django cms plugin instance related_set returns empty list - plugins

Question

I have the following models
class NewSlide(models.Model):
slider = models.ForeignKey('NewSliderPlugin')
title = models.CharField(max_length=255)
content = models.TextField(max_length=80, null=True)
link = models.CharField(max_length=255)
image = models.ImageField(upload_to='slides', null=True)
visible = models.BooleanField(default=False)
def __unicode__(self): # Python 3: def __str__(self):
return self.title
class NewSliderPlugin(CMSPlugin):
title = models.CharField(max_length=255)
template = models.CharField(max_length=255, choices=(('slider.html','Top Level Slider'), ('slider2.html','Featured Slider')))
The plugin code as below:
class NewSlideInline(admin.StackedInline):
model = NewSlide
extra = 1
class NewCMSSliderPlugin(CMSPluginBase):
model = NewSliderPlugin
name = "NewSlider"
render_template = "slider.html"
inlines = [NewSlideInline]
def render(self, context, instance, placeholder):
self.render_template = instance.template
print instance.title
print instance.newslide_set.all(), 1111111111111111
context.update({
'slider': instance,
'object': instance,
'placeholder': placeholder
})
return context
I have added slides to the plugin and published changes, however 1instance.newslide_set.all()1 returns empty list: [] 1111111111111111
Update:
it creates 2 records, somehow the admin references 49, but render code gives 63
mysql> select * from cmsplugin_newsliderplugin;
+------------------+-----------+-------------+
| cmsplugin_ptr_id | title | template |
+------------------+-----------+-------------+
| 49 | slide | slider.html |
| 63 | slide | slider.html |
+------------------+-----------+-------------+
mysql> select * from slider_newslide;
+----+-----------+-------+---------+------+----------------+---------+
| id | slider_id | title | content | link | image | visible |
+----+-----------+-------+---------+------+----------------+---------+
| 6 | 49 | ttttt | testt | test | slides/287.jpg | 0 |
+----+-----------+-------+---------+------+----------------+---------+
By the way, I have django-reversion installed, not sure if it's because of this app.

Answer 1

OK according to the documentation I need to copy the related items:
class NewSliderPlugin(CMSPlugin):
title = models.CharField(max_length=255)
template = models.CharField(max_length=255, choices=(('slider.html','Top Level Slider'), ('slider2.html','Featured Slider')))
def copy_relations(self, oldinstance):
for slide in oldinstance.newslide_set.all():
# instance.pk = None; instance.pk.save() is the slightly odd but
# standard Django way of copying a saved model instance
slide.pk = None
slide.slider = self
slide.save()