Bugfix: Chart specific options require to be copied on publish

djangocms_charts/models.py

@@ -48,6 +48,18 @@ class ChartModel(CMSPlugin, DatasetBase):
     chart_options_group = models.ForeignKey(ChartOptionsGroupModel, on_delete=models.CASCADE,
                                             related_name="chart_options", blank=True, null=True)
 
+    def copy_relations(self, old_instance):
+        # Before copying related objects from the old instance, the ones
+        # on the current one need to be deleted. Otherwise, duplicates may
+        # appear on the public version of the page
+        self.options.all().delete()
+
+        for option in old_instance.options.all():
+            # standard Django way of copying a saved model instance
+            option.pk = None
+            option.options_group = self
+            option.save()
+
     def get_chart_width(self):
         if self.chart_width.isnumeric():
             return f'{self.chart_width}px'

setup.py

@@ -9,7 +9,7 @@
 
 setup(
     name='djangocms_charts',
-    version='3.0.3',
+    version='3.0.4',
     packages=find_packages(),
     include_package_data=True,
     license='MIT License',