errorMessage: error.message}, response);
      renderer.view("search", {}, response);
      renderer.view("footer", {}, response);
      response.end();
    });

  }
}

module.exports.home = home;
module.exports.user = user;

Any ideas on what might be causing the issue?

6 Answers

Thank you so much, it works now.

Milo Winningham
seal-mask
.a{fill-rule:evenodd;}techdegree
Milo Winningham
Web Development Techdegree Student 3,317 Points

We recently upgraded the Treehouse website so every page is served securely over HTTPS, but this code doesn't follow the redirect when loading a student profile like browsers normally do. Try opening up profile.js and changing require('http') to require('https'), and http://teamtreehouse.com to https://teamtreehouse.com.

Made the changes but now I get an error message "throw er; // Unhandled 'error' event"

var EventEmitter = require("events").EventEmitter;
var http = require("https");
var util = require("util");

/**
 * An EventEmitter to get a Treehouse students profile.
 * @param username
 * @constructor
 */
function Profile(username) {

    EventEmitter.call(this);

    profileEmitter = this;

    //Connect to the API URL (https://teamtreehouse.com/username.json)
    var request = http.get("https://teamtreehouse.com" + username + ".json", function(response) {
        var body = "";

        if (response.statusCode !== 200) {
            request.abort();
            //Status Code Error
            profileEmitter.emit("error", new Error("There was an error getting the profile for " + username + ". (" + http.STATUS_CODES[response.statusCode] + ")"));
        }

        //Read the data
        response.on('data', function (chunk) {
            body += chunk;
            profileEmitter.emit("data", chunk);
        });

        response.on('end', function () {
            if(response.statusCode === 200) {
                try {
                    //Parse the data
                    var profile = JSON.parse(body);
                    profileEmitter.emit("end", profile);
                } catch (error) {
                    profileEmitter.emit("error", error);
                }
            }
        }).on("error", function(error){
            profileEmitter.emit("error", error);
        });
    });
}

util.inherits( Profile, EventEmitter );

module.exports = Profile;

Could there be another issue causing the error ?

Well that explains why my jquery request broke. I'll have to check this when I get home to see if I can fix it.

Wilson Usman
Wilson Usman
35,206 Points

What's weird is that it will work if I directly write /chalkers, but once I refresh I get an error:

``` profileEmitter.emit("error", new Error("There was an error getting the profile for " + username + ". (" + http.STATUS_CODES[response.statusCode] + ")"));

Any advice?
Tom Geraghty
Tom Geraghty
24,174 Points

Following what Milo said above, you have to make changes to the profile.js file so it calls https instead of http. You can read his instructions and work it out, or, for the lazy:

var EventEmitter = require("events").EventEmitter;
var https = require("https");
var util = require("util");

/**
 * An EventEmitter to get a Treehouse students profile.
 * @param username
 * @constructor
 */
function Profile(username) {

    EventEmitter.call(this);

    profileEmitter = this;

    //Connect to the API URL (https://teamtreehouse.com/username.json)
    var request = https.get("https://teamtreehouse.com/" + username + ".json", function(response) {
        var body = "";

        if (response.statusCode !== 200) {
            request.abort();
            //Status Code Error
            profileEmitter.emit("error", new Error("There was an error getting the profile for " + username + " (" + response.statusCode + ")."));
        }

        //Read the data
        response.on('data', function (chunk) {
            body += chunk;
            profileEmitter.emit("data", chunk);
        });

        response.on('end', function () {
            if(response.statusCode === 200) {
                try {
                    //Parse the data
                    var profile = JSON.parse(body);
                    profileEmitter.emit("end", profile);
                } catch (error) {
                    profileEmitter.emit("error", error);
                }
            }
        }).on("error", function(error){
            profileEmitter.emit("error", error);
        });
    });
}

util.inherits( Profile, EventEmitter );

module.exports = Profile;

If you replace profile.js with the above code the app works!

Curtis Slone
PLUS
Curtis Slone
Courses Plus Student 13,318 Points

I did this awhile ago, the app works in node but doesn't load the web page itself.

Curtis Slone
PLUS
Curtis Slone
Courses Plus Student 13,318 Points

I did this awhile ago, the app works in node but doesn't load the web page itself.