Add route, controller action & db query to get countries together with number of registered users

Author: matboehm

core/db.js

@@ -128,6 +128,20 @@ exports.getCount = function(callback){
     });
 };
 
+exports.getCountries = function(callback){
+    pool.getConnection(function(err, connection) {
+        if(err) { console.log(err); callback(true); return; }
+
+        let sql  = "SELECT country, COUNT(id) AS number FROM entries WHERE country != '' GROUP BY country ORDER BY number DESC;";
+
+        connection.query(sql, function(err, results) {
+            connection.release();
+            if(err) { callback(results, true); return; }
+            callback(results, false);
+        });
+    });
+};
+
 exports.saveEntry = function(fields, callback){
     pool.getConnection(function(err, connection) {
         if(err) { console.log(err); callback(true); return; }

core/entryController.js

@@ -90,6 +90,19 @@ exports.getCount = function(req, res) {
     });
 };
 
+exports.getCountries = function(req, res) {
+    db.getCountries(function(results, err){
+        if(!err){
+            res.status(200).json({
+                success : true,
+                countries : results
+            });
+        }else{
+            res.status(400).json({success : false, message : "error"});
+        }
+    });
+};
+
 exports.verifyEntry = function(req, res) {
     db.verifyEntry(req.params.k, function(results, err){
         if(!err){

core/restapi.js

@@ -26,4 +26,5 @@ module.exports = function(app) {
     app.route('/entries').post(entryController.createEntry);
     app.route('/entries/toggle').post(entryController.toggleStatus);
     app.route('/entries').get(entryController.getAll);
+    app.route('/countries').get(entryController.getCountries);
 };