Filtering M2M in Admin Interface

Hi All,

I have a scenario setup very much like the Polls example in the tutorial.

class Terminology(models.Model):
name = models.CharField(max_length=110)
abbreviation = models.CharField(max_length=20)
version = models.CharField(max_length=30)

def __unicode__(self):
return self.name + " : " + self.version

class Codes(models.Model):
terminology = models.ForeignKey(Terminology)
code_string = models.CharField(max_length=110)
code = models.CharField(max_length=20)
url = models.URLField(verbose_name="Reference", help_text="An
optional reference to the description for the code.", blank=True)

def __unicode__(self):
return self.code + " : " + self.code_string


Now to extend this a bit.

class DvCodedString(DvString):
terminology = models.ForeignKey(Terminology, null=True, blank=True)
codes = models.ManyToManyField(Codes, null=True, blank=True)
...


My admin models:
class CodesInline(admin.TabularInline):
model = Codes
extra = 5

class TerminologyAdmin(admin.ModelAdmin):
fieldsets = (
(None, {'classes':('wide',),
'fields':('abbreviation','version','name',)}),
)
inlines = [CodesInline]
admin.site.register(Terminology, TerminologyAdmin)


class DvCodedStringAdmin(admin.ModelAdmin):
fieldsets = (
(None, {'classes':('wide',),
'fields':('published','prj_name','data_name',)}),
("Basic", {'classes':('collapse',),
'fields':('terminology','codes',),
'description':'When all codes come from one
terminology (and one version of it).'}),

...

Currently all codes will be shown in the select box.
But of course what I really want is the Terminology Choice to filter
the available codes displayed.

So, my question is:
Where can I find the relevant documentation on doing this in the admin
interface?
Or can it be done in the admin interface?

Thanks,
Tim





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