Hi,
I got a too difficult problem for me :
Here's is my model Poll :
class Poll(meta.Model):
question = meta.CharField(maxlength=200)
pub_date = meta.DateTimeField('date published')
class META:
admin = meta.Admin()
def __repr__(self):
return self.question
def _post_save(self):
from django.models.treemanager import trees
a = trees.Tree(parent_id = 1,lhs = 0, rhs = 0, name =
self.question, description = 'Description', table_name = 'polls_polls',
table_id = self.id)
a.save()
And my model Tree :
class Tree(meta.Model):
parent = meta.ForeignKey("self")
lhs = meta.IntegerField(null=False, default=0)
rhs = meta.IntegerField(null=False, default=0)
name = meta.CharField(maxlength=255, null=False, default='')
description = meta.CharField(maxlength=255, null=False, default='')
table_name = meta.CharField(maxlength=255, null=False, default='')
table_id = meta.IntegerField(null=False, default=0)
class META:
admin = meta.Admin()
def __repr__(self):
return self.name
def _pre_save(self):
if self.id == None :
from django.models.treemanager import trees
from django.core.db import db
print "Je suis ici"
myParent = trees.get_object(pk = self.parent_id)
updateLeftQuery = "UPDATE treemanager_trees SET lhs = lhs +
%s WHERE lhs >= %s" %(2, myParent.rhs)
updateRightQuery = "UPDATE treemanager_trees SET rhs = rhs
+ %s WHERE rhs >= %s" %(2, myParent.rhs)
cursor = db.cursor()
cursor.execute(updateLeftQuery)
cursor.execute(updateRightQuery)
self.lhs = myParent.rhs
self.rhs = myParent.rhs + 1
And when I save a new Poll (from command line interface or web admin
interface), I got this appening :
1 - New Poll is saved
2 - New Poll._post_save() is called
3 - New Poll creates a New Tree
4 - New Tree is saved but New Tree._pre_save() is NEVER called.
Did I missed something ???
Regards,
Laurent.
