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JavaScript Build a Simple Dynamic Site with Node.js HTTP Methods and Headers Dealing with the POST Body

Carlos Lantigua
Carlos Lantigua
5,938 Points
Posted by Carlos Lantigua
Carlos Lantigua
5,938 Points

querystring.parse() throws up console error, not sure why : (

when attempting to post the username data from the form field I get a weird error message

//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, commonHeaders);
      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 
        let query = queryString.parse(postBody.toString());
          response.write(query.username);
          response.end();
          //redirect to /:username
      });
    }
  }
}

I get the following

Server running at http://<workspace-url>/                                                                                        
/home/treehouse/workspace/router.js:22 
        let query = queryString.parse(postBody.toString());                                                                      
                                ^                                                                                                

ReferenceError: queryString is not defined                                                                                       
    at IncomingMessage.<anonymous> (/home/treehouse/workspace/router.js:22:33)                                                   
    at emitOne (events.js:96:13)                                                                                                 
    at IncomingMessage.emit (events.js:188:7)                                                                                    
    at IncomingMessage.Readable.read (_stream_readable.js:381:10)                                                                
    at flow (_stream_readable.js:761:34)                                                                                         
    at resume_ (_stream_readable.js:743:3)                                                                                       
    at _combinedTickCallback (internal/process/next_tick.js:80:11)                                                               
    at process._tickCallback (internal/process/next_tick.js:104:9)

1 Answer

Carlos Lantigua
Carlos Lantigua
5,938 Points
Carlos Lantigua
Carlos Lantigua
5,938 Points

figured it out, per the documentation is requires querystring to be defined as a variable, just dropped this at the top..

const querystring = require('querystring');