Group ManyToMany in Django admin -

i have model "company" having many many relationships country , city while country , city have 1 many relationship between them. problem when loading "enterprise" have select countries atienede company , cities serve, list of cities long , cities mixed without distinguishing country are. i'd group cities country.

it django-smart-selects, plugin not work in many many relationships. me adapt plugin work many many relationship or comment me if think of alternative.

thank much!

class company(models.model):     name = models.charfield(max_length=255)     countries = models.manytomanyfield(country)     cities = models.manytomanyfield(city)  class country(models.model):     name = models.charfield(max_length=255)  class city(models.model):     name = models.charfield(max_length=255)     country = models.foreignkey(country) 

here solution how can solve in admin smart_selects:

define through model manytomany relationship (company city). in through model define relationship city groupedforeignkey. make inline in admin conpany through model.

class country(models.model):     name=models.charfield(max_length=50)  class city(models.model):     name=models.charfield(max_length=50)     country=models.foreignkey(country)  class ccrel(models.model):     city= groupedforeignkey(city, "country")     company = models.foreignkey("company")  class company(models.model):     name=models.charfield(max_length=50)     country = models.manytomanyfield(country,through="ccrel") 

and admin.py:

class cinline(admin.tabularinline):     model = ccrel class cadmin(admin.modeladmin):     inlines=[cinline] admin.site.register(company,cadmin) 

it should work chainedforeignkey in similar manner.

you should remove country field company model redundant.