added functionality to all 3 servers to write to '_comments.json' within the post request

Author: darthneel

_comments.json

@@ -1,6 +1 @@
-[
-  {
-    "author": "Pete Hunt",
-    "text": "Hey there!"
-  }
-]
+[{"author":"Pete Hunt","text":"Hey there!"}]

server.js

@@ -29,6 +29,7 @@ app.get('/comments.json', function(req, res) {
 
 app.post('/comments.json', function(req, res) {
   comments.push(req.body);
+  fs.writeFile('_comments.json', JSON.stringify(comments))
   res.setHeader('Content-Type', 'application/json');
   res.send(JSON.stringify(comments));
 });

server.py

@@ -16,7 +16,9 @@
 
 PUBLIC_PATH = "public"
 
-comments = json.loads(open('_comments.json').read())
+file = open('_comments.json', 'r+')
+comments = json.loads(file.read())
+file.close()
 
 def sendJSON(res):
     res.send_response(200)
@@ -47,6 +49,12 @@ def do_POST(self):
 
             # Save the data
             comments.append({u"author": form.getfirst("author"), u"text": form.getfirst("text")})
+            print comments
+            # Write to file
+            file = open('_comments.json', 'w+')
+            file.write(json.dumps(comments))
+            file.close()
+
             sendJSON(self)
         else:
             SimpleHTTPRequestHandler.do_POST(self)

server.rb

@@ -22,6 +22,7 @@
   if req.request_method == 'POST'
     # Assume it's well formed
     comments << req.query
+    File.write('./_comments.json', comments.to_json)
   end
 
   # always return json