Hi all. I have a set of classes (web page items like radios,
checkboxes, etc.) They are built on a superclass - Item. I need a
join table to link them to specific pages in which I also store a
position (PageItem) . Here is a snippet:
#
----------------------------------------------------------------------------------
# will use this for subclassing into our item subtypes
#
----------------------------------------------------------------------------------
class Item(models.Model):
name = models.CharField(max_length=30)
def __unicode__(self):
return self.name
class Meta:
abstract = True
#
----------------------------------------------------------------------------------
class Page(models.Model):
website = models.ForeignKey(Website)
position = models.IntegerField()
file_name = models.CharField(max_length=50)
h1_title = models.CharField(max_length=50)
def __unicode__(self):
return self.file_name
class Meta:
ordering = ["file_name"]
#
----------------------------------------------------------------------------------
class PageItem(models.Model):
page = models.ForeignKey(Page, editable=False)
item = models.ForeignKey(Item) # WANT THIS TO POINT TO SPECIFIC
SUBCLASS ITEM
position = models.IntegerField()
def name(self):
return str(self.item.name)
class Meta:
ordering = ['position']
#
----------------------------------------------------------------------------------
class RadioBoxType(Item):
"""A Radio Button object with its specific attributes"""
......... etc.
My problem is that I want the item/page relationship in the join table
PageItem, so I can track the position. I realize that I can't have a
fk to an abstract class though and obviously want it to point to the
subclassed object. Is there a better way to go about this or a work
around anyone can point me at. Seems straight forward from an object
perspective, maybe not for the ORM?
My join table was working fine until I changed to the abstract
supercalss (to solve another problem :-), and there are quite a few
different item types.
Any thoughts most appreciated. I am using django 1.0
Thanks for listening,
Peter
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