Added support to sort by order and columns

Author: archr

example/index.js

@@ -9,7 +9,10 @@ var app = express();
 
 app.use(express.static(__dirname + '/bower_components'));
 app.use(express.static(__dirname + '/public'));
-app.use(bodyParser.urlencoded({ extended: false }));
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({
+  extended: true
+}));
 
 
 mongoose.connect('mongodb://localhost/mongoose-datatables-example', function (err) {
@@ -31,7 +34,9 @@ mongoose.connect('mongodb://localhost/mongoose-datatables-example', function (er
 app.post('/', function (req, res) {
   User.dataTables({
     limit: req.body.length,
-    skip: req.body.start
+    skip: req.body.start,
+    order: req.body.order,
+    columns: req.body.columns
   }).then(function (table) {
     res.json({
       data: table.data,

lib/mongoose-datatables.js

@@ -21,6 +21,8 @@ function dataTablesPlugin (schema, options) {
     var find = params.find || {}
     var sort = params.sort || {}
     var search = params.search || {}
+    var order = params.order || [];
+    var columns = params.columns || [];
     var formatter = params.formatter
 
     if (search && search.value && search.fields && search.fields.length) {
@@ -43,6 +45,18 @@ function dataTablesPlugin (schema, options) {
       }
     }
 
+    if (order && columns) {
+      const sortByOrder = order.reduce((memo, ordr) => {
+        const column = columns[ordr.column];
+        memo[column.data] = ordr.dir === 'asc' ? 1 :  -1;
+        return memo;
+      }, {});
+
+      if (Object.keys(sortByOrder).length) {
+        sort = sortByOrder;
+      }
+    }
+
     var query = thisSchema
       .find(find)
       .select(select)

test/index.js

@@ -83,6 +83,27 @@ describe('mongoose-datatables', function () {
     }).catch(done)
   })
 
+  it('sort using order and columns params', function (done) {
+    User.dataTables({
+      skip: 0,
+      limit: 10,
+      columns: [
+        { data: 'first_name' },
+        { data: 'last_name' },
+        { data: 'username' },
+      ],
+      order: [
+        {
+          column: 0,
+          dir: 'asc'
+        }
+      ]
+    }).then(table => {
+      expect(table.data[0].first_name).equal('Antonio')
+      done()
+    }).catch(done)
+  });
+
   it('search', function (done) {
     User.dataTables({
       skip: 0,