Hello Moogly,
$ wine/models.py:
class ColorBase(models.Model):
class Meta:
abstract = true
COLORS_CHOICHES = (
("Red", "Red"),
("Blue", "Blue"),
)
tone= models.CharField(max_length = 32, choices = COLORS_CHOICHES)
class RedColor(ColorBase):
COLORS_CHOICHES = (
("Light red",
"light red"),
("Dark red", "dark red")
)
....
class WhiteColor(ColorBase):
COLORS_CHOICHES = (
("Light white",
"light
white"),
("Dark white", "dark white")
)
....
Now in your $ wine/admin.py:
class ColorBaseAdmin(admin.ModelAdmin):
model = ColorBase
def formfield_for_dbfield(self, db_field, **kwargs):
if db_field.name == 'status':
kwargs.update(
{'choices':self.model. COLORS_CHOICHES}
)
#I THINK THIS IS NOT REQUIRED BECAUSE AUTOMATICALLY YOU HAVE
MODEL UPDATED.. you can omit these two lines
if settings.DEBUG self.model == ColorBase:
logger.warning("Please set the model in your model admin to
display correct status' choices")
return super(ColorBaseAdmin, self).formfield_for_dbfield(
db_field, **kwargs)
class RedColorAdmin(ColorBaseAdmin):
model=RedColor
class WhiteColorAdmin(ColorBaseAdmin):
model=WhiteColor
admin.site.register(RedColor, RedColorAdmin)
admin.site.register(WhiteColor, WhiteColorAdmin)
If you need choices in your frontend form you have to pass
YourColor.COLOR_CHOICES choices to your form field in your form's __init__
function
#HOPE THIS WORKS BUT I DIDN'T TEST IT
class BaseColorForm(forms.ModelForm):
def __init__(self, **kwargs):
self.base_fields['tone'].choices=self.Meta.model.COLOR_CHOICES
super(BaseColorForm, self).__init__(*args, **kwargs)
class RedColorForm(BaseColorForm):
class Meta:
model = RedColor
class WhiteColorForm(BaseColorForm):
class Meta:
model = WhiteColor
Hope this helps
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