id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
10713	Problem extending a model with ManyToMany field	jjgod	nobody	"Currently, syncdb command will only create ManyToMany tables for a field if the model that field belongs to are newly created. For example, if I first have:

{{{
#!python
class A(models.Model):
      foo = ...
}}}

Then I run `python manage.py syncdb`, it will create a table for `A` model.

Then I add a new field to this model, say:

{{{
#!python
class B(models.Model):
    ...

class A(models.Model):
      foo = ...
      bar = models.ManyToManyField(B)
}}}

Then I run `python manage.py syncdb` again, it won't create the needed ManyToMany table for me, the only way to have this table created is to drop the previously created table for `A` first, then let syncdb to create them for me again. I think it is inconvenient and need to be fixed."		closed	Core (Other)	dev		duplicate	manytomany		Unreviewed	0	0	0	0	0	0