new /data/allposts and /weather examples of creating and consuming js…

…on data

models.js

@@ -21,9 +21,6 @@ module.exports.configureSchema = function(Schema, mongoose) {
       }
     });
 
-
-
-
     // add schemas to Mongoose
     mongoose.model('BlogPost', BlogPost);
     mongoose.model('Comment', Comments);

package.json

@@ -4,6 +4,7 @@
   "dependencies": {
     "express": "2.5.6",
     "ejs" : "latest",
-    "mongoose" : "2.5.6"
+    "mongoose" : "2.5.6",
+    "request" : "2.9.153"
   }
 }

views/weather_from_yahoo.html

@@ -0,0 +1,49 @@
+<div class="row">
+
+    <!-- LEFT COLUMN -->
+    <div class="span6">
+        <h1><%= weather.location.city %>
+            <img src="<%= weather.condition.image %>" alt="weather condition graphic : <%= weather.condition.text %>">
+        </h1>
+
+        <hr>
+
+        <ul>
+            <li>Temperature: 
+            <%= weather.condition.text %>
+            <%= weather.condition.temperature %> <%= weather.units.temperature %></li>
+            <li>Wind speed: <%= weather.wind.speed %><%= weather.units.speed %> <%= weather.wind.direction %></li>
+            <li>Visibility: <%= weather.atmosphere.visibility %><%= weather.units.distance %>
+        </ul>
+
+        <hr>
+
+        <ul>
+            <li>Sunrise: <%= weather.astronomy.sunrise %></li>
+            <li>Sunset: <%= weather.astronomy.sunset %></li>
+        </ul>
+
+        <!-- location listing -->
+        <br><br>
+        <div class="well">
+            <h3>See weather in:</h3>
+            <% for(place in YAHOOLocations) { %>
+                <a href="/weather/<%= place %>"><%= place.toUpperCase() %></a> &nbsp;
+            <% } %>
+        </div>
+
+
+
+    </div>
+
+    <!-- RIGHT COLUMN -->
+    <div class="span6">
+        <h3>For example only, this is the JSON data from Yahoo</h3>
+        <pre><%= jsonFromYahoo %></pre>
+        <br>
+        requested url:<br>
+        <a href="<%= requestedURL %>" target="_new"><%= requestedURL %></a><br>
+
+    </div>
+</div>
+

web.js

@@ -6,6 +6,8 @@ var app = express.createServer(express.logger());
 var mongoose = require('mongoose'); // include Mongoose MongoDB library
 var schema = mongoose.Schema; 
 
+var requestURL = require('request');
+
 /************ DATABASE CONFIGURATION **********/
 app.db = mongoose.connect(process.env.MONGOLAB_URI); //connect to the mongolabs database - local server uses .env file
 
@@ -193,7 +195,7 @@ app.get('/new-entry',function(request, response){
 // receive a form submission
 app.post('/new-entry', function(request, response){
 
-    console.log('Received new blog post submission')
+    console.log('Received new blog post submission');
     console.log(request.body);
 
     // Prepare the blog post entry form into a data object
@@ -332,6 +334,7 @@ app.post("/update", function(request, response){
     // include data to update with 'updatedData'
     // extra options - this time we only want a single doc to update
     // after updating run the callback function - return err and numAffected
+
     BlogPost.update( condition, updatedData, options, function(err, numAffected){
 
         if (err) {
@@ -352,6 +355,92 @@ app.post("/update", function(request, response){
 });
 
 
+/*********** API & JSON EXAMPLES ************/
+
+// return all blog entries in json format
+app.get('/data/allposts', function(request, response){
+
+    // define the fields you want to include in your json data
+    includeFields = ['title','content','urlslug','date','comments','author.name']
+
+    // query for all blog
+    queryConditions = {}; //empty conditions - return everything
+    var query = BlogPost.find( queryConditions, includeFields);
+
+    query.sort('date',-1); //sort by most recent
+    query.exec(function (err, blogPosts) {
+
+        // render the card_form template with the data above
+        jsonData = {
+          'status' : 'OK',
+          'posts' : blogPosts
+        }
+
+        response.json(jsonData);
+    });
+});
+
+app.get('/weather', function(request, response){
+
+    // default /weather request - redirect to /weather/NYC
+    response.redirect("/weather/nyc");
+
+});
+
+app.get('/weather/:location', function(request, response){
+
+    // Yahoo Where On Earth ID ( WOEID )
+    // look up more locations here http://woeid.rosselliot.co.nz/lookup/shanghai
+    YAHOOLocations = {
+        'nyc' : 2459115,
+        'berlin' : 638242,
+        'shanghai' : 2151849
+    }
+
+    requestedLocation = request.params.location.toLowerCase();
+
+    if (requestedLocation in YAHOOLocations ) {
+        woeid = YAHOOLocations[requestedLocation];
+    } else {
+        woeid = YAHOOLocations['nyc'] // default to nyc
+    }
+
+    // build the request URL
+    yahooWeatherURL = "http://weather.yahooapis.com/forecastjson?w=" + woeid;
+
+    // make the request
+    requestURL(yahooWeatherURL, function(err, httpResponse, data) {
+
+        if (err || httpResponse.statusCode != 200) {
+            console.log(err);
+            response.send("Something went wrong");
+        }
+
+        if (httpResponse.statusCode == 200) {
+
+            //convert JSON string into JS Object
+            weatherData = JSON.parse(data);
+
+            console.log("-------- DATA RECEIVED -------");
+            console.log(data);
+            console.log("------------------------------");
+
+            templateData = {
+                jsonFromYahoo : data,
+                weather : weatherData,
+                requestedURL : yahooWeatherURL, 
+                YAHOOLocations : YAHOOLocations
+            }
+
+            response.render('weather_from_yahoo.html', templateData);
+        }
+
+
+    })
+
+})
+
+
 // Make server turn on and listen at defined PORT (or port 3000 if is not defined)
 var port = process.env.PORT || 3000;
 app.listen(port, function() {