Merge pull request #854 from zacronos/custom_data_watcher

csv-export plugin: custom data watcher

plugins/README.md

@@ -34,8 +34,10 @@ Add CSV Export to your ng-grid tables by including it in your plugins array:
 Options
 -------
 
-        opts =
-             { columnOverrides: < hash of column override functions > }
+        opts = {
+            columnOverrides: < hash of column override functions >
+            customDataWatcher: < function whose return value can be $watched to detect changed data >
+        }
 
 For arrays and objects you may want to override the default `JSON.stringify`
 conversion into strings.

plugins/ng-grid-csv-export.js

@@ -71,6 +71,10 @@ function ngGridCsvExportPlugin (opts) {
             }
             return hash;
         };
-        scope.$watch('catHashKeys()', showDs);
+        if (opts.customDataWatcher) {
+            scope.$watch(opts.customDataWatcher, showDs);
+        } else {
+            scope.$watch(scope.catHashKeys, showDs);
+        }
     };
 }