Fixed #25004 -- Updated OpenLayers-based widget to OpenLayers 3

Thanks Tim Graham for the review.

1 files changed, 11 insertions, 8 deletions

diff --git a/django/contrib/gis/forms/widgets.py b/django/contrib/gis/forms/widgets.py
index 37e58d9b74..e331e1844d 100644
--- a/django/contrib/gis/forms/widgets.py
+++ b/django/contrib/gis/forms/widgets.py
@@ -80,13 +80,22 @@ class OpenLayersWidget(BaseGeometryWidget):
     template_name = 'gis/openlayers.html'
 
     class Media:
+        css = {
+            'all': (
+                'https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.css',
+                'gis/css/ol3.css',
+            )
+        }
         js = (
-            'https://cdnjs.cloudflare.com/ajax/libs/openlayers/2.13.1/OpenLayers.js',
+            'https://cdnjs.cloudflare.com/ajax/libs/ol3/3.20.1/ol.js',
             'gis/js/OLMapWidget.js',
         )
 
+    def serialize(self, value):
+        return value.json if value else ''
+
 
-class OSMWidget(BaseGeometryWidget):
+class OSMWidget(OpenLayersWidget):
     """
     An OpenLayers/OpenStreetMap-based widget.
     """
@@ -95,12 +104,6 @@ class OSMWidget(BaseGeometryWidget):
     default_lat = 47
     map_srid = 3857
 
-    class Media:
-        js = (
-            'https://cdnjs.cloudflare.com/ajax/libs/openlayers/2.13.1/OpenLayers.js',
-            'gis/js/OLMapWidget.js',
-        )
-
     def __init__(self, attrs=None):
         super(OSMWidget, self).__init__()
         for key in ('default_lon', 'default_lat'):