fixes issue #271

- OrderedDict serialization sometimes failed due to how odict is implemented. Dropped usage of it for a simple tuple

rhodecode/controllers/summary.py

@@ -154,11 +154,9 b' class SummaryController(BaseRepoControll'
                                "desc": LANGUAGES_EXTENSIONS_MAP.get(x)})
                           for x, y in lang_stats_d.items())
 
-            c.trending_languages = json.dumps(OrderedDict(
-                                       sorted(lang_stats, reverse=True,
-                                            key=lambda k: k[1])[:10]
-                                        )
-                                    )
+            c.trending_languages = json.dumps(
+                sorted(lang_stats, reverse=True, key=lambda k: k[1])[:10]
+            )
             last_rev = stats.stat_on_revision + 1
             c.repo_last_rev = c.rhodecode_repo.count()\
                 if c.rhodecode_repo.revisions else 0

rhodecode/lib/compat.py

@@ -87,6 +87,7 b' class _Nil(object):'
 
 _nil = _Nil()
 
+
 class _odict(object):
     """Ordered dict data structure, with O(1) complexity for dict operations
     that modify one element.
@@ -146,7 +147,7 b' class _odict(object):'
         dict_impl = self._dict_impl()
         try:
             dict_impl.__getitem__(self, key)[1] = val
-        except KeyError, e:
+        except KeyError:
             new = [dict_impl.__getattribute__(self, 'lt'), val, _nil]
             dict_impl.__setitem__(self, key, new)
             if dict_impl.__getattribute__(self, 'lt') == _nil:
@@ -158,7 +159,7 b' class _odict(object):'
 
     def __delitem__(self, key):
         dict_impl = self._dict_impl()
-        pred, _ , succ = self._dict_impl().__getitem__(self, key)
+        pred, _, succ = self._dict_impl().__getitem__(self, key)
         if pred == _nil:
             dict_impl.__setattr__(self, 'lh', succ)
         else:
@@ -351,6 +352,7 b' class _odict(object):'
                        dict_impl.__getattribute__(self, 'lt'),
                        dict_impl.__repr__(self))
 
+
 class OrderedDict(_odict, dict):
 
     def _dict_impl(self):

rhodecode/templates/summary/summary.html

@@ -295,33 +295,35 b" YUE.on(['download_options','archive_subr"
 var data = ${c.trending_languages|n};
 var total = 0;
 var no_data = true;
-for (k in data){
-    total += data[k].count;
-    no_data = false;
-}
 var tbl = document.createElement('table');
 tbl.setAttribute('class','trending_language_tbl');
 var cnt = 0;
-for (k in data){
+
+for (var i=0;i<data.length;i++){
+    total += data[i][1].count;    
     cnt += 1;
+    no_data = false;
+    
     var hide = cnt>2;
     var tr = document.createElement('tr');
     if (hide){
         tr.setAttribute('style','display:none');
         tr.setAttribute('class','stats_hidden');
     }
-    var percentage = Math.round((data[k].count/total*100),2);
-    var value = data[k].count;
+    var k = data[i][0];
+    var obj = data[i][1];
+    var percentage = Math.round((obj.count/total*100),2);
+    
     var td1 = document.createElement('td');
     td1.width = 150;
     var trending_language_label = document.createElement('div');
-    trending_language_label.innerHTML = data[k].desc+" ("+k+")";
+    trending_language_label.innerHTML = obj.desc+" ("+k+")";
     td1.appendChild(trending_language_label);
 
     var td2 = document.createElement('td');
     td2.setAttribute('style','padding-right:14px !important');
     var trending_language = document.createElement('div');
-    var nr_files = value+" ${_('files')}";
+    var nr_files = obj.count+" ${_('files')}";
 
     trending_language.title = k+" "+nr_files;